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Containing spores Black & White Stock Photos
RMRDKDXG–. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. 56 DUDLEY MEMORIAL VOLUME The seta at this stage has about the same length as the capsule, and in longitudinal section (Fig. 12, H) shows the cells to be arranged in pretty regular rows. Probably the great elongation of the seta at the time the spores are shed is due to simple elongation of the cells without any cell divi- sions, as has been shown to be the case in other liverworts. The large heart- shap
![. Diseases of bees. Bees. Fig. 1.—Spores of Bacillus larvae. (McCray (SI)) Fig. 2.—Vegetative rod form of Bacillus larvae. (White (SS)) were accurately described and differentiated by Phillips (37), definite new names being used for the first time in order to eliminate confusion, as follows: Ameri- can foulbrood, formerly known as "foulbrood" ("Usually the larvae are attacked at about the time of capping, and most of the cells containing infected larvae are capped"); and European foulbrood, originally called "black brood" ("This disease attacks the larvae ear Stock Photo](https://c8.alamy.com/comp/RDE1HA/diseases-of-bees-bees-fig-1spores-of-bacillus-larvae-mccray-si-fig-2vegetative-rod-form-of-bacillus-larvae-white-ss-were-accurately-described-and-differentiated-by-phillips-37-definite-new-names-being-used-for-the-first-time-in-order-to-eliminate-confusion-as-follows-ameri-can-foulbrood-formerly-known-as-quotfoulbroodquot-quotusually-the-larvae-are-attacked-at-about-the-time-of-capping-and-most-of-the-cells-containing-infected-larvae-are-cappedquot-and-european-foulbrood-originally-called-quotblack-broodquot-quotthis-disease-attacks-the-larvae-ear-RDE1HA.jpg ". Diseases of bees. Bees. Fig. 1.—Spores of Bacillus larvae. (McCray (SI)) Fig. 2.—Vegetative rod form of Bacillus larvae. (White (SS)) were accurately described and differentiated by Phillips (37), definite new names being used for the first time in order to eliminate confusion, as follows: Ameri- can foulbrood, formerly known as "foulbrood" ("Usually the larvae are attacked at about the time of capping, and most of the cells containing infected larvae are capped"); and European foulbrood, originally called "black brood" ("This disease attacks the larvae ear Stock Photo")
RMRDE1HA–. Diseases of bees. Bees. Fig. 1.—Spores of Bacillus larvae. (McCray (SI)) Fig. 2.—Vegetative rod form of Bacillus larvae. (White (SS)) were accurately described and differentiated by Phillips (37), definite new names being used for the first time in order to eliminate confusion, as follows: Ameri- can foulbrood, formerly known as "foulbrood" ("Usually the larvae are attacked at about the time of capping, and most of the cells containing infected larvae are capped"); and European foulbrood, originally called "black brood" ("This disease attacks the larvae ear
RMRDWCKC–. Botany, with agricultural applications. Botany. FEMALE GAMETOPHYTE 449 sporangium as in Selaginella, but a new feature of the Cycads is that the megasporangium does not open to allow the megaspore to be exposed, and therefore the female gametophyte remains permanently enclosed in the sporangium. The developing female gametophyte uses most of the nucellus for food and thereby makes room for itself. When the gametophyte is mature the. Fig. 399. â Section through a Cycad ovule containing a mature gameto- phyte. /, female gametophyte with two archegonia (a) shown; m, micro- spores developing tub
RMRE45B5–. A text-book upon the pathogenic Bacteria and Protozoa for students of medicine and physicians. Bacteriology; Pathogenic bacteria; Protozoa. Morphology 733 widely in nature seems to be indicated by the fact that cases of infection have been known to occur from the spines of barley and other cereals. Berestnew* succeeded in isolating the organisms from hay and straw. Morphology.—A complete ray-fungus consists of several distinct zones composed of different elements. The center is composed of a granular mass containing numerous bodies resembling micro- cocci or spores. Extending from this cente
RMRDE1F7–. Diseases of bees. Bees. Apr. 12,1924 Development of American Foulbrood 139 added to each tube and it is then slanted. Series of agar slants varying in sugar concentration are inoculated with either vegetative cultures or diseased material containing only spores. To determine spore germination an approximately uniform amount, about one 2-mm. loopful of ropy material, when available, is used for inoculation of slants, otherwise a scale softened as described above. If no visible growth takes place after 48 hours' incubation, stained smears are made, to determine whether any germination has occu
RMRDDYJ3–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. ROOT CROPS. 4B ramifies chiefly in the upper part of the bulb, causing decay. Among this mycelium are numbers of black grains —the sclerotia, or masses of mycelia in a resting state. Each sclerotium germinates by throwing out hyphse which ultimately give rise (at their ends) to sporangia containing oval sporidia (spores). The sporangia, when ripe, burst in the air, and the spores are wafted about by air currents, causing destruction to crops of onions. The spores ger-. Fig. 18.
RMRDB721–. Gray's new manual of botany. A handbook of the flowering plants and ferns of the central and northeastern United States and adjacent Canada. Botany. 48 OPHIOGLOSSACEAE (ADDEu's TONGUE FAMILY) distinct, rather coriaceous, not reticulated, globular, without a ring, and open- ing transversely into two valves. Sterile segment of the frond ternately or pinnately divided or compound ; veins all free. Spores copious, sulphur-color. (Name a diminutive of fiSrpvs, a cluster of grapes, from the appearance of the fructification.) § 1. EUBOTRYCHIUM Milde. Base of the stalk (^containing the bud) complete
![. A natural history of new and rare ferns : containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic", amongst which are the new hymenophyllums and Trichomanes . Ferns. Pinna of fertile Frond, under side. ASPIDIUM CARYOTIDEUM. Wallich. }'LATB XLIII. Cyrtomium caryotideum, Mooeb. Aspidium—Shield Fern. Caryotideum— ? In the Section Cyrtomium op Authors. A handsome rare Fern, said to be as large as Cyrtomium falcatum. An evergreen stove species. Native of the East Indies. Raised from spores by Mr. Nilson Saunders, of Reigate, Stock Photo](https://c8.alamy.com/comp/RDDB2G/a-natural-history-of-new-and-rare-ferns-containing-species-and-varieties-none-of-which-are-included-in-any-of-the-eight-volumes-of-quotferns-british-and-exoticquot-amongst-which-are-the-new-hymenophyllums-and-trichomanes-ferns-pinna-of-fertile-frond-under-side-aspidium-caryotideum-wallich-latb-xliii-cyrtomium-caryotideum-mooeb-aspidiumshield-fern-caryotideum-in-the-section-cyrtomium-op-authors-a-handsome-rare-fern-said-to-be-as-large-as-cyrtomium-falcatum-an-evergreen-stove-species-native-of-the-east-indies-raised-from-spores-by-mr-nilson-saunders-of-reigate-RDDB2G.jpg ". A natural history of new and rare ferns : containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic", amongst which are the new hymenophyllums and Trichomanes . Ferns. Pinna of fertile Frond, under side. ASPIDIUM CARYOTIDEUM. Wallich. }'LATB XLIII. Cyrtomium caryotideum, Mooeb. Aspidium—Shield Fern. Caryotideum— ? In the Section Cyrtomium op Authors. A handsome rare Fern, said to be as large as Cyrtomium falcatum. An evergreen stove species. Native of the East Indies. Raised from spores by Mr. Nilson Saunders, of Reigate, Stock Photo")
RMRDDB2G–. A natural history of new and rare ferns : containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic", amongst which are the new hymenophyllums and Trichomanes . Ferns. Pinna of fertile Frond, under side. ASPIDIUM CARYOTIDEUM. Wallich. }'LATB XLIII. Cyrtomium caryotideum, Mooeb. Aspidium—Shield Fern. Caryotideum— ? In the Section Cyrtomium op Authors. A handsome rare Fern, said to be as large as Cyrtomium falcatum. An evergreen stove species. Native of the East Indies. Raised from spores by Mr. Nilson Saunders, of Reigate,
RMRD9KC0–. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. SAECOSPORIDIA 175 several inches in length. Microscopic examination shows that these patches are cysts containing thousands of tiny spores, segregated into chambers (Fig. 52A) which correspond to the pansporoblasts of Rhinosporidium. The spores (Fig. 52C), es- caping from the cyst, ultimately develop into new cysts in much. D Fig. 52. Sarcosporidia. A, Sarcocyslis hlanchardi of ox, longitudinal section of infected muscle fiber (m. f.) showing spores (sp.) in chambers of compartments (comp.); 11., nucleu
RMRDWC4G–. The essentials of botany. Botany. ASCOSPOREAE 213 C. Spore fruits much reduced, containing teliospores. Class Teliospobeae. D. Asci, basidia or teliospores unknown (artificial group). Fungi Impeefecti. Class 14. ASCOSPOREAE. The Ascus Fungi. 333. This large class includes chlorophyll-less plants which differ much in size and appearance, but which agree in producing their fruit-spores (carpo- spores) in sacs (asci), and because they are in sacs they are called sac-spores or ascospores. These spore-bearing sacs (singular, ascus; plural, asci) are end- cells in the sporogenous tissue of the fru
RMRE3MHD–. A handbook of cryptogamic botany. Cryptogams. MVSCI 147 â which for a time fills the spore-sac, composed of two or three layers of barren cells immediately enclosing the mass of spores. Between the spore-sac and the wall of the mature sporange is an annular air-cavity, tra- versed horizontally by rows of chloro- phyllous cells, the trabecules. The opercule is simply a piece of the epi- derm of the sporange. In most genera a portion of the wall of the sporange, situated near the base of the columel, consists of an assimilating system composed of spongy or palisade- parenchyme, containing chlo
RMRDCY51–. Botany for agricultural students . Botany. FEMALE GAMETOPHYTE 449 sporangium as in Selaginella, but a new feature of tiie Cycads is that the megasporangium does not open to allow the megaspore to be exposed, and therefore the female gametophyte remains permanently enclosed in the sporangium. The developing female gametophyte uses most of the nucellus for food and thereby makes room for itself. When the gametophyte is mature the. Fig. 399. — Section through a Cycad ovule containing a mature gameto- phyte. /, female gametophyte with two archegonia (a) shown; m, micro- spores developing tubes,
RMRDC27C–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. UNCINULA. 177 appendages having hooked tips. Within the peritheeia are found the ovoid asci containing the spores; there are from four to ten asci in each perithecium, and four to eight spores in each ascus. The conidial stage was formerly known as Oidium Tiickeri. The conidia are abjointed as oval colourless bodies from simple septate conidiophores, to the number of two or three in each chain. They germinate at onc
![. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Obder 158.âLTCOPODIACEiE. 811 killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above ; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.âMinute, floating, resembling Stock Photo](https://c8.alamy.com/comp/REP4TF/class-book-of-botany-microform-being-outlines-of-the-structure-physiology-and-classification-of-plants-with-a-flora-of-the-united-states-and-canada-botany-botany-plants-plants-botanique-botanique-plantes-botanique-obder-158ltcopodiaceie-811-killed-by-drought-fruit-sessile-on-the-under-side-of-the-branches-of-2-kinds-the-sterile-smaller-opening-all-around-containing-a-thick-body-bearing-3-angular-lobes-antheridia-above-the-fertile-a-thin-pericarp-bursting-irregularly-containing-many-globular-stalked-sporangia-each-with-a-few-sporesminute-floating-resembling-REP4TF.jpg ". Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Obder 158.âLTCOPODIACEiE. 811 killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above ; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.âMinute, floating, resembling Stock Photo")
RMREP4TF–. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Obder 158.âLTCOPODIACEiE. 811 killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above ; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.âMinute, floating, resembling
RMRDWG62–. Elementary botany. Botany. FUNGI: SAC FUNGI. 137 301. Asci and ascospores.—While we are looking at a few of these through the microscope with the low power, we should. Fig. 164. Leaves of willow showing willow mildew. The black dots are the fruit bodies (perithecia) seated on the white mycelium. press on the cover glass with a needle until we see a few of the perithecia rupture. If this is done carefully we will see several small ovate sacs issue, each containing a number of spores, as shown in fig. 166. Such a sac is an ascus, and the spores are ascospores,. Please note that these images ar
RMRE0P5P–. Elementary botany. Botany. a-T. Fig- 174- Nearly mature sporogonium of Riccia crystallina; mature spore at the right. Fig. 175. Riccia glauca; archegonium containing nearly mature spo- rogonium. sg, spore-producmg cells surrounded by single layer 'all o£ the sporogonium. of sterile cells, the wall fours are the spores. At this time the wall of the spore-case dis- solves, the spores separate from each other and fill the now en- larged venter of the archegonium. When the thallus dies they are liberated, or escape between the loosely arranged cells of the upper surface. 314. A new phase in plan
![. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. S20 PRACTICAL COURSE IN BOTANY microscope and notice that the yellow substance is com- posed of regular layers of colored spores. The corolla-like receptacles containing them, popularly known as " clus- ter cups," are borne on a mycelium produced from the spores described in the last paragraph. This mycelium is parasitic on barberry or other leaves, according to the kind of fungus, and was long believed to be a distinct plant, to 3 ^ which the name Mcid- ium (pi. Stock Photo](https://c8.alamy.com/comp/RE2J56/a-practical-course-in-botany-with-especial-reference-to-its-bearings-on-agriculture-economics-and-sanitation-botany-s20-practical-course-in-botany-microscope-and-notice-that-the-yellow-substance-is-com-posed-of-regular-layers-of-colored-spores-the-corolla-like-receptacles-containing-them-popularly-known-as-quot-clus-ter-cupsquot-are-borne-on-a-mycelium-produced-from-the-spores-described-in-the-last-paragraph-this-mycelium-is-parasitic-on-barberry-or-other-leaves-according-to-the-kind-of-fungus-and-was-long-believed-to-be-a-distinct-plant-to-3-which-the-name-mcid-ium-pi-RE2J56.jpg ". A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. S20 PRACTICAL COURSE IN BOTANY microscope and notice that the yellow substance is com- posed of regular layers of colored spores. The corolla-like receptacles containing them, popularly known as " clus- ter cups," are borne on a mycelium produced from the spores described in the last paragraph. This mycelium is parasitic on barberry or other leaves, according to the kind of fungus, and was long believed to be a distinct plant, to 3 ^ which the name Mcid- ium (pi. Stock Photo")
RMRE2J56–. A practical course in botany, with especial reference to its bearings on agriculture, economics, and sanitation. Botany. S20 PRACTICAL COURSE IN BOTANY microscope and notice that the yellow substance is com- posed of regular layers of colored spores. The corolla-like receptacles containing them, popularly known as " clus- ter cups," are borne on a mycelium produced from the spores described in the last paragraph. This mycelium is parasitic on barberry or other leaves, according to the kind of fungus, and was long believed to be a distinct plant, to 3 ^ which the name Mcid- ium (pi.
![. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 58 DISEASES OF CROPS. ing a kind of " head " with one or more lacunae (apertures). The mature spores rupture the '' skin " of plant potato and are therefore liberated. Prevention and Cure.—(1) The seed potatoes should be free from this disease. (2) Steep the seed potatoes in a solution containing from 1 to 5 per cent, of iron sulphate. This will destroy any spores of the potato smut that may be upon them. Fusisporium solani {Periola tomentosa, Fig. 24) is another Stock Photo](https://c8.alamy.com/comp/RDDYHD/the-diseases-of-crops-and-their-remedies-a-handbook-of-economic-biology-for-farmers-and-students-plant-diseases-58-diseases-of-crops-ing-a-kind-of-quot-head-quot-with-one-or-more-lacunae-apertures-the-mature-spores-rupture-the-skin-quot-of-plant-potato-and-are-therefore-liberated-prevention-and-cure1-the-seed-potatoes-should-be-free-from-this-disease-2-steep-the-seed-potatoes-in-a-solution-containing-from-1-to-5-per-cent-of-iron-sulphate-this-will-destroy-any-spores-of-the-potato-smut-that-may-be-upon-them-fusisporium-solani-periola-tomentosa-fig-24-is-another-RDDYHD.jpg ". The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 58 DISEASES OF CROPS. ing a kind of " head " with one or more lacunae (apertures). The mature spores rupture the '' skin " of plant potato and are therefore liberated. Prevention and Cure.—(1) The seed potatoes should be free from this disease. (2) Steep the seed potatoes in a solution containing from 1 to 5 per cent, of iron sulphate. This will destroy any spores of the potato smut that may be upon them. Fusisporium solani {Periola tomentosa, Fig. 24) is another Stock Photo")
RMRDDYHD–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 58 DISEASES OF CROPS. ing a kind of " head " with one or more lacunae (apertures). The mature spores rupture the '' skin " of plant potato and are therefore liberated. Prevention and Cure.—(1) The seed potatoes should be free from this disease. (2) Steep the seed potatoes in a solution containing from 1 to 5 per cent, of iron sulphate. This will destroy any spores of the potato smut that may be upon them. Fusisporium solani {Periola tomentosa, Fig. 24) is another
![. The commonly occurring wild plants of Canada and more especially of the province of Ontario [microform] : a flora for the use of beginners. Botany; Wild flowers; Plants; Botanique; Fleurs sauvages; Plantes. xxvi KBt TO USB ORDEBai SERIES n. CRYPTOGAMS. Plants without stamens and pistils, reproducing themselves by spores instead of seeds. CLASS in. ACROGEKS. Stems containing vascular as well as cellular tissue. FiLicES.—Spores produced on the fronds. .. • .^ 154 Equisetace^.—Spores produced on the under side of the shield-shaped scales of a terminal spike or cone. .. 16C Ltoofodiace^.—Spore-c Stock Photo](https://c8.alamy.com/comp/RJ30CY/the-commonly-occurring-wild-plants-of-canada-and-more-especially-of-the-province-of-ontario-microform-a-flora-for-the-use-of-beginners-botany-wild-flowers-plants-botanique-fleurs-sauvages-plantes-xxvi-kbt-to-usb-ordebai-series-n-cryptogams-plants-without-stamens-and-pistils-reproducing-themselves-by-spores-instead-of-seeds-class-in-acrogeks-stems-containing-vascular-as-well-as-cellular-tissue-filicesspores-produced-on-the-fronds-154-equisetacespores-produced-on-the-under-side-of-the-shield-shaped-scales-of-a-terminal-spike-or-cone-16c-ltoofodiacespore-c-RJ30CY.jpg ". The commonly occurring wild plants of Canada and more especially of the province of Ontario [microform] : a flora for the use of beginners. Botany; Wild flowers; Plants; Botanique; Fleurs sauvages; Plantes. xxvi KBt TO USB ORDEBai SERIES n. CRYPTOGAMS. Plants without stamens and pistils, reproducing themselves by spores instead of seeds. CLASS in. ACROGEKS. Stems containing vascular as well as cellular tissue. FiLicES.—Spores produced on the fronds. .. • .^ 154 Equisetace^.—Spores produced on the under side of the shield-shaped scales of a terminal spike or cone. .. 16C Ltoofodiace^.—Spore-c Stock Photo")
RMRJ30CY–. The commonly occurring wild plants of Canada and more especially of the province of Ontario [microform] : a flora for the use of beginners. Botany; Wild flowers; Plants; Botanique; Fleurs sauvages; Plantes. xxvi KBt TO USB ORDEBai SERIES n. CRYPTOGAMS. Plants without stamens and pistils, reproducing themselves by spores instead of seeds. CLASS in. ACROGEKS. Stems containing vascular as well as cellular tissue. FiLicES.—Spores produced on the fronds. .. • .^ 154 Equisetace^.—Spores produced on the under side of the shield-shaped scales of a terminal spike or cone. .. 16C Ltoofodiace^.—Spore-c
RMRE2FME–. Fundamentals of botany. Botany. 270 STRUCTURE AND LIFE HISTORIES (Fig. 185). The cells from this point on, to the forma- tion of the ascus, are diploid, and therefore constitute the sporophytic generation. anth;-. Fig. 195.—^Lilac mildew {Microsphcera Alni). A, perithecium, with appendages; B, perithecium, showing asci (a); C, an ascus, containing ascospores; D, conidiophore {cph), bearing a chain of conidia (conidio- spores, c.s); E, beginning of fertilization; anih, autheridium; car, carpo- gonium; F, later stage in fertilization; the contents of the antheridium and carpogonium have fused;
![. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 58 DISEASES OF CROPS. ing a kind of " head " with one or more lacunse (apertures). The mature spores rupture the " skin " of plant potato and are therefore liberated. Prevention and Cure.—(1) The seed potatoes should be free from this disease. (2) Steep the seed potatoes in a solution containing from 1 to 5 per cent, of iron sulphate. This will destroy any spores of the potato smut that may be upon them. Fusisporium solani {Periola tomentosa, Fig. 24) is ano Stock Photo](https://c8.alamy.com/comp/RDGX65/the-diseases-of-crops-and-their-remedies-a-handbook-of-economic-biology-for-farmers-and-students-plant-diseases-58-diseases-of-crops-ing-a-kind-of-quot-head-quot-with-one-or-more-lacunse-apertures-the-mature-spores-rupture-the-quot-skin-quot-of-plant-potato-and-are-therefore-liberated-prevention-and-cure1-the-seed-potatoes-should-be-free-from-this-disease-2-steep-the-seed-potatoes-in-a-solution-containing-from-1-to-5-per-cent-of-iron-sulphate-this-will-destroy-any-spores-of-the-potato-smut-that-may-be-upon-them-fusisporium-solani-periola-tomentosa-fig-24-is-ano-RDGX65.jpg ". The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 58 DISEASES OF CROPS. ing a kind of " head " with one or more lacunse (apertures). The mature spores rupture the " skin " of plant potato and are therefore liberated. Prevention and Cure.—(1) The seed potatoes should be free from this disease. (2) Steep the seed potatoes in a solution containing from 1 to 5 per cent, of iron sulphate. This will destroy any spores of the potato smut that may be upon them. Fusisporium solani {Periola tomentosa, Fig. 24) is ano Stock Photo")
RMRDGX65–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 58 DISEASES OF CROPS. ing a kind of " head " with one or more lacunse (apertures). The mature spores rupture the " skin " of plant potato and are therefore liberated. Prevention and Cure.—(1) The seed potatoes should be free from this disease. (2) Steep the seed potatoes in a solution containing from 1 to 5 per cent, of iron sulphate. This will destroy any spores of the potato smut that may be upon them. Fusisporium solani {Periola tomentosa, Fig. 24) is ano
RMRDC1W6–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fio. 104. —Sphaerella laricina. Section through a diseased larch needle in June after it has lain on the ground from the previous year. The mycelium is thick, thick-walled, and of a light-brown colour. The perithecia contain asci and asco- spores. To the extreme right is a pycnidium containing little oblong conidia, alongside a perithecium. x ^-^. (After R. Hartig.) for distribution by means of conidia. As, however,
RMRDRD52–. Introduction to botany. Botany. Flowers. 203. does not differ from a foliage leaf in appearance. One kind of sporangium contains relatively small spores termed microspores (Fig. 121) which on germination give rise to a rudimentary plant body called prothallmm, bearing sperm cells; and the other sort of sporangium contains relatively large spores, the macro- spores (Fig. 121), which on germination produce a prothalUum bearing egg cells. The sporangium containing macrospores is termed niacrosporan- gimn, and the sporophyll subtending it macrosporo- phyll, while the corre- sponding parts relati
RMRE3CWN–. A handbook of cryptogamic botany. Cryptogams. 314 FUNGI of simple germination by the emission of a germ^tube is manifest. The example of Phytophthora infestans (de By.) illustrates this. The acro- genously-formed zoosporange pro- duces zoospores in pure water containing free oxygen in fair amount. In nutrient solutions, on the other hand, no zoospores are formed, and the potential zoospo- range simply emits germ-tubes. Germination of spores, however, takes place characteristically in fungi by the emission of germ- tubes under conditions of tempe- rature, moisture, and the like presently to b
RMRDD861–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. USTILAGO. 279 Ustilago maydis (D.C.)^ (Britain and U.S. America).^ This smut of Zea Mais produces large and conspicuous deformations on leaves, leaf-sheaths, stems, roots, and all parts of the male and female flowers. These are whitish, gall-like swellings and blisters, containing a mass of gelatinous mycelium, from which spores are produced. The swellings may- attain to the size of a fist, or even larger. The spore
RMRDF3EX–. Class-book of botany : being outlines of the structure, physiology, and classification of plants ; with a flora of the United States and Canada . Botany; Botany; Botany. Okdee 158.âLTCOPODIACB^. 811 killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above ; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.âMinute, floating, resembling a Jungermaunia. with filiform stems and lobed fronds. A. Caro
RMRDWG4M–. Elementary botany. Botany. Fig. 174. Nearly mature sporogonium of Riccia crystallina; mature spore at the right. Fig- '75- Riccia glauca; archegonium containing nearly mature spo- rogonium. sg; spore-producing cells surrounded by single layer of sterile cells, the wall of the sporogonium. fours are the spores. At this time the wall of the spore-case dis- solves, the spores separate from each other and fill the now en- larged venter of the archegonium. When the thallus dies they are liberated, or escape between the loosely arranged cells of the upper surface. 314. A new phase in plant life.—T
RMRDJ8TC–. Plant life and plant uses; an elementary textbook, a foundation for the study of agriculture, domestic science or college botany. Botany. Fig. 221. — Sections through spores of Selaginella as seen through a microscope. This shows their actual difference in size.. Fig. 222. — Selaginella. Sketches show- ing stages in the germination of the microspore and the development from it of the male gametophyte. A, ma- ture microspore. B, the microspore containing two cells; it has new ceased to be a spore; the male gametophyte has begun. C and D, later stages in the development of the male gametophyte
![. Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. ANIMAL-PLANTS AND SEA-WEEDS 123 So the branches of a true sea-weed are alto- L^'ether unlike those of the zoophyt' s, though in. 79. A tiny sea-weed scattering its spores, or seeds, into the water Structural details they may differ between them- selves even more than do the zoophytes. In Fig". 79 a nearly related form is given, but in this instance bearing fruit. A kind of capsule or berry containing the spores or seeds is developed amongst Stock Photo](https://c8.alamy.com/comp/RDP0TM/minute-marvels-of-nature-being-some-revelations-of-the-microscope-exhibited-by-photomicrographs-taken-by-the-author-natural-history-microscopes-animal-plants-and-sea-weeds-123-so-the-branches-of-a-true-sea-weed-are-alto-lether-unlike-those-of-the-zoophyt-s-though-in-79-a-tiny-sea-weed-scattering-its-spores-or-seeds-into-the-water-structural-details-they-may-differ-between-them-selves-even-more-than-do-the-zoophytes-in-figquot-79-a-nearly-related-form-is-given-but-in-this-instance-bearing-fruit-a-kind-of-capsule-or-berry-containing-the-spores-or-seeds-is-developed-amongst-RDP0TM.jpg ". Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. ANIMAL-PLANTS AND SEA-WEEDS 123 So the branches of a true sea-weed are alto- L^'ether unlike those of the zoophyt' s, though in. 79. A tiny sea-weed scattering its spores, or seeds, into the water Structural details they may differ between them- selves even more than do the zoophytes. In Fig". 79 a nearly related form is given, but in this instance bearing fruit. A kind of capsule or berry containing the spores or seeds is developed amongst Stock Photo")
RMRDP0TM–. Minute marvels of nature, being some revelations of the microscope, exhibited by photomicrographs taken by the author. Natural history; Microscopes. ANIMAL-PLANTS AND SEA-WEEDS 123 So the branches of a true sea-weed are alto- L^'ether unlike those of the zoophyt' s, though in. 79. A tiny sea-weed scattering its spores, or seeds, into the water Structural details they may differ between them- selves even more than do the zoophytes. In Fig". 79 a nearly related form is given, but in this instance bearing fruit. A kind of capsule or berry containing the spores or seeds is developed amongst
RMRDJ1YB–. Mosses with a hand-lens; a non-technical handbook of the more common and more easily recognized mosses of the north-eastern United States. Mosses. MOSSES WITH A HAND-LENS 197 Sessile, without any stalk, like the leaves of all the mosses or the capsules of Webera. Segments. See under peristome. Seta, the stalk on which the capsule is borne. (Figs. 6 and lo.) Sigmoid, curved like the letter S. Spermatozoid. See antherozoid. Sporangium, often applied to the capsule, but by some authors restricted to the spore sac, or inner sac of the capsule containing the spores. Spores, small round bodies con
RMRE2MX0–. Elementary botany. Botany. Fig. 255- Nearly mature sporogonium of Riccia crystallina; mature spore at the right. Fig. 236. Riccia glauca; archegonium containing neariv mature spo- rogonium. j,v, spore-producing cells surrounded bv single layer of sterile cells, the wall of the sporogonium. fours are the spores. At this time the wall of the spore-case dis- solves, the spores separate from each other and fill the now en- larged venter of the archegonium. When the thallus dies they are liberated, or escape between the loosely arranged cells of the upper surface. 481. A new phase in plant life.—
RMRE1NDC–. A text-book of elementary botany. Botany. 96 ELEMENTARY BOTANY. smaller flask-shaped bodies, called spermogonia (Fig. 121), containing hair-like filaments, which break up into exceed- ingly small bodies, called the spermatia. The exact function Spermogonia „ Spermogoma ^Ecidium. Jlcidmm Fig. 121. of these is not known. The Escidiospores germinate, and when on the proper host-plants the germ-tube grows through the stomates. A dense mycelium is then formed in the paren- chyma of the leaf; from this mycelium grow pedicelled spores, called uredospores. They form, when they burst through the epid
RMRDDA88–. The American fruit culturist, containing directions for the propagation and culture of all fruits adapted to the United States. Fruit-culture. DESTRUCTIVE INSECTS. 209 and also the spores of some serious fungous diseases. On small areas it is practicable to crush by hand the insects in the rolled leaves. The Strawberry Weevil {Anthonomus signatus) is a little snout-beetle, measuring only a tenth of an inch in length (Fig. 277), which deposits an egg in a strawberry bud and then punctures or cuts the stem below it (Fig. 278) in such a way that in a few days the bud drops to the ground. Within
RMRDYFY0–. A textbook of botany for colleges and universities ... Botany. would seem to be a ves- After TuLASNE. tigial one. The other structure produced by the my- celium in the barberry leaf is the aecidium or clusterciip. The aecidia usually appear in groups on the lower leaf surface, each opening upon the surface as a cup containing numer- ous simple sporophores bearing rows of spores, „,, , , the aecidiospores (fig. 196). The scattered Fig. 195. — Wheal rust: a r o y / spermogonium (producing aecidiospores that fall upon young wheat spermatia) arising from the plants germinate, the host is penet
![. A natural history of new and rare ferns : containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic", amongst which are the new hymenophyllums and Trichomanes . Ferns. Pinna of barren Frond. PTERIS AREOLATA. Lowe. PLATE LVII. Litohrochia areolata, MooEE. Pteris—Brake. Areolata—Name in reference to the areoles. In the Section Litobrochia op Authors. A NEW and rare species, introduced by Mr. R. Sim, of Foot's Cray, having been raised from East Indian spores in 1858. It is considered by Mr. Moore to be an undescribed species Stock Photo](https://c8.alamy.com/comp/RDDAN4/a-natural-history-of-new-and-rare-ferns-containing-species-and-varieties-none-of-which-are-included-in-any-of-the-eight-volumes-of-quotferns-british-and-exoticquot-amongst-which-are-the-new-hymenophyllums-and-trichomanes-ferns-pinna-of-barren-frond-pteris-areolata-lowe-plate-lvii-litohrochia-areolata-mooee-pterisbrake-areolataname-in-reference-to-the-areoles-in-the-section-litobrochia-op-authors-a-new-and-rare-species-introduced-by-mr-r-sim-of-foots-cray-having-been-raised-from-east-indian-spores-in-1858-it-is-considered-by-mr-moore-to-be-an-undescribed-species-RDDAN4.jpg ". A natural history of new and rare ferns : containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic", amongst which are the new hymenophyllums and Trichomanes . Ferns. Pinna of barren Frond. PTERIS AREOLATA. Lowe. PLATE LVII. Litohrochia areolata, MooEE. Pteris—Brake. Areolata—Name in reference to the areoles. In the Section Litobrochia op Authors. A NEW and rare species, introduced by Mr. R. Sim, of Foot's Cray, having been raised from East Indian spores in 1858. It is considered by Mr. Moore to be an undescribed species Stock Photo")
RMRDDAN4–. A natural history of new and rare ferns : containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic", amongst which are the new hymenophyllums and Trichomanes . Ferns. Pinna of barren Frond. PTERIS AREOLATA. Lowe. PLATE LVII. Litohrochia areolata, MooEE. Pteris—Brake. Areolata—Name in reference to the areoles. In the Section Litobrochia op Authors. A NEW and rare species, introduced by Mr. R. Sim, of Foot's Cray, having been raised from East Indian spores in 1858. It is considered by Mr. Moore to be an undescribed species
![. A natural history of new and rare ferns: containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic," amongst which are the new Hymenophyllums and Trichomanes. With col. illus. and wood-cuts. Ferns. Pinna of barren Frond. PTERIS AREOLATA. Lowe. I'LATJ-: LVII. LHobrocJiia areolata. MooEB. Pleris—Brake. Areolata—Name in reference to tlie areoles. In the Section Litobkochia of Authors. A NEW and rare species, introduced by Mr. E.. Sim, of Foot's Cray, having been raised from East Indian spores in 1858. It is considered by Mr. Stock Photo](https://c8.alamy.com/comp/RDWCWY/a-natural-history-of-new-and-rare-ferns-containing-species-and-varieties-none-of-which-are-included-in-any-of-the-eight-volumes-of-quotferns-british-and-exoticquot-amongst-which-are-the-new-hymenophyllums-and-trichomanes-with-col-illus-and-wood-cuts-ferns-pinna-of-barren-frond-pteris-areolata-lowe-ilatj-lvii-lhobrocjiia-areolata-mooeb-plerisbrake-areolataname-in-reference-to-tlie-areoles-in-the-section-litobkochia-of-authors-a-new-and-rare-species-introduced-by-mr-e-sim-of-foots-cray-having-been-raised-from-east-indian-spores-in-1858-it-is-considered-by-mr-RDWCWY.jpg ". A natural history of new and rare ferns: containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic," amongst which are the new Hymenophyllums and Trichomanes. With col. illus. and wood-cuts. Ferns. Pinna of barren Frond. PTERIS AREOLATA. Lowe. I'LATJ-: LVII. LHobrocJiia areolata. MooEB. Pleris—Brake. Areolata—Name in reference to tlie areoles. In the Section Litobkochia of Authors. A NEW and rare species, introduced by Mr. E.. Sim, of Foot's Cray, having been raised from East Indian spores in 1858. It is considered by Mr. Stock Photo")
RMRDWCWY–. A natural history of new and rare ferns: containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic," amongst which are the new Hymenophyllums and Trichomanes. With col. illus. and wood-cuts. Ferns. Pinna of barren Frond. PTERIS AREOLATA. Lowe. I'LATJ-: LVII. LHobrocJiia areolata. MooEB. Pleris—Brake. Areolata—Name in reference to tlie areoles. In the Section Litobkochia of Authors. A NEW and rare species, introduced by Mr. E.. Sim, of Foot's Cray, having been raised from East Indian spores in 1858. It is considered by Mr.
RMRE3Y4X–. Pathogenic micro-organisms. A text-book of microbiology for physicians and students of medicine. (Based upon Williams' Bacteriology). Bacteriology; Pathogenic bacteria. SPOROZOA 429. Fig. 188.âEl- mer i a steidae. 06cyst containing four spores, forms about the fertilized cell and within this the cell divides into two and later into four embryo parasites, which are enclosed in pairs in two spores within the cyst. This escapes with the feces of the mole and serves to infect a new host. The invasion of the epithelium produces a severe diarrhea in the mole often resulting in death. If the animal
![. Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Order 158.—LYC0P0DIACEJ5. 8U killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.—Minute, floating, resembling Stock Photo](https://c8.alamy.com/comp/RJ1WP9/class-book-of-botany-microform-being-outlines-of-the-structures-physiology-and-classification-of-plants-with-a-flora-of-the-united-states-and-canada-botany-botany-plants-plants-botanique-botanique-plantes-botanique-order-158lyc0p0diacej5-8u-killed-by-drought-fruit-sessile-on-the-under-side-of-the-branches-of-2-kinds-the-sterile-smaller-opening-all-around-containing-a-thick-body-bearing-3-angular-lobes-antheridia-above-the-fertile-a-thin-pericarp-bursting-irregularly-containing-many-globular-stalked-sporangia-each-with-a-few-sporesminute-floating-resembling-RJ1WP9.jpg ". Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Order 158.—LYC0P0DIACEJ5. 8U killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.—Minute, floating, resembling Stock Photo")
RMRJ1WP9–. Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. Order 158.—LYC0P0DIACEJ5. 8U killed by drought.) Fruit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.—Minute, floating, resembling
![. Elements of botany. Botany; Botany. 224 ELEMENTS OF" BOTANY. conjugation by leaving the Spirogyra filaments in very cold water over night, and in this way the successive steps of the conjugating process may be studied by daylight. In such ways the series of phenomena shown in Fig. 195 has been clearly made out. If the student cannot follow these operations under the mi- croscope, he may at least by looking over the yellower portions of a mass of Spirogyra find threads containing fully formed zygospores, like those shown in B, Fig. 195. A'LGM.. Fig. 195. — Formation of Spores by Conjugat Stock Photo](https://c8.alamy.com/comp/RDWPK4/elements-of-botany-botany-botany-224-elements-ofquot-botany-conjugation-by-leaving-the-spirogyra-filaments-in-very-cold-water-over-night-and-in-this-way-the-successive-steps-of-the-conjugating-process-may-be-studied-by-daylight-in-such-ways-the-series-of-phenomena-shown-in-fig-195-has-been-clearly-made-out-if-the-student-cannot-follow-these-operations-under-the-mi-croscope-he-may-at-least-by-looking-over-the-yellower-portions-of-a-mass-of-spirogyra-find-threads-containing-fully-formed-zygospores-like-those-shown-in-b-fig-195-algm-fig-195-formation-of-spores-by-conjugat-RDWPK4.jpg ". Elements of botany. Botany; Botany. 224 ELEMENTS OF" BOTANY. conjugation by leaving the Spirogyra filaments in very cold water over night, and in this way the successive steps of the conjugating process may be studied by daylight. In such ways the series of phenomena shown in Fig. 195 has been clearly made out. If the student cannot follow these operations under the mi- croscope, he may at least by looking over the yellower portions of a mass of Spirogyra find threads containing fully formed zygospores, like those shown in B, Fig. 195. A'LGM.. Fig. 195. — Formation of Spores by Conjugat Stock Photo")
RMRDWPK4–. Elements of botany. Botany; Botany. 224 ELEMENTS OF" BOTANY. conjugation by leaving the Spirogyra filaments in very cold water over night, and in this way the successive steps of the conjugating process may be studied by daylight. In such ways the series of phenomena shown in Fig. 195 has been clearly made out. If the student cannot follow these operations under the mi- croscope, he may at least by looking over the yellower portions of a mass of Spirogyra find threads containing fully formed zygospores, like those shown in B, Fig. 195. A'LGM.. Fig. 195. — Formation of Spores by Conjugat
![. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. THALLOPHYTA,. 1 CordycepB Taylori, a pyrenomycetous Fiirgu which attacks caterpillars; the branched antler-like stroma has developed rfrom the sclerotlum, and its lower warted portion bears the perithecia. 2 Three perithecia; enlarged. 3 a perithecium in section. * Two asci containing filamentous spores. » Vertical section of a perithecium of Xylaria Hypoxylon. 6 Ascus of same. "^ Mycelium of Eurotium. bearing a conidial hypha (to riglit, above), a commencing fruit (to left), and a ripe ascus-fr Stock Photo](https://c8.alamy.com/comp/RDGAJR/the-natural-history-of-plants-their-forms-growth-reproduction-and-distribution-botany-thallophyta-1-cordycepb-taylori-a-pyrenomycetous-fiirgu-which-attacks-caterpillars-the-branched-antler-like-stroma-has-developed-rfrom-the-sclerotlum-and-its-lower-warted-portion-bears-the-perithecia-2-three-perithecia-enlarged-3-a-perithecium-in-section-two-asci-containing-filamentous-spores-vertical-section-of-a-perithecium-of-xylaria-hypoxylon-6-ascus-of-same-quot-mycelium-of-eurotium-bearing-a-conidial-hypha-to-riglit-above-a-commencing-fruit-to-left-and-a-ripe-ascus-fr-RDGAJR.jpg ". The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. THALLOPHYTA,. 1 CordycepB Taylori, a pyrenomycetous Fiirgu which attacks caterpillars; the branched antler-like stroma has developed rfrom the sclerotlum, and its lower warted portion bears the perithecia. 2 Three perithecia; enlarged. 3 a perithecium in section. * Two asci containing filamentous spores. » Vertical section of a perithecium of Xylaria Hypoxylon. 6 Ascus of same. "^ Mycelium of Eurotium. bearing a conidial hypha (to riglit, above), a commencing fruit (to left), and a ripe ascus-fr Stock Photo")
RMRDGAJR–. The natural history of plants, their forms, growth, reproduction, and distribution;. Botany. THALLOPHYTA,. 1 CordycepB Taylori, a pyrenomycetous Fiirgu which attacks caterpillars; the branched antler-like stroma has developed rfrom the sclerotlum, and its lower warted portion bears the perithecia. 2 Three perithecia; enlarged. 3 a perithecium in section. * Two asci containing filamentous spores. » Vertical section of a perithecium of Xylaria Hypoxylon. 6 Ascus of same. "^ Mycelium of Eurotium. bearing a conidial hypha (to riglit, above), a commencing fruit (to left), and a ripe ascus-fr
RMRDXY25–. Principles of modern biology. Biology. Fig. 12-1. The familiar fern plant is the sporophyte generation, consisting of exposed leaves (fronds), an underground stem (the rhizome), and the roots. (From The Plant World, by Fuller and Carothers. Holt, Rine- hart and Winston, Inc.) cluster of spore capsules, or sporangia. At higher magnification one can see that each sporangium is a hollow structure, containing numerous spores (Fig. 12-3). While a spo- rangium is ripening, the spores are produced from spore mother cells, or sporocytes. The spore mother cell undergoes meiosis, giving rise to four h
![. The commonly occuring wild plants of Canada [microform] : a flora for the use of beginners. Botany; Plants; Botanique; Plantes. XXIV KEY TO THE ORDERS. III. GLUMACEOUS DIVISION. Flowers without a true perianth, but subtended by thin scales called glumes. CYPEBACE.E.—Sheaths of the leaves not split 248 Gramine^.—Sheaths of the leaves split on the side away from the blade 251 SERIES II. CRYPTOGAMS. Plants without stamens and pistils, reproducing themselves by spores instead of seeds. CLASS III. PTERIDOPHYTES. Stem containing vascular as well as cellular tissue. FiLiCES.—Spores produced on the Stock Photo](https://c8.alamy.com/comp/RJ1YCD/the-commonly-occuring-wild-plants-of-canada-microform-a-flora-for-the-use-of-beginners-botany-plants-botanique-plantes-xxiv-key-to-the-orders-iii-glumaceous-division-flowers-without-a-true-perianth-but-subtended-by-thin-scales-called-glumes-cypebaceesheaths-of-the-leaves-not-split-248-graminesheaths-of-the-leaves-split-on-the-side-away-from-the-blade-251-series-ii-cryptogams-plants-without-stamens-and-pistils-reproducing-themselves-by-spores-instead-of-seeds-class-iii-pteridophytes-stem-containing-vascular-as-well-as-cellular-tissue-filicesspores-produced-on-the-RJ1YCD.jpg ". The commonly occuring wild plants of Canada [microform] : a flora for the use of beginners. Botany; Plants; Botanique; Plantes. XXIV KEY TO THE ORDERS. III. GLUMACEOUS DIVISION. Flowers without a true perianth, but subtended by thin scales called glumes. CYPEBACE.E.—Sheaths of the leaves not split 248 Gramine^.—Sheaths of the leaves split on the side away from the blade 251 SERIES II. CRYPTOGAMS. Plants without stamens and pistils, reproducing themselves by spores instead of seeds. CLASS III. PTERIDOPHYTES. Stem containing vascular as well as cellular tissue. FiLiCES.—Spores produced on the Stock Photo")
RMRJ1YCD–. The commonly occuring wild plants of Canada [microform] : a flora for the use of beginners. Botany; Plants; Botanique; Plantes. XXIV KEY TO THE ORDERS. III. GLUMACEOUS DIVISION. Flowers without a true perianth, but subtended by thin scales called glumes. CYPEBACE.E.—Sheaths of the leaves not split 248 Gramine^.—Sheaths of the leaves split on the side away from the blade 251 SERIES II. CRYPTOGAMS. Plants without stamens and pistils, reproducing themselves by spores instead of seeds. CLASS III. PTERIDOPHYTES. Stem containing vascular as well as cellular tissue. FiLiCES.—Spores produced on the
RMRE1DP1–. Class-book of botany : being outlines of the structure, physiology and classification of plants : with a flora of the United States and Canada . Botany; Botany; Botany. Okdeb 158.âLTCOPODIACB^. 811 killed by drought.) Fiuit sessile on the under side of the branches, of 2 kinds; the sterile smaller, opening all around, containing a thick body bearing 3 angular lobes (antheridia) above; the fertile a thin pericarp bursting irregularly, containing many globular, stalked sporangia each with a few spores.âMinute, floating, resembling a Jungermanuia, with filiform stems and lobed fronds. A. Cai-ol
RMRE1JMH–. Plant studies; an elementary botany. Botany. THE GREAT GROUPS OF ALG^E 261 fore, two sorts of asexual spores are produced: (1) the • tetraspores, developed in ordinary sporangia; and (2) the carpospores, developed in the cystocarp, which has been produced as the result of fertilization. OTHER CHLOROPHYLL-CONTAINING THALLOPHYTES 175. Diatoms.—These are peculiar one-celled forms, which occur in very great abundance in fresh and salt waters.. Fig. 230. A group of Diatoms : c and d, top and side views of the same form; e, colony of stalked forms attached to an alga;/ and g, top and side views of
RMRDWC2W–. The essentials of botany. Botany. IMPERFECT FUNGI 239 producing whitish or discolored spots, and eventually developing small perithecia-like structures (pycnidia) containing conidia. Species of Phyllosticta are common on leaves of Virginia creeper, wild grape, cottonwood, willow, pansy, peach, apple, wild cherry, elm, etc., while species of Septoria are to be found on leaves of box-elder, aster, thistle, evening primrose, wild lettuce, plum, elder, etc. 412. The Black-dot Fungi (Order Melanconiales) differ from the preceding mainly in the absence of a distinct perithecium, the spores develop
RMRDC26H–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fio. 74.—UncinuUi salicis. Peritheciiim. (After Tulasne.) Phyllactinia. The spherical perithecia are flattened at the poles, and enclose several asci containing two or three oval sulphur-yellow spores. The appendages are sharp-pointed hairs with swoUeu bases. Phyllactinia suffulta liebent. {Fh. guttata- Wallr.) produces white spots or coatings on the leaves of many trees, e.g. beech, hornbeam, ash, birch, hazel, oak
![. A natural history of new and rare ferns: containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic," amongst which are the new Hymenophyllums and Trichomanes. With col. illus. and wood-cuts. Ferns. Pinna of fertile Frond-under side. ASPIDIUM CARYOTIDEUM. Wallich. PLATE XLln. Cyrtomium caryoiidenm, Mooee. Aspidium—Shield Fern. Caryotideum— P In the Section Cyrtomium of Authors. A HANDSOME rare Fern, said to be as large as Cyrtomium falcatum. An evergreen stove species. Native of the East Indies. Raised from spores by Mr. N Stock Photo](https://c8.alamy.com/comp/RDWD1H/a-natural-history-of-new-and-rare-ferns-containing-species-and-varieties-none-of-which-are-included-in-any-of-the-eight-volumes-of-quotferns-british-and-exoticquot-amongst-which-are-the-new-hymenophyllums-and-trichomanes-with-col-illus-and-wood-cuts-ferns-pinna-of-fertile-frond-under-side-aspidium-caryotideum-wallich-plate-xlln-cyrtomium-caryoiidenm-mooee-aspidiumshield-fern-caryotideum-p-in-the-section-cyrtomium-of-authors-a-handsome-rare-fern-said-to-be-as-large-as-cyrtomium-falcatum-an-evergreen-stove-species-native-of-the-east-indies-raised-from-spores-by-mr-n-RDWD1H.jpg ". A natural history of new and rare ferns: containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic," amongst which are the new Hymenophyllums and Trichomanes. With col. illus. and wood-cuts. Ferns. Pinna of fertile Frond-under side. ASPIDIUM CARYOTIDEUM. Wallich. PLATE XLln. Cyrtomium caryoiidenm, Mooee. Aspidium—Shield Fern. Caryotideum— P In the Section Cyrtomium of Authors. A HANDSOME rare Fern, said to be as large as Cyrtomium falcatum. An evergreen stove species. Native of the East Indies. Raised from spores by Mr. N Stock Photo")
RMRDWD1H–. A natural history of new and rare ferns: containing species and varieties, none of which are included in any of the eight volumes of "Ferns, British and exotic," amongst which are the new Hymenophyllums and Trichomanes. With col. illus. and wood-cuts. Ferns. Pinna of fertile Frond-under side. ASPIDIUM CARYOTIDEUM. Wallich. PLATE XLln. Cyrtomium caryoiidenm, Mooee. Aspidium—Shield Fern. Caryotideum— P In the Section Cyrtomium of Authors. A HANDSOME rare Fern, said to be as large as Cyrtomium falcatum. An evergreen stove species. Native of the East Indies. Raised from spores by Mr. N
RMRDKDRP–. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. EXPLANATION OF PLATE. Fig. 1. Synchyirium papillatum, sorus and two galls with resting spores, about 125 diameters. Fig. 2-3. S. Amsinckiae, sections through sorus and three galls with resting spores, about 140 diameters. Pig. 4. S. Amsinckiae, zoospores, from stained preparation, 500 diameters. Fig. 5. 5. innominaium, section through sorus and resting spore, about 150 diameters. Fig. 6-7. 5. Andinum, se
RMRDYFFA–. A textbook of botany for colleges and universities ... Botany. Figs. 298-300. — Sporangium of SelagineUa: 298, section through tip of strobilus, showing young sporangium (two shaded cells) on stem, and below it a young sporo- phyll; 299, further development of sporangium; the superficial cell of the sporophyll containing a nucleus is to give rise to the ligule; 300, sporangium in the mother cell stage. — 298 and 299, after Miss LyoN. large mother cell and a tetrad of four very large spores. In some cases, although a tetrad of spores is started, two or three of them may not develop further, r
RMRDHBFE–. Outlines of plant life : with special reference to form and function . Botany. 196 OUTLINES OF PLANT LIFE.. Fig. 151.âSection through three spore case clusters of an aquatic femwort (Salvinia ntzians). Each is cov- ered by a double indusium. z, /, two clusters consisting of small spore cases, each containing 64 micro- spores; a, a cluster consisting of large spore cases, each containmg one megaspore. Magnified 10 diam. âAfter Sachs. between the spore cases containmg small spores and those containmg large spores (fig. 151). In the seed plants this difference in the spores is always found. The
RMRDYH50–. Ferns: British & foreign. The history, organography, classification, and enumeration of the species of garden ferns with a treatise on their cultivation, etc. etc. Ferns. 282 FEENS : BEITISH AND FOBEIGN. 162. PILtTLARIA, Linn. Plants with filiform leaves, from a creeping rhizome under â water. Sporangia (conceptacles) radical (at the base of the leaves on the rhizome), globose, coriaceous, 2-4-celled, 2-4-valved, each. Genus 162.âPlant, natural size. No. 1. cell containing different kinds of bodies:â1. (Antheridangia), consisting of vesicles containing many minute granular spores; 2. (Oo
RMRDJ2CW–. Outlines of plant life : with special reference to form and function . Botany. 192 OUTLINES OF PLANT LIFE. 271. Simple spore cases.—Spores are also formed loose in the interior of cells. Each spore-containing cell is. Fig. 144. Fig. 144.—a fructification of Clavaria aurea. The spore beds cover the upper part of the branches. Natural size.— y^^ ^^, After Kerner. Fig. 145.—A fructification of a mushroom, Amanita^kalloides. fi, the cap or pileus; 7', the veil, originally connected with edge of cap, covering the gills which radiate from the stipe, st, to the edge of cap; svo, the volva. The surf
RMRDWHGY–. Ferns: British & foreign. The history, organography, classification, and enumeration of the species of garden ferns with a treatise on their cultivation, etc. etc. Ferns. 232 PEENS : BBITISH AMD FOEEIGN. 162. PILULABIA, lArm. Plants with filiform leaves, from a creeping rhizome under water. Sporangia {emieeptacles) radical (at the base of the leaves on the rhizome), globose, coriaceous, 2-4-ceUed, 2-4-valved, each. Genos 162.—Plant, natural size. No. 1. cell containing different kinds of bodies:—1. (AntJieridangia), consisting of vesicles containing many minute granular spores; 2. {Oaplu
RMRDG9KN–. Parasitic fungi of Illinois / by T.J. Burrill. Fungi. FiGTTKB 4. Erysiphe chicoracearum, DO. A ruptured perithecium with, thread-like appendages and protrud- ing asci, each containing two spores, — magnified 90 times. Pig. 4. ^. Fig. 5. Figure 5. Undnula am- lis, Peck: a, perithe- cium with the numerous appendages (6) coiled at the tip,— magnified 100 times; c, i one of the appendages (tip) further magnified; d,anas- cus with five spores,—magni- fied 200 times. The lower, pointed end of the ascus is attached to the bottom of the cavity of the perithecium.. Please note that these images are e
RMRDG15E–. Bacteria, yeasts and molds in the home. Bacteriology; Yeast fungi; Molds (Fungi). 8o BACTERIA, YEASTS, AND MOLDS. Fig. 34. A yeast cell containing four spores. method of budding, but its contents break up into several parts. In Fig. 34 is shown one of these yeast cells which has been growing on a porcelain plate without sufficient nourishment, and it will be seen that four small bodies have formed inside of the cell. These bodies are spores and are capable of resisting for a long time a variety of adverse conditions, such as drying, heating, etc., without being injured. When the yeast cell b
RMRE3MBR–. Introduction to cryptogamic botany. Cryptogams. Fig. 67. a. Cyttaria Ghinnii, Berk., nat. size, young and old, with aacus mag- nified. Trom specimens commimioated by Sir W. J. Hooker. b. Spores of Rhizina zonaia, Berk., magnified. Gathered in Sikkim by Dr. Hooker. c. Ditto of Rhizina undidata. From South Carolina, by Be v. M. A. Curtis. d. AscopTiora elegans, Corda. From specimens gathered at King's Cliffe. Above is the vesicle filled with oblong spores, the columella, and the spores; below, the secondary fruit, each vesicle containing a veiy few spores, which are shorter and broader. times
RMRDEWRW–. Minnesota plant diseases. Plant diseases. Minnesota Plant Diseases. 269 3 S. if 5'W tar. In this condition it rests over until spring, when the cup fruiting-bodies are produced. Several cups spring from each spot and each cup is lined, on its inner surface, with a pal- isade of sacs containing eight spores each. Between the sacs. ⦠â¢â ^^t- * § '«â .' are numerous sterile fungus threads. Spotted leaves should be collected in the fall and burned to prevent a spread of the dis- ease in the following spring. The formation of the sac spores is thereby effectively prevented.. Please note that
RMRDDYAY–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 142 DISEASES OF CHOPS. Cure.—See those already described for destroying P. infestans (the potato-disease fungus). The Fusisporium of Cabbages {Fusisporium aurantiacum) has a similar life-history to F. solani. Fig. 47.—White Ensi Fungus or Cabbages {Cystopus candidus). A. Mycelium bearing couidia. x 195. B. Conidiuni (zoosporangium) producing zoospores, x 4^5. C. Oogoniom (1) and antheridium (2). x 195. D. Oospore (resting-spores). x 196. E. Inner membrane of oospore containing
RMRDC1N4–. Diseases of plants induced by cryptogamic parasites : introduction to the study of pathogenic Fungi, slime-Fungi, bacteria, & Algae . Plant diseases; Parasitic plants; Fungi. Fig. 116.âH7/poderma strobicota on Pinus Strobus. Ascus containing eight ascospores â with gelatinous coats; paraphyses with clavate ends. (After v. Tubeuf.) Fig. 117.âHypoderma strobicoia. Isolated ascospores: with and without a gelatinous coat, and one- or two-celled. (After v. Tubeuf.) some species, but have a delicate stalk in others. The spores, eight in each ascus, are never long and thread-like, but always mu
RMRDXF47–. The origin of a land flora, a theory based upon the facts of alternation. Plant morphology. 536 FILICALES. Fig. 297. Sporangium of Osmujida regalis, containing a large sporogenous tissue, surrounded by tapetum consisting in parts of three layers. (After Goebel.) To form an estimate, the number of spores produced in a single sporangium may be actually counted, or an estimate of the potential number may be based upon the number of spore-mother-cells as shown in sections. By the latter method, as applied to Osmunda regalis, since the number of spore- mother-cells in a median section is 30 to 32
![. Plants and their uses; an introduction to botany. Botany; Botany, Economic. m^('. Fiu. 327.—Water-mold (Saprolcgiita Thureti, Water-mold Family, Saprolegniaccw). A, dead fly attacked by water-mold, surrounded by radiating hyphse terminating in swarm-spore-eases, i. B, swarm- spore-case in which the spores are forming, soq. (', same, discharging swarm-spores. E, female gamatangium containing four female gametes to which comes a iirojection from the male gamrtangium that arises as a branch hyphafr'>m In-low the ftmiale gnmetangium, "-i". (Thuret, DeBary.)—"Water-molds abound Stock Photo](https://c8.alamy.com/comp/RE0TE3/plants-and-their-uses-an-introduction-to-botany-botany-botany-economic-m-fiu-327water-mold-saprolcgiita-thureti-water-mold-family-saprolegniaccw-a-dead-fly-attacked-by-water-mold-surrounded-by-radiating-hyphse-terminating-in-swarm-spore-eases-i-b-swarm-spore-case-in-which-the-spores-are-forming-soq-same-discharging-swarm-spores-e-female-gamatangium-containing-four-female-gametes-to-which-comes-a-iirojection-from-the-male-gamrtangium-that-arises-as-a-branch-hyphafrgtm-in-low-the-ftmiale-gnmetangium-quot-iquot-thuret-debaryquotwater-molds-abound-RE0TE3.jpg ". Plants and their uses; an introduction to botany. Botany; Botany, Economic. m^('. Fiu. 327.—Water-mold (Saprolcgiita Thureti, Water-mold Family, Saprolegniaccw). A, dead fly attacked by water-mold, surrounded by radiating hyphse terminating in swarm-spore-eases, i. B, swarm- spore-case in which the spores are forming, soq. (', same, discharging swarm-spores. E, female gamatangium containing four female gametes to which comes a iirojection from the male gamrtangium that arises as a branch hyphafr'>m In-low the ftmiale gnmetangium, "-i". (Thuret, DeBary.)—"Water-molds abound Stock Photo")
RMRE0TE3–. Plants and their uses; an introduction to botany. Botany; Botany, Economic. m^('. Fiu. 327.—Water-mold (Saprolcgiita Thureti, Water-mold Family, Saprolegniaccw). A, dead fly attacked by water-mold, surrounded by radiating hyphse terminating in swarm-spore-eases, i. B, swarm- spore-case in which the spores are forming, soq. (', same, discharging swarm-spores. E, female gamatangium containing four female gametes to which comes a iirojection from the male gamrtangium that arises as a branch hyphafr'>m In-low the ftmiale gnmetangium, "-i". (Thuret, DeBary.)—"Water-molds abound
RMRDG159–. Bacteria, yeasts and molds in the home. Bacteriology; Yeast fungi; Molds (Fungi). Fig. 34. A yeast cell containing four spores. method of budding, but its contents break up into several parts. In Fig. 34 is shown one of these yeast cells which has been growing on a porcelain plate without sufficient nourishment, and it will be seen that four small bodies have formed inside of the cell. These bodies are spores and are capable of resisting for a long time a variety of adverse conditions, such as drying, heating, etc., without being injured. When the yeast cell breaks, the little spores burst f
RMRDBFTX–. Diseases of greenhouse crops and their control . Vegetables; Plant diseases; Plant diseases. Fig. 17. Cauliflower Diseases. a, Youn^ cauliflower plant with club root (after Jones, L. R.). &• cross section of an infected root, c. cross section of a young healthy root (b-c after Woronin), d. host cell containing Myxomycete spores (after Lutman, B. F.).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Taubenhaus, Jacob J
RMRDW746–. Experiments with plants. Botany. PLANTS WUICIJ CAUHli DKJVA Y 407 shown in Fig. 'I'M). The long, branchiug appendages of the rounded black bodies are very characteristie. Press on the cover-glass with a rubber pencil-eraser until some of the black bodies are ci'uslied; we may then see the spore-sacs, containing four or more spores. Mildews ai'e very common on both wild and culti- vated plants and do a large amount of dam- age. They do ^^^ ^'J'^' not penetrate to any great extent into the leaf but a D S O r D nUtri- 230. Peritliecium of the common llildew of the Lilac; spore- Tnfinf Viv mp'in
RMRDGX22–. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 142 DISEASES OF CROPS. Cure.—See those already described for destroying P. infestans (the potato-disease fungus). The Fusisporium of Cabbages {Fusisporium aurantiacum) has a similar life-history to F. solani. Fig. 47.—White Bust Fungus of Cabbages (Cystoput candidus). A. Mycelium bearing conidia. x 195. B. Conidium (zoosporangium) producing zoospores, x 405, C. Oogonium (1) and antheridium (2). x 195. D. Oospore (resting-spores). x 195. E. Inner membrane of oospore containing z
RMRPXM1B–. Text-book of botany, morphological and physiological. Botany. FIG. 272.—Funaria hygrometrica; part of a transverse section through the operculum. FIG. 273.—A longitudinal section of the theca of Poly- trichttm piliferum (after Lantzius-Beninga, X 15}; B the transverse section (X about 5); iv wall of the theca, etc operculum, c c columella, p peristome, ep epiphragm, a a annulus, i i the air-cavities penetrated by alga-like cel- lular filaments, s spore-sac, containing the primary mother- cells of the spores, st the seta, the upper part of which forms the apophysis ap. easily be understood by
RMRDAAFW–. A text-book of botany for secondary schools. Botany. A B Fig. 16.5.—Mnrchantia: A, thallus bearing archegonial branches of various ages; B, section through portion of archegonial dislc, showing pen<lant archegonia.—After Kny. Fig. 166.—Marchan- tia: archegonium, containing an egg; sperms seen at the mouth of the neck. —.fter Kny. 95. The spore-case. it begins to germinate;. Fig. 167.—Marchantia: A, spo- rophyte formed within the enlarged archegonium, show- ing the spore-bearing (a) and sterile (6) regions; B, spore- case discharging spores, the sterile region of tlie sporo- phyte having
RMRDYH67–. Ferns: British & foreign. The history, organography, classification, and enumeration of the species of garden ferns with a treatise on their cultivation, etc. etc. Ferns. AN ENUMERATION OF CULTIVATED MENS. 281 on the footstalk, 2-valved, containing numerous obovatc recep- tacles in two longitudiual series, tearing cellular vesicles of. Gei.us i6t.—Hint with spore-cases, natural size. No. i. two kinds—1. (Antheridangia), containing numerous small spores; 2. (Ooplwridangia), containing a single large spore. 1. M. quadrifolia, Linn.; Willd. Sp. PI. 5, p. 538; Settle. Crypt. 1.173.—Germany.
RMRDAAK9–. A text-book of botany for secondary schools. Botany. FUNGI 151. Fig. 143.—a cluster-cup (on barberry) of wheat-rust containing chains of spring spores.—After Stka.s- BURGER. usually the under one, groups of sporophores, each group surrounded by a cup-like structure; and hence these cup- like clusters have been called cluster-cups. In these cluster- cups the spores oc- cur in long chains, and may be called spring spores or clus- ter-cup spores (Fig. 143). These spring spores on the bar- berry leaves are scattered by the wind and infect young wheat plants; that is, germinate and produce myce-
RMRE4M5K–. Manual of bacteriology. Bacteriology. i^' Fig. 158. / Fig. 159. Fig. 160.. *-• ••V • ^. Fig. 162. -Various phases of the benign tertian parasite. Fig, 157. Several young ring-shaped amccbnlae within the red corpuscles, one of the latter en- larged and showing a dotted appearance. Fig. 158. A larger amosbula containing pigment granules. Fig. 159. Two large ama:bulas, exemplifying the great variation in form. Fig. 160. Large amcebulae assuming the spherical form andshowing isolated fragments of chromatin — preparatory to sporulation. Fig. 161. Sporocyte, which has produced eighteen spores,
RMRDKDXC–. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. CALYCULARIA RADICULOSA CAMPBELL 59. Fig. 12. A, apical region of the sporogonium of Calycularia radiculosa, showing the thickenings on the cell walls, x 90. B, lateral wall of the same sporogonium. C, ripe spores and elaters, x about 200. D, very much attenuated elaters, x 350. E, typical elaters, x 350. F, ripe spore, x 350. G, section of spore. H, lower part of seta and foot, f, x 90. /, apex of sporog
RMRDWHH4–. Ferns: British & foreign. The history, organography, classification, and enumeration of the species of garden ferns with a treatise on their cultivation, etc. etc. Ferns. AN ENUMiiEATION OP CULTIVATED PIKNS. 281 on the footstalk, 2-valved, containing numerous obovate recep- tacles in two longitudinal series, bearing cellular vesicles of. Genus 161.—Plant with spore-ca^es, natural size. No, 1. two kinds— 1. {Antheridangia), containing numerous small spores; 2. (Oophoridangia), containing a single large spore. 1. M. quadrifolia, Litm.; Willd. 8p. PI. 5, p. 538; Schh. Crypt. 1.173.—Germany.
![. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. V] LABOULBENIALES 179 A trichogyne, trlchophoric cell and oogonium are formed in the usual way (fig. 131). According to Faull nuclear division takes place both in the oogo- nium, and in the trichophoric cell, and the partition between these two breaks down so that a long cell containing a row of four nuclei is formed (fig. 14S a). ?^fs Fig. 142. Amorfhomyces Fala- griae Thaxter; paired spores; after Thaxter.. Fig. 143. Amorphomyces FalagriaeT'3.yite'c; male and female individuals; a. young, b. mature; after Thaxter. Walls cut off the up Stock Photo](https://c8.alamy.com/comp/RDX121/fungi-ascomycetes-ustilaginales-uredinales-fungi-v-laboulbeniales-179-a-trichogyne-trlchophoric-cell-and-oogonium-are-formed-in-the-usual-way-fig-131-according-to-faull-nuclear-division-takes-place-both-in-the-oogo-nium-and-in-the-trichophoric-cell-and-the-partition-between-these-two-breaks-down-so-that-a-long-cell-containing-a-row-of-four-nuclei-is-formed-fig-14s-a-fs-fig-142-amorfhomyces-fala-griae-thaxter-paired-spores-after-thaxter-fig-143-amorphomyces-falagriaet3yitec-male-and-female-individuals-a-young-b-mature-after-thaxter-walls-cut-off-the-up-RDX121.jpg ". Fungi, ascomycetes, ustilaginales, uredinales. Fungi. V] LABOULBENIALES 179 A trichogyne, trlchophoric cell and oogonium are formed in the usual way (fig. 131). According to Faull nuclear division takes place both in the oogo- nium, and in the trichophoric cell, and the partition between these two breaks down so that a long cell containing a row of four nuclei is formed (fig. 14S a). ?^fs Fig. 142. Amorfhomyces Fala- griae Thaxter; paired spores; after Thaxter.. Fig. 143. Amorphomyces FalagriaeT'3.yite'c; male and female individuals; a. young, b. mature; after Thaxter. Walls cut off the up Stock Photo")
RMRDX121–. Fungi, ascomycetes, ustilaginales, uredinales. Fungi. V] LABOULBENIALES 179 A trichogyne, trlchophoric cell and oogonium are formed in the usual way (fig. 131). According to Faull nuclear division takes place both in the oogo- nium, and in the trichophoric cell, and the partition between these two breaks down so that a long cell containing a row of four nuclei is formed (fig. 14S a). ?^fs Fig. 142. Amorfhomyces Fala- griae Thaxter; paired spores; after Thaxter.. Fig. 143. Amorphomyces FalagriaeT'3.yite'c; male and female individuals; a. young, b. mature; after Thaxter. Walls cut off the up
RMRE22EA–. A text-book of bacteriology. Bacteriology. Fio. 145. Fio. 146. Fio. 145.—Bacillus coli communis in nutrient gelatin containing twenty percent of gelatin, end of two weeks, showing moss-like tufts along the line of growth. CSternberg.) FiQ. 146—A portion of the growtli shown in Fig 147, at a, magnified about six diameters. From a photograph. CSternberg.) after twenty-four hours. These results give confirmation to the view that the bacillus under consideration does not form spores. This view receives further support from the experiments of Wal- liczek (1894), who found that when dried upon pie
RMRDYH4R–. Ferns: British & foreign. The history, organography, classification, and enumeration of the species of garden ferns with a treatise on their cultivation, etc. etc. Ferns. AN ENUMERATION OF CULTIVATED FERNS. 283 axis of the leaves at their base, globose, 1-celled, traversed by thread-like receptacles of two kinds:—1. (Antlieridangia), containing numerous small spores; 2. (Ooplwridangia), con- atining large 4-sided spores.. Genus iGj.—Plant, natural fcize. No. 1. 1 I. lacustris, Linn.; Willd. Sp. PI. 5, p. 534; Bolt. Fil. 141 ; Schk. Crypt. 1.173; Eng. Bot. 1084.— Europe, Britain.. Please
RMRE0N3H–. A manual of botany. Botany. Fig. 851. Group of three uredospores, ui and one teleutospore, t, springing from mycelium &h. Fig. 852. Section through leaf of the Barberry infested with Puccinia graminis. o. Epidermis of upper surface of leaf, sp. Spermogonia. p,p. Layers of cells (^ertrfmm), surrounding a, a, the fficidium fruits. After Sachs. same name. They produce spermatia in the same way as the latter. Upon the under surface large spherical bodies are formed (fig. 852), containing a hymenial layer of sterigmata which cut off from their apices a succession of spores known as CBcidiosp
RMRDE1J0–. Diseases of bees. Bees. Sept. 1,1932 Commercial Honey and Spread oj American Foulbrood 269 c c flasks bv adding 4 c c of a dilution to 36 c c of sterUe water. The series of dilutions containing gradually decreasing numbers of spores per cubic centimeter to be used in inoculating the culture medium were then prepared as indicated in Table 4. Sterile burettes were used in adding the proper proportions of spore suspension or spore- suspension dilutions to the proper quantities of sterile water in sterile test tubes, in order to make up the desired series of dilutions contain- ing approximately
RMRDW9NW–. Botany for high schools and colleges. Botany. 320 BOTANY. for a few species only.* In all which have been examined the spore sends out a promycelium, which is generally short and jointed, and upon this several sporidia are produced, much as in the TJredinese. In Tilletia caries the promyce- lium produces a tuft of slender branches (Fig. 234, h), which. Fig. 221. Pis. 232. Pig. 223. Pig. 231.—Spore-formation in VsHlago Maydls. a, the end of a spore-forming hy- pha containing a row of young spores; 6, anotlier spore-forming hypha, contaming two young spores; c, a spore nearly ripe, still surro
RMRDG9KC–. Parasitic fungi of Illinois / by T.J. Burrill. Fungi. Parasitic Fungi of Illinois. 39*?. Figure 7. Podosphsera ooeycanthx, (DC.) DBy.: a, pericthecium with dichoto- mously forked appendages J,— magnified 90 times; c, a tip of an appendage more magnified; 6, the single ascus with eight spores,— magni- fied 325 times. Fig. 8. Figure 8. Microsphsera SavmeiajBeik.: a,perithecium with its dichotomously forked appendages 6,— magnified 75 times; c, a tip of an appendage more magnified; d, one of the several asci containing eight spores,— magnified 375 times; e, a group of asci from one perithecium,
RMRDE352–. Minnesota plant diseases. Plant diseases. 354 Minnesota Plant Diseases.. Fig. 187.—Spores of the apple scab fungus. A. Portion of a section through a scab spot on an apple; b, fungus threads spreading under and lifting the cuticle; a and c, partly disorganized cells of the apple; e, healthy cells of the apple. B. Two spore-bearing stalks giving rise to summer Spores. C. Spores germinating. D. Portion of a section through an affected leaf of an apple which has lain on the ground over winter and has given rise to the winter spore stage of the disease; g, spore-case containing a bundle of spore
RMRDWA8F–. Botany for high schools and colleges. Botany. 320 BOTANY. for a few species only. * In all which have been examinea the spore sends out a promycelium, which is generally short and jointed, and upon this several sporidia are produced, much as in the Uredineae. In Tilletia caries the promyce- lium produces a tuft of slender branches (Fig. 224, h), which a. Fjg. S81. Fig. 222. Fio. 23.3. Fig. 221.—Spore-formation in Ustilago MaydU. a, the end of a spore-forming hy- pha containing il row of young spores ; 6, anotlier spore-forming llypha, containing two young spores; c, a spore nearly ripe, stil
RMRDWHGT–. Ferns: British & foreign. The history, organography, classification, and enumeration of the species of garden ferns with a treatise on their cultivation, etc. etc. Ferns. AN ENUMEEATION OF CULTIVATED FERNS. 283 axis of the leaves at their base, globose, 1-celled, traversed by thread-like receptacles of two kinds: — 1. {Antheridangia), containing numerous small spores; 2. {Oophoridangia), con- atining large 4-sided spores.. Qenns 163,—Flaut, uataral size, No, 1. 1. 1. laetistris, Lirni.; WilU. Sp. PI. 5, p. 534; Bolt. Fil. <.41; Schk. Crypt. 1.173 j Eng. Bot. 1084.— Europe, Britain.. P
RMRDDB8K–. The fungi which cause plant disease . Plant diseases; Fungi. 244 THE FUNGI WHICH CAUSE PLANT DISEASE M. fragarise (Tul.) Lin.''^ Perithecia on leaves, are produced late in the season, globose, subepidermal, membranous, black, thin-walled; asci few, clavate,. Fig. 179.—Mycosphaerella fragariEe. ft, conidiophores buret- ing through the epidermis; c, arising from apex of a pycnidium; d, summer spores, one germinating; e, s^tion of a spermogonium; /, section of perithecium; g, ascus containing eight two-celled spores. Aft^er Longyear. 8-spored, 4Q ii long; spores hyaline, 2-celled, with acute ti
RMRDDB1G–. The fungi which cause plant disease . Plant diseases; Fungi. 254 THE FUNGI WHICH CAUSE PLANT DISEASE. Fio. 185.—^V. insequalis. A, portion of a section through a scab spot on apple; 6, spread- ing under and lifting the cuticle, a; c, partly disorganized cells of the apple; e, healthy cells of the apple. B, two conidiophores with summer spores /. C, spores ger- minating. D, portion of a section showing a perithecium and asci. E, two asci, each containing 8 two-celled spores, three of which are shown at F. After Longyear.. Please note that these images are extracted from scanned page images th
RMRDE68F–. The fungi which cause plant disease . Plant diseases; Fungi. 314 THE FUNGI WHICH CAUSE PLANT DISEASE spore-balls black, opaque, oblong to spherical or polyhedral, usually containing one hundred or more firmly agglutinated spores, chiefly 50-180 M in length; spores from nearly hyaline, to light reddish- brown, outer coat more or less folded in ridges, often spiny, ovoid to subspherical or polyhedral, chiefly 7-10 n or rarely 12 /x in Fio. 229.—^Tolyposporium. Spore length. ball germination. After Brefeld. ^ t. • n- • ii^ On Panicum crus-galh m the United States east of the Rocky Mountains als
RMRDE5K8–. The fungi which cause plant disease . Plant diseases; Fungi. THE FUNGI WHICH CAUSE PLAXT DISEASE 441 Fistulina Buller (p. 440) Sporophore fleshy, laterallj^ short-stipitate, hymcnial sur- face at first granular, then each granule becoming a tube; these â are approximate but not united; spores bro-^ra in mass. Fig. 314. A genus of a half dozen species.. Fig. 313.âLcnzitcs betulina. After Clements. F. hepatica (Scha.) Fr. Cap 8-20 cm. wide, bright-red or red-brown, liver-shaped to shelf-like, more or less lobed, smooth, more or less sticky when wet; flesh containing reddish fibers; stem short,
RMRDHN0W–. British fungus-flora. A classified text-book of mycology. Fungi. NEOTTIELLA. 373 curved pedicel, 8-spored; spores irregularly biseriate, fusi- form, often very slightly inequilateral, hyaline, continuous, 2-4-guttulate, 28-32 x 6-8 jj. ; paraphyses filiform, septate, apex clavate and containing ora,nge granules. Peziza coraUina, Cooke, Grrev., vol. iii. fig. 83; Cke., Mycogr., p. 19, fig. 30; Phil., Brit. Disc, p. 102. Ascoholus coceineus, Crouan, in Fuckel's Fung. Ehen., exs., n. 1864. Humaria coccinea, Sacc, Syll., viii. n. 456. Leucoloma coccinea, Fckl., Symb. Myc, p. 318.. /- Neottiella
![. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. I-"ig. 1. Fern prothalli five months old, grown from spores on a turn-table revolving four times a minute. Fig. 3. Fern prothalli of same age, from same lot of spores, receiving light fmm one side only. Fig. 2. Fern prothalli five moutlis filrl, grown from spores on a turn-taltle revolving four times a minute. Fig. 4. Fern prothalli of same age, from same lot of sfH.ires, receiving light from one si Stock Photo](https://c8.alamy.com/comp/RDKDWT/dudley-memorial-volume-containing-a-paper-by-william-russel-dudley-and-appreciations-and-contributions-in-his-memory-by-friends-and-colleagues-dudley-william-russel-1849-1911-botany-i-quotig-1-fern-prothalli-five-months-old-grown-from-spores-on-a-turn-table-revolving-four-times-a-minute-fig-3-fern-prothalli-of-same-age-from-same-lot-of-spores-receiving-light-fmm-one-side-only-fig-2-fern-prothalli-five-moutlis-filrl-grown-from-spores-on-a-turn-taltle-revolving-four-times-a-minute-fig-4-fern-prothalli-of-same-age-from-same-lot-of-sfhires-receiving-light-from-one-si-RDKDWT.jpg ". Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. I-"ig. 1. Fern prothalli five months old, grown from spores on a turn-table revolving four times a minute. Fig. 3. Fern prothalli of same age, from same lot of spores, receiving light fmm one side only. Fig. 2. Fern prothalli five moutlis filrl, grown from spores on a turn-taltle revolving four times a minute. Fig. 4. Fern prothalli of same age, from same lot of sfH.ires, receiving light from one si Stock Photo")
RMRDKDWT–. Dudley memorial volume, containing a paper by William Russel Dudley and appreciations and contributions in his memory by friends and colleagues ... Dudley, William Russel, 1849-1911; Botany. I-"ig. 1. Fern prothalli five months old, grown from spores on a turn-table revolving four times a minute. Fig. 3. Fern prothalli of same age, from same lot of spores, receiving light fmm one side only. Fig. 2. Fern prothalli five moutlis filrl, grown from spores on a turn-taltle revolving four times a minute. Fig. 4. Fern prothalli of same age, from same lot of sfH.ires, receiving light from one si
RMRDDC30–. Photomicrographs of botanical studies. Photomicrography. Limiting tissue of thallus. Pr(jtective hairs. Oogonia in varicius stages of development. iMouth of conceptacle. 4.—Y.S. Apothecia, Parmelia parietina.. Apothecia containing spores. Mycelium. Unicellular alga:. Rhizoides or root-hairs.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Flatters, Milborne & McKechnie Ltd. Manchester : Flaters, Milborne & McKe
RMRDTJ2M–. Introduction to structural and systematic botany, and vegetable physiology. Botany. 604 ILLUSTRATIONS OF THE NATURAL ORDERS. lid, containing spores usually mixed with elaters (which are thin, thread-like cells, containing one or two spiral fibres, uncoiling elas- tically at maturity). Vegetation sometimes frondose, i. e. the stem and leaves confluent into an expanded leaf-like mass ; sometimes foliaceous, when the leaves are distinct from the stem, as in true Mosses: the leaves are entire or cleft, two-ranked, and often with an imperfect qr rudimentary row (amphiffastria) on the under side o
RMRDG9KW–. Parasitic fungi of Illinois / by T.J. Burrill. Fungi. 396 ItUnois State Laboratory of J^aturat History.. FiGTTKB 4. Erysiphe chicoracearum, DO. A ruptured perithecium with, thread-like appendages and protrud- ing asci, each containing two spores, — magnified 90 times. Pig. 4. ^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Burrill, Thomas J. (Thomas Jonathan), 1839-1916; Earle, F. S. (Franklin Sumner), 1856-1929. Peori
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