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NOTES ON THE GENUS CISTANCHE (OROBANCHACEAE) IN IRAN Sh. Saeidi Mehrvarz & R. Shahi Shavvon Received: 02.06.2008. Accepted for publication: 24.11.2008 Saeidi Mehrvarz, M. & Shahi Shavvon, R. 2008 12 31: Notes on the genus Cistanche (Orobanchaceae) in Iran. Iran. J. Bot, 14 (2): 95-99. Tehran. The genus Cistanche Hofmmg. & Link. has seven species in Iran of which one taxon is endemic to area of “Flora Iranica”. During reconsidering of Orobanchaceae for the Farsi version of Flora of Iran we found a new subspecies of Cistanche which is described as C. flava (C. A. Mey.) Korsh. subsp. bicolor Saeidi & Shahi. Moreover, C. eremodoxa Bornm., previously reported from Khorassan province, is proposed as a synonym of C. ambigua (Bunge) G. Beck. A diagnostic key to all species of Cistanche distributed in Iran is also provided. For each species, ecology and some taxonomic remarks are presented. Shahryar Saeidi Mehrvarz (correspondence, e-mail: saeidimz@guilan.ac.ir) & Robabeh Shahi Shavvon, Department of Biology, Faculty of Science, University of Guilan, P. O. Box 41335-1914, Rasht. Key words. Cistanche, Taxonomy, new subspecies, synonymy, Iran. ‫( در اﻳﺮان‬Orobanchaceae) Cistanche ‫ﻣﻄﺎﻟﻌﺎﺗﻲ ﺑﺮ روي ﺟﻨﺲ‬ .‫ اﺳﺘﺎدﻳﺎر ﮔﺮوه زﻳﺴﺖ ﺷﻨﺎﺳﻲ داﻧﺸﮕﺎه ﮔﻴﻼن‬،‫ﺷﻬﺮﻳﺎر ﺳﻌﻴﺪي ﻣﻬﺮورز‬ .‫ داﻧﺸﺠﻮي ﻛﺎرﺷﻨﺎﺳﻲ ارﺷﺪ ﮔﺮوه زﻳﺴﺖ ﺷﻨﺎﺳﻲ داﻧﺸﮕﺎه ﮔﻴﻼن‬،‫رﺑﺎﺑﻪ ﺷﺎﻫﻲ ﺷﺎوون‬ ‫ در راﺳﺘﺎي ﺗﺪوﻳﻦ ﺗﻴﺮه‬.‫ ﮔﻮﻧﻪ اﺳﺖ ﻛﻪ ﻳﻚ ﮔﻮﻧﻪ آن اﻧﺤﺼﺎري ﻧﺎﺣﻴﻪ "ﻓﻠﻮرا اﻳﺮاﻧﻴﻜﺎ" اﺳﺖ‬7 ‫ در اﻳﺮان داراي‬Cistanche ‫ﺟﻨﺲ‬ ‫ ﺑﺮاي اوﻟﻴﻦ ﺑﺎر از اﻳﺮان ﮔﺰارش‬C. flava subsp. bicolor ‫ ﺑﺮاي ﻓﻠﻮر اﻳﺮان ﺑﻪ زﺑﺎن ﻓﺎرﺳﻲ ﻳﻚ زﻳﺮ ﮔﻮﻧﻪ ﺟﺪﻳﺪ ﺑﻨﺎم‬Orobanchaceae ،‫ ﻛﻠﻴﺪ ﺷﻨﺎﺳﺎﻳﻲ‬.‫ ﭘﻴﺸﻨﻬﺎد ﻣﻲﺷﻮد‬C. ambigua ‫ ﻛﻪ ﻗﺒﻼً از اﺳﺘﺎن ﺧﺮاﺳﺎن ﮔﺰارش ﮔﺮدﻳﺪه ﺑﻮد ﻣﺘﺮادف ﺑﺎ‬C. eremodoxa ‫ ﻫﻤﭽﻨﻴﻦ‬.‫ﻣﻲﮔﺮدد‬ .‫وﻳﮋﮔﻴﻬﺎي اﻛﻮﻟﻮژي و ﺗﺎﻛﺴﻮ ﻧﻮﻣﻴﻜﻲ ﮔﻮﻧﻪ ﻫﺎي اﻳﻦ ﺟﻨﺲ ﺑﻴﺎن ﻣﻲﺷﻮد‬ Introduction Cistanche with about 18 species is distributed in the arid and semi-arid regions of the world (Blatter 1921; Agrawal 1984; Musselman 1984). In Iran, this genus contains seven species including: C. ambigua (Bunge) Beck, C. fissa (C. A. Mey.) Beck, C. flava (C. A. Mey.) Korsh., C. laxiflora Aitch. & Hemsl., C. ridgewayana Aitch. & Hemsl., C. salsa (C. A. Mey.) Beck and C. tubulosa (Schrenk) Wight. Cistanche comprises holoparasite and perennial herbs, with alternative leaves and flowers arranged in spike or racemes. Its corolla is subactinomorphic and calyx lobes are rounded at the margin. The chromosome number 2n=40 has been recorded for Cistanche by Schneeweiss et al. (2004). Recently molecular phylogenetical studies of some species of Cistanche including C. tubulosa and C. salsa have revealed that they were not closely related to each other (Moriya et al., 1995; Tomari et al., 2002; Tomari et al., 2003). There is no detailed taxonomic study on Cistanche in Iran except for that presented in Flora Iranica (Rechinger, 1964), which lacks taxonomic description of the species, but encompasses a diagnostic key and notes on the distribution of the species. Gilli (1976) who considered 6 species of this genus in Iran also presented notes on geographical distribution of the species and an identification key to them. The present paper contributes to the ongoing taxonomic revision of Cistanche in Iran. A short Latin diagnosis, description of the new subspecies of Cistanche flava and its differences with the typical subspecies are presented. Material and methods This work is mainly based on the study of herbarium materials deposited in main Iranian herbaria, i.e., IRAN. JOURN. BOT. 14 (2), 2008 Saeidi Mehrvarz & Shahi Shavvon 96 Table 1. The comparison of Cistanche flava subsp. flava and C. flava subsp. bicolor C. flava subsp. bicolor Characters C. flava subsp. flava Corolla color pale yellow yellow with violet limb equal or unequal, when unequal dorsal unequal, one of the lateral lobes shorter Shape of the calyx lobe lobe shorter than the other lobes than the other lobes Pubescence of calyx lobes hairy along the margin absent Anther apex obtuse mucronate FUHM, IRAN, TARI, TUH and author’s own collection from wild populations which are deposited in the herbarium of Guilan University (GUH). In addition, the studied species were compared with type specimens and authentic materials in the herbaria: K, B, LE and Gazi University in Ankara. Characters were selected from color and density of hairs on the stem and leaf; length bracts and presence of pubescence, presence or absence of bractlets, length of bractlets and their pubescence; number, shape, size and pubescence of the calyx lobes; color of flowers and anthers; capsule shape and the number of its valves. Selected localities representing the distribution of seven species of Cistanche distributed in Iran are given in the appendix. Results and Discussion The main result of this paper is recognizing a new subspecies of C. flava. The new subspecies is easily distinguishable from the typical subspecies by the color of corolla, absence of hairs on lobes of calyx and the apex of anthers. The comparison of the material of the new subspecies with the type specimen in LE (Azerbaijan, between Baku and Salijanami, 1947.11.7, Novopokrosky 899) also confirmed that the differences are considerable enough to represent a new taxon. The differences between two subspecies are shown in Table 1. Cistanche flava (C. A. Mey.) Korsh. subsp. bicolor Saeidi & Shahi, subsp. nov. Type:. Iran, Semnan, Touran protected area, 3 km from Chah-jam to Toroud, 1100 m, 1978.4.23, Freitag & Mozaffarian 28437 (holo. TARI). (Fig. 1). Calyx lobis lateralibus quam ceteris brevioribus (nec lobis dorsalibus quam ceteris brevioribus), margine glabris (nec pubescentibus). Corolla flava, limbo violaceo (nec pallide flavo). Anthera apice mucronata (nec obtusa). Flowering and fruiting time. Apr.-Jun. Notes on the ecology, distribution and affinities of Cistanche in Iran. Cistanche tubulosa is a highly polymorphic species which is adapted to different ecological conditions such as dry habitats, sea coasts and sand dunes with sufficient water supply and prefers clay, gypsum and salty soils. For various reasons, this species has a wide distribution and many hosts in Iran. It is the most frequent species of Cistanche in Iran and in the world. Cistanche tubulosa is closest to C. flava by having flower color, calyx shape and some other characters similar to that, but there are distinct differences between them. The bracts of C. tubulosa are oblate or ovate-lanceolate, while the bracts of C. flava are oblate or lanceolate-linear. Also the bractlets in C. tubulosa are smaller than the calyx, whereas they are as long as calyx or longer than the calyx in C. flava. Cistanche flava has a restricted distribution in center of Iran. Cistanche laxiflora is adapted to different ecological conditions. This species lives on non-saline conditions, it also thrives under saline soil and is widely distributed through the central region of Iran. Its type specimen is collected from Harirud river in Afghanistan. This species is very similar to C. tubulosa, but C. laxiflora has lax inflorescence, while C. tubulosa has dense inflorescence. Furthermore, C. laxiflora differs from C. tubulosa in length and width of inflorescence and its proportion to plant height. This species is endemic to the area of Flora Iranica (Rechinger1964). Cistanche salsa is adapted to sandy and salty soils and coast of salty rivers. It is a halophyte plant and Anabasis is known as its only host. This species differs from C. ambigua in corolla color, presence or absence of woolly-hairs on the dorsal surface of bract and its size. The species C. ambigua and C. eremodoxa were recorded as separate species in the Flora Iranica, but the occurrence of C. ambigua was considered as doubtful in Iran (Rechinger 1964). These species are said to differ in presence or absence of hairs at the margin of corolla lobes. Cistanche eremodoxa was reported by Bornmüller (1936) from Khorassan province in Iran; while Gilli (1976) and Schischkin (2000) considered it as a synonym of C. ambigua. Based on the examined herbarium specimens and observation of the type specimen in Berlin (B), it is reasonable to propose C. eremodoxa as a synonym of C. ambigua. A list of host plants of different species of Cistanche in Iran is given in Table 2. 97 Cistanche in Iran IRAN. JOURN. BOT. 14 (2), 2008 Table 2. The host plants of different species of Cistanche in Iran. Species Host plants C. tubulosa Zygophyllum, Haloxylon, Calligonum, Prosopis, Pteropyrum, Tamarix C. flava Calligonum, Suaeda, Alhagi C. laxiflora Petropyrum, Seidlitzia C. ambigua Calligonum C. salsa Anabasis C. ridgewayana Tamarix C. fissa Artemisia Identification key to Cistanche species distributed in Iran 1- Flowers with no or only one bractlet C. ridgewayana - Flowers with two bractlets 2 2. Calyx with 4-5 heteromorphic lobes, deeply excised on the side of rachis and back lobe in form of small sharp tooth or the lobe absolutely absent C. fissa - Calyx with 5 isomorphic lobes 3 3. Bracts woolly along the edges. Anthers attenuate at base and aristate at apex 4 - Bracts glabrous or rarely hairy along the edges. Anthers roundish at base and obtuse, mucronate, or rarely acuminate at apex 5 4. Corolla yellow, with yellowish-violet limbs. Bracts woolly on dorsal surface, more than two times as long as calyx. Bractlets lanceolate-linear C. salsa - Corolla cream or white, with bluish-violet limbs. Bracts glabrous on dorsal surface; equal to or 1.5 times as long as calyx. Bractlets oblong-linear C. ambigua 5. Flowers lax. Inflorescence 1.5-3.5 times as long as width. Plants at least three times taller than the inflorescence C. laxiflora - Flowers dense. Inflorescence 3.5-6 times as long as width. Plants 2-3 times as tall as the inflorescence 6 6. Bracts ovate or oblong–lanceolate, slightly longer to slightly shorter than the calyx C. tubulosa - Bracts lanceolate or oblong-linear, much longer than the calyx, as long as or longer than the corolla (C. flava) 7 7. Corolla pale yellow. Calyx lobes equal or unequal, when unequal the abaxial lobe shorter than the others, hairy along edges. Anthers obtuse at apex C. flava subsp. flava - Corolla yellow with violet limb. Calyx lobes unequal, one of the lateral lobes shorter than others, glabrous. Anthers mucronate at apex C. flava subsp. bicolor Appendix: C. tubulosa: Esfahan: 23 km NE Kashan, 750 m, Babakhanloo, Amin & Bazarghan 17821.Yazd: 54 km Bafgh to Sheitoor, near Gazestan, 2200 m, Assadi & Bazghosha 56076; Ardakan, Toot and Anjirvand, 1800m, Mozaffarian 77411; Near Yazd, 1000m, Rechinger 2704. Fars: 43 km from Lar to Bastak, 400m, Assadi & Sardabi 41846; Lar, 800m, Iranshahr 32311 (IRAN); Bandare Lenghe, Tonbe koochak Island, 10 m, Mozaffarian 63586; Shatvar Island, Aminirad 33505 (IRAN); Bostan, Banifarur Island, Terme & Karavar 26565 (IRAN); Bandar Abbas, Bandare Khamir, Shahi & Saeidi 13229. Bushehr: Farsi Island, Tehrani & Sangari 26566 (IRAN); Dayyer, Morghi Island, Tehrani & Sangari 26567 (IRAN). Khuzestan: Near Ahvaz, Mobayen 8831 (IRAN); Mahshahr, Boune Island, Tehrani & Eskandari 33506/1 (IRAN); NE Susangherd, Farhe region, 40 m, Mozaffarian 53474 (IRAN); NE Bostan, around Misho Dagh mountain, 50200 m, Mozaffarian 53740 (IRAN). Kerman: Ahmad Abad, Iranshahr 32314 (IRAN); Jiroft, Maraz, 18 km SE Pimjan, 750-900 m, Tehrani & Mousavi 32304 (IRAN); Jiroft, Ghaleye Ghanj to Shams Abad, Shah Abad, 450 m, Mousavi & Tehrani s. n. (IRAN); Bemani, Shah Mardi, Mousavi & Iranshahr 32321 (IRAN); 53 km NE Sirjan, 1730 m, with no name of collecter 6839. Balouchestan: Zahedan to Khash, Hakimi 32303 (IRAN); Khash, ca. 1500 m, Assadi 22958; Moksoukhteh, 25 km Gasht road, 480 m, Foroughi 10825; 17 km Iranshahr, Bam road, 550 m, Foroughi 10652; 2 km SE Iranshahr, 580 m, Runemark, Assadi & Sardabi 22291; 64 km Bazman, 640 m, Runemark, Assadi & Sardabi 22593; 34 km MirJave road to Khash, Runemark, Assadi & Sardabi 22644; Iranshar to Sarbaz, around main road, Ghahreman & Mozaffarian 14056; Iranshahr to Bazman, 30 km WN Bazman, Govanz, 1500 m, Mousavi & Tehrani s. n. (IRAN); Saravan, Iranshahr 32320 (IRAN). Khorassan: SW Tabas, new road, Tabas to Yazd, 1000 m, Raafi & Zanghooei 26346 (FUHM); Dashte Lut, South of Tabas, 590 m, Leonard 32302 (IRAN). Semnan: 21 km SW Raze, 880 m, Freitag & Mozaffarian 28655; 82 km Sabzevar to Mayamey, Befor Abbas Abad, 930 m, Assadi & Maassoumi 55902; Shahrud, 8 km Ahmad Abad, near Zaman Abad, 950 m, Iranshahr s. n. (IRAN); West of Dashte Lut, 750 m, Leonard 32319 (IRAN). IRAN. JOURN. BOT. 14 (2), 2008 Saeidi Mehrvarz & Shahi Shavvon 98 Fig. 1. Cistanche flava subsp. bicolor. A) Inflorescence (scale bar = 0.5 cm); B) stem with scale leaves (scale bar = 0. 5 cm); C) bractlets (scale bar = 1 cm); D) bract (scale bar = 0. 7 cm); E) one flower with calyx (arrow indicate the lateral lobe; scale bar = 1 cm); F) Stamens and ovary (scale bar = 1 cm); G) Anthers (scale bar = 3 cm); H) Stigma (scale bar = 1 cm); I) Fruit (scale bar = 1 cm); J) longitudinal section of fruit (scale bar = 1 cm). Tehran: Ghom lake, 800 m, Jadidi 25598 a; Kavir protected region, 7 km SE Karvansaraye Shah Abbas, Wendelbo, Alla & Cobham 10905; to Ghom, around of Ghom lake, 800 m, Sangari, Tehrani, Terme & Karavar s. n. (IRAN); Kavir protected region, in Ghom lake, 750-800 m, Runemark, Foroughi & Assadi 19548; Hoze Soltan lake, Shahi & Saeidi 13242. C. flava subsp. flava: Semnan: Shahrud, to Ahmad abad, Iranshahr s. n.; Sharud, Kalat Hizomi, Shahi & Saeidi 13230. Azerbaijan, between Baku and Salijanami, Novopokrosky 899 (LE !, Type). 99 Cistanche in Iran IRAN. JOURN. BOT. 14 (2), 2008 Semnan: protected region of Turan, 3 km Chahjam to Turud, 1100 m, Freitag & Mozaffarian 28437. specimens. We are very grateful to Dr. M. Assadi for allowing us to use facilities at Research Institute of Forests and Rangelands. C. laxiflora: References C. flava subsp. bicolor: Fars: Lar, 500 m, Foroughi 1142. Khuzestan: Mahshahr, Bune Island, Tehrani & Eskandari 33506 (IRAN). Baluchestan: near coast, Tehrani & Mousavi s. n. (IRAN); Iranshahr, to Bazman, Sharif 32307/2 (IRAN). Khorassan: 70 km Neishabour to Kashmar, Assadi & Mozaffarian 35494. Tehran: Kavir protected region, Kuhsiah, Shah Abbas karvansaraye, 1100-1300 m, Rechinger 50123; Hoze Soltan lake, Shahi & Saeidi 13243; Siah kuh: Karvan-Sarai Shah Abbas, 340 44’ N, 520 10‘, 1100-1300 m, Rechinger, 50123 (B.!). Afghanistan, Harirud Valley, Aitchinson (K. !, Type). C. salsa: Azerbaijan: Jolfa-Aras, 790 m, Foroughi 5701. Esfahan: between Faridan & Esfahan, Ghahreman, Sheikholeslmi & Aghustin 8825 (TUH). Semnan: Shahru, Ahmad Abad, to Darb Ahangh, Iranshahr 32300 (IRAN). Tehran: Kvir region, 80 km NW Shah Abbasi Karvansaraye, 900 m, Wendelbo, Alla & Cobham 10847; Kavir protected regions in Ghom lake, 750-800 m, Runemark, Foroughi & Assadi 19548. Turkey, B5 Kayseri: Sultan Marshes, Oztekin 1491. Novopokrosky (LE.!, Type). C. ambigua: Semnan: Chahjam, 1100 m, Freitag & Mozaffarian 28414. Esfahan: 60 km North of Naein, 1800 m, Iranshahr 32313 (IRAN). Tehran: protected region of Kavir, Talhe, 900-1000 m, Runemark, Assadi & Foroughi 19539. Gabriel 193b (B. !, Lectotype). C. fissa: Semnan: Shahrud, Ahmad Abad, Rechinger 50654. C. ridgewayana: Guilan: 43 km Rudbar to Gilvan, 550 m, Assadi & Shah Mohammadi 60176. Kerman: Bahram Abad, near Kabutar Khan, Rechinger, Esfandiari & Aellen 32301 (IRAN). Kerman, Inter desert, near Kushkuh, Bornmuller 3907 (K. !). Baluchestan: 80 km Zahedan to Bam road, 1350 m, Assadi 22721. Semnan: Damghan, 1300-1400 m, Rechinger 52162. Tehran: Absard, Zand 13241. Afghanistan, Harirud Valley, Aitchinson (K. !, Type). Acknowledgments We are indebted to Dr. Ludwig (herbarium of Berlin, Germany) and Dr. Irina Illarionova (herbarium of st. Petresburg, Russia) for digitalized pictures of the type Agrawal, K. C. 1984: Ecological studies of Cistanche tubulosa Wight. In: C. Parker, L.J. Musselman, R.M. Polhill and A.K. Wilson (eds.). Proceedings of the 3rd International Symposium of Parasitic Weeds. -Aleppo, Syria. Pp 31-39. Blatter, E. 1921: Flora Arabia III. Records of the Botanical Survey of India 8 (3): 351. Bornmüller, J. 1936: Aus der Pflanzenwelt des inneriranischen Wüstengurtels. –Feddes Repertorium, 40 (336): 336-338. Gilli, A. 1976: Orobanchaceen der "Flora Iranica". Candollea 34: 280-305. 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