Euphorbiaceae
Euphorbia

Euphorbia petricola P.R.O.Bally & S.Carter

First published in Hooker's Icon. Pl. 39: t. 3856 (1982)
This species is accepted
The native range of this species is Kenya. It is a succulent subshrub and grows primarily in the desert or dry shrubland biome.

Descriptions

Extinction risk predictions for the world's flowering plants to support their conservation (2024). Bachman, S.P., Brown, M.J.M., Leão, T.C.C., Lughadha, E.N., Walker, B.E. https://nph.onlinelibrary.wiley.com/doi/full/10.1111/nph.19592

Conservation
Predicted extinction risk: threatened. Confidence: confident
[AERP]

Euphorbiaceae, A. R.-Smith. Flora of Tropical East Africa. 1987

Morphology General Habit
Succulent perennial with stems densely tufted, sparsely branched, subcylindrical, to 30(–75) cm. long and 8 mm. thick, uniformly green; branches with ± shallow teeth to 2 cm. apart in 4 longitudinal series.
Morphology General Spines
Spinescence brownish grey, black when young; spine-shields elongated to 13 mm., divergent above the spines into 2 arms to 2 mm. long with expanded ends, decurrent to 1 cm.; spines very slender, to 12 mm. long, sometimes joined at the base; prickles very fine to 5 mm. long.
Morphology Leaves
Leaves deltoid, ± 0.75 × 0.75 mm.
Morphology Reproductive morphology Inflorescences
Cymes solitary, 1-forked, with cyme-branches ± 1.25 mm. long, all parts indistincdy papillose; bracts subquadrate, ± 1.25 × 1.25 mm.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia ± 2.25 × 3.5 mm., with broadly funnel-shaped involucres; glands transversely rectangular, ± 0.75 × 1.75 mm., contiguous, yellow; lobes transversely elliptic, ± 1 × 1.5 mm.
sex Male
Male flowers:bracteoles spathulate, dentate; stamens 4 mm. long.
Morphology Reproductive morphology Flowers
Female flowers:styles 1.75 mm. long, free to the base, apices thickened. Male flowers:bracteoles spathulate, dentate; stamens 4 mm. long.
sex Female
Female flowers:styles 1.75 mm. long, free to the base, apices thickened.
Morphology Reproductive morphology Fruits
Capsule sessile, obtusely 3-lobed, ± 2.5 × 3.25 mm., minutely papillose.
Morphology Reproductive morphology Seeds
Seeds ovoid, with truncate base, 1.75 × 1.5 mm., grey, shallowly and minutely tuberculate.
Habitat
In crevices of rocky outcrops with Xerophyta and grass tufts; 500–1000 m.
Distribution
K4 K7 not known elsewhere
[FTEA]

IUCN Red List of Threatened Species https://www.iucnredlist.org/species/179713/1587781

Conservation
EN - endangered
[IUCN]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora of Tropical East Africa

    • Flora of Tropical East Africa
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/3.0/

  • IUCN Categories

    • IUCN Red List of Threatened Species
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Kew Backbone Distributions

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0

  • Kew Names and Taxonomic Backbone

    • The International Plant Names Index and World Checklist of Vascular Plants 2024. Published on the Internet at http://www.ipni.org and https://powo.science.kew.org/
    • © Copyright 2023 International Plant Names Index and World Checklist of Vascular Plants. http://creativecommons.org/licenses/by/3.0