Euphorbiaceae
Euphorbia

Euphorbia friesii (N.E.Br.) Bruyns

First published in Taxon 55: 412 (2006)
This species is accepted
The native range of this species is Zambia. It is a tuberous subshrub and grows primarily in the seasonally dry tropical 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: low confidence
[AERP]

Euphorbiaceae, S. Carter & L.C. Leach. Flora Zambesiaca 9:5. 2001

Morphology General Habit
Perennial herb, with a subglobose tuberous root to c. 5 cm in diameter.
Morphology Stem
Stems to 45 cm high, unbranched.
Morphology Leaves
Leaves to 9 × 6 cm, suborbicular to ovate, sometimes reddened, both surfaces scabridulous with usually numerous stiff cartilaginous hairs, margin tightly crisped and densely hairy, midrib prominent beneath; petiole c. 6 mm long; stipules c. 0.5 mm in diameter, glandular.
Morphology Reproductive morphology Inflorescences
Cymes axillary, 3–4-forked; peduncles to c. 8 cm long, cyme branches to 15 mm long, both with conspicuous scattered cartilaginous prickles 0.2–1 mm long; bracts joined in a bract-cup enveloping the cyathium, c. 10 × 16 mm, shallowly notched between rounded lobes, whitish with dark green to purplish veining and the surface with scattered cartilaginous outgrowths.
Morphology Reproductive morphology Inflorescences Cyathia
Cyathia c. 5 × 4 mm, with cup-shaped involucres; glandular rim 1.25 mm high, white; lobes 1 × 1 mm, rounded, denticulate.
sex Male
Male flowers: bracteoles few, 2 mm long; stamens 3 mm long.
Morphology Reproductive morphology Flowers
Female flower: ovary covered with cartilaginous hairs 0.2–0.5 mm long; styles 2 mm long, joined to nearly halfway, shortly bifid at the apex. Male flowers: bracteoles few, 2 mm long; stamens 3 mm long.
sex Female
Female flower: ovary covered with cartilaginous hairs 0.2–0.5 mm long; styles 2 mm long, joined to nearly halfway, shortly bifid at the apex.
Morphology Reproductive morphology Fruits
Capsule 5 × 4 mm, obtusely lobed, surface cartilaginous and wrinkled, exserted on a reflexed pedicel c. 5 mm long.
Morphology Reproductive morphology Seeds
Seeds 3 × 1.25 mm, oblong, 4-angled, minutely verrucose, pale brown; caruncle cap-like, 1 mm in diameter, stipitate, yellow.
[FZ]

Sources

  • Angiosperm Extinction Risk Predictions v1

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

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • Herbarium Catalogue Specimens

    • 'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    • Digital Image © Board of Trustees, RBG Kew http://creativecommons.org/licenses/by/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