Apocynaceae
Oncinotis

Oncinotis glabrata (Baill.) Stapf ex Hiern

First published in Cat. Afr. Pl. 1: 674 (1898)
This species is accepted
The native range of this species is W. Tropical Africa to Uganda and N. Angola. It is a liana and grows primarily in the wet tropical biome.

Descriptions

Apocynaceae, H. Huber. Flora of West Tropical Africa 2. 1963

Morphology General Habit
A glabrous woody climber.
[FWTA]

Apocynaceae, E.A. Omino. Flora of Tropical East Africa. 2002

Morphology General Habit
Climbing shrub or liana 1.2–40 m high; trunk 1.5–12 cm in diameter; bark greyish brown, with large pale brown lenticels; branchlets brownish green to grey, glabrous or rarely puberulous.
Morphology Leaves
Leaves petiolate; blade elliptic to ovate (to obovate), 3.9–13 cm long, 1.5–5 cm wide, acuminate (or rounded or emarginate) at the apex, cuneate at the base, glabrous (rarely puberulous on midrib and veins), glossy, dark to medium green above, with 5–12 pairs of secondary veins forming an angle of 50–75°, tertiary venation reticulate to faintly scalariform; domatia of pits, sometimes absent, sometimes with a ciliate margin; petiole 7–24 mm long, glabrous, rarely puberulous, with 1–3 clusters of 2–3 glands on the adaxial side.
Morphology Reproductive morphology Inflorescences
Inflorescence (2.5–)4–12.5 cm long, rusty brown-pubescent and glabrescent in all parts; bracts ovate to triangular, 1.2–1.7 mm long; pedicels 2–5 mm long.
Morphology Reproductive morphology Flowers
Flowers with sepals ovate, 1.5–3.6 mm long, rusty brown-pubescent; corolla yellow; tube urceolate, 2.5–4.7 mm long; lobes triangular, 2.3–5.8 mm long, 0.9–2.5 mm wide, glabrous or puberulous outside; corona later turning white, 0.5–0.9 mm long, pubescent at the base; pistil 2.9–3.5 mm long; style 0.1–0.2 mm long; ovules 60–120.
Morphology Reproductive morphology Fruits
Fruits fusiform, 9.8–30 cm long, 1.2–6.1 cm wide, exocarp 1–8 mm thick, very hard, longitudinally winged at maturity, wing undulate, 0.1–3 mm wide, puberulous to glabrescent; seeds numerous, 5–27×2–6.5 mm; coma 10–75 mm long.
Habitat
Moist forest, riverine forest, secondary bushland; 1100–1800 m
Distribution
T4 U4 tropical Africa from Guinea to Central African Republic and S from to Congo (Kinshasa), Burundi and Angola
[FTEA]

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: not threatened. Confidence: confident
[AERP]

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

  • Flora of West Tropical Africa

    • Flora of West Tropical Africa
    • 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 2026. 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 2026. 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