Apocynaceae
Oncinotis

Oncinotis hirta Oliv.

First published in Hooker's Icon. Pl. 13: t. 1232 (1877)
This species is accepted
The native range of this species is W. Central Tropical Africa to Uganda and N. Angola. It is a liana and grows primarily in the wet 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: not threatened. Confidence: confident
[AERP]

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

Morphology General Habit
Climbing shrub or liana 3–25 m high; trunk 1–6 cm in diameter; bark greyish brown, ± rough; branches greyish brown, with many large pale brown lenticels; branchlets densely reddish brown-pubescent.
Morphology Leaves
Leaves petiolate; blade elliptic-oblong to obovate, 4–13.5 cm long, 2–6.8 cm wide, acuminate, exceptionally emarginate at the apex, rounded or cuneate at the base, with varioulsy branched hairs; domatia absent or very inconspicuous; petiole 4–12(–22) mm long, densely covered with variously branched hairs, with 1–15 glands on the adaxial side and 2(–8) glands at the base of the blade.
Morphology Reproductive morphology Inflorescences
Inflorescence 3–11 cm long, with very dense rusty brown tomentum in all parts; bracts up to 1.4 mm long; pedicels 1–2.5 mm long.
Morphology Reproductive morphology Flowers
Flowers with sepals ovate, 1.2–2.6 mm long, with dense rusty brown tomentum; corolla tube yellow to greenish yellow, urceolate, 2.7–3 mm long; lobes yellow to greenish yellow, ovate to triangular, 2.3–2.8 mm long, 0.8–1.2 mm wide, densely pubescent outside; corona yellowish later turning white, 0.2–0.5 mm long, glabrous, puberulous at the base; stamens inserted 0.6–0.8 mm from the base of the tube; pistil 1.9–2.5 mm long; style 0.1–0.2 mm long; ovules 15–30 in each carpel.
Morphology Reproductive morphology Fruits
Fruits narrowly cylindrical, 6.3–24 cm long, 0.4–1 cm in diameter, covered with dense, up to 2.5 mm long deciduous rusty brown or grey tomentum; seeds up to 25 in each follicle; seed 9.5–19 mm long; coma 21–45 mm long.
Habitat
Moist forest or forest margin; 1100–1200 m
Distribution
U4
[FTEA]

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

    • '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