Euphorbiaceae
Pycnocoma

Pycnocoma chevalieri Beille

First published in Mém. Soc. Bot. France 8: 81 (1908)
This species is accepted
The native range of this species is Congo to N. Uganda. It is a shrub and grows primarily in the wet tropical biome.

Descriptions

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

Morphology General Habit
An undershrub 1–3 m. tall.
Morphology General Shoots
Young shoots glabrous.
Morphology Leaves
Leaves crowded towards the ends of the branches; petiole 3–8 cm. long, narrowly winged, glabrous; leaf-blade elliptic-lanceolate, (15–)20–30 cm. long, (5.5–)7–9 cm. wide, acutely gradually acuminate, attenuate to the acute base and continuous with the petiolar wings, entire firmly chartaceous, lateral nerves 11–14 pairs, looped well within the margin, midrib and lateral nerves scarcely prominent above, prominent beneath, tertiary nerve network slightly prominent above and beneath, quite glabrous.
Morphology Leaves Stipules
Stipules 0.
Morphology Reproductive morphology Inflorescences
Raceme laxly flowered, pedunculate, up to 10 cm. long; axis evenly to densely pubescent pilose; ♂ bracts not reflexed, broadly ovate, concave, 3 mm. long, 3 mm. wide, entire sericeous-pubescent without, glabrous within, 1–2(–3)-flowered.
Morphology Reproductive morphology Flowers
Male flowers:pedicels up to 2 cm. long, densely pubescent-pilose; sepals 4, ovate, 3–4 mm. long, 3 mm. wide, subacute or obtuse, sparingly pubescent without, ± glabrous within, cream-white; disc-gland mass ± glabrous; stamens 30–40, 8 mm. long, the filaments cream white, anthers 0.5 mm. long. Female flowers:sepals 5, ovate-lanceolate, 4 mm. long 1.5 mm. wide, acute, pubescent without, glabrous within; ovary trilobate, 2 mm. long 2.5 mm. diameter, each lobe with two deltoid dorsal horns, velvety-pubescent; style united only at the base or ± free, 7–8 mm. long, densely pubescent.
sex Male
Male flowers:pedicels up to 2 cm. long, densely pubescent-pilose; sepals 4, ovate, 3–4 mm. long, 3 mm. wide, subacute or obtuse, sparingly pubescent without, ± glabrous within, cream-white; disc-gland mass ± glabrous; stamens 30–40, 8 mm. long, the filaments cream white, anthers 0.5 mm. long.
sex Female
Female flowers:sepals 5, ovate-lanceolate, 4 mm. long 1.5 mm. wide, acute, pubescent without, glabrous within; ovary trilobate, 2 mm. long 2.5 mm. diameter, each lobe with two deltoid dorsal horns, velvety-pubescent; style united only at the base or ± free, 7–8 mm. long, densely pubescent.
Morphology Reproductive morphology Fruits
Fruits triloba, 6-horned, 0.8–1 cm. long, 1.2–1.5 cm. diameter, densely velutinous-tomentose.
Morphology Reproductive morphology Seeds
Seed spherical, 6 mm. diameter, brown.
Habitat
Understorey shrub in forest; ± 1000 m.
Distribution
U1
[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

  • 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