Rubiaceae
Tricalysia

Tricalysia vanroechoudtii (Lebrun ex Van Roech.) Robbr.

First published in Bull. Jard. Bot. Natl. Belg. 52: 324 (1982)
This species is accepted
The native range of this species is Uganda to Zambia. It is a shrub or tree and grows primarily in the seasonally dry tropical biome.

Descriptions

Rubiaceae, B. Verdcourt. Flora of Tropical East Africa. 1976

Morphology General Habit
Shrub 2–6 m. high; young twigs with short hairs on 2 sides.
Morphology Leaves
Leaf-blades mostly obovate, 6–14 cm. long, 2.5–6 cm. wide, shortly acuminate at apex, cuneate at base, glabrous above and beneath, coriaceous; 5–6 pairs of main lateral nerves; domatia hairy; petiole 5–10 mm. long, mostly puberulous on the adaxial side; stipules triangular, fused at the base, with awns 1–3 mm. long, puberulous, quickly becoming corky.
Morphology Reproductive morphology Flowers
Flowers 6-merous, sweet-scented, sessile; inflorescences (1–)2–3(–5)-flowered; bracts and bracteoles cupular, similar to the calyx-limb.
Morphology Reproductive morphology Flowers Calyx
Calyx-tube glabrous; limb ± dentate, at anthesis often with one longitudinal split, 2.5–5 mm. long, puberulous or rarely glabrous outside.
Morphology Reproductive morphology Flowers Corolla
Corolla white, glabrous outside and inside; tube (7.5–)10–17 mm. long, 2–5 mm. in diameter; lobes 6–7 mm. long, 3.5–4.5 mm. wide.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens subsessile; anthers 5–7 mm. long, shortly apiculate.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Placenta with 3(–5) ovules arranged in a U-shape; style glabrous, exserted, 17–24 mm. long including 2 lobes 2–3 mm. long.
Morphology Reproductive morphology Fruits
Fruit of unknown colour, ellipsoid, 12 mm. long, 7 mm. wide.
Morphology Reproductive morphology Seeds
Seeds 1–2 in each chamber, hemi-ellipsoid; testa finely striate.
Figures
Fig. 91.
Habitat
Upland rain-forest; (1200–)1500–2300 m.
Distribution
T1 U2 U4
[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

  • 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 2025. 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 2025. 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