Rubiaceae
Pauridiantha

Pauridiantha bridelioides Verdc.

First published in Kew Bull. 30: 284 (1975)
This species is accepted
The native range of this species is SW. Tanzania. 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 to about 1.5–3 m. tall; stems covered with whitish hairs, later glabrescent.
Morphology Leaves
Leaf-blades elliptic, 1.2–7.3(–9.5) cm. long, 0.9–3.1(–5.3) cm. wide, obtuse to subacute at the apex, broadly cuneate to rounded at the base, usually yellow-green, mat to very glossy above, glabrous above save for a few hairs on the midnerve, glabrous beneath save for sparse hairs on the main nerves; lateral nerves 6–8 on each side, very prominent beneath, impressed above and the upper leaf-surface often very bullate; petioles 3–5 mm. long, pubescent; stipules ovate-triangular, 4–8(–10.2) mm. long, 1.5–1.8 mm. wide, pubescent.
Morphology Reproductive morphology Flowers
Flowers heterostylous, in condensed axillary (and? terminal) cymes ± 7 mm. long; peduncles almost obsolete; pedicels 0–1 mm. long; bracts ± 2 mm. long; all pubescent.
Morphology Reproductive morphology Flowers Calyx
Calyx glabrescent or pubescent; tube subglobose or campanulate, 1–1.5 mm. long; limb-tube 0.2–0.4 mm. long; lobes ovate to triangular-lanceolate, 0.9–2.5 mm. long.
Morphology Reproductive morphology Flowers Corolla
Corolla slightly pubescent outside, greenish white; tube 3.8–4.2 mm. long; lobes narrowly triangular, 1.7–3.5 mm. long, 1–1.5 mm. wide.
Morphology Reproductive morphology Flowers Androecium Stamens
Stamens exserted about 1/2 the length of corolla-lobes in short-styled flowers.
Morphology Reproductive morphology Flowers Disc
Disc depressed, glabrous.
Morphology Reproductive morphology Flowers Gynoecium Pistil
Style minutely papillate, 2.3 mm. long in short-styled flowers, 5.5 mm. in long-styled flowers; stigma subcapitate, obscurely 2-lobed in short-styled flowers, with 2 linear lobes in long-styled flowers, 0.7–0.8 mm. long.
Morphology Reproductive morphology Fruits
Berries subglobose, 5 mm. in diameter.
Morphology Reproductive morphology Seeds
Seeds yellow-brown, ellipsoid, 8–9 mm. long, 5–6 mm. wide, strongly ridged and pitted.
Habitat
Evergreen forest, riverine forest in degraded Combretum bushland, thicket; 1200–1800 m.
Distribution
not known elsewhere T4 T7
[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: 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

    • 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