Fabaceae
Pseudoeriosema

Pseudoeriosema borianii (Schweinf.) Hauman

First published in Bull. Jard. Bot. État Bruxelles 25: 98 (1955)
This species is accepted
The native range of this species is Ethiopia to Zambia. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

Leguminosae, B. Mackinder, R. Pasquet, R. Polhill and B. Verdcourt. Flora Zambesiaca 3:5. 2001

Morphology General Habit
Perennial trailing or rarely suberect herb 30–50 cm tall or 0.3–2.4 m long.
Morphology Stem
Stems covered with whitish deflexed bristly hairs or with dense rather spreading ferruginous indumentum.
Morphology Leaves
Lowest leaves rarely 1-foliolate but majority 3-foliolate; leaflets 2.5–10 × 0.6–2.5 cm, the lateral leaflets shorter, oblong-elliptic to linear-oblong, rounded or slightly emarginate and mucronulate at the apex, cuneate at the base, sparsely bristly pubescent on both surfaces or glabrescent above and hairy beneath; venation raised beneath; petiole 0.8–4 cm long; rhachis 0.5–1 cm long; petiolules 1.5 mm long; stipules 3–6 mm long, filiform.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, subglobose to cylindrical, 6–20-flowered, sometimes with a subsessile few-flowered raceme from the same axil as the pedunculate one; rhachis 0.7–3 cm long; peduncles 0.2–5 cm long; flowers paired but primary pedicel suppressed; secondary pedicels 1–3 mm long; bracts and bracteoles small, 1.5–5 mm long, linear.
Morphology Reproductive morphology Flowers Calyx
Calyx covered with appressed bristly hairs; tube 2–3 mm long; lobes 1.5–2 mm long, narrowly triangular, the upper pair joined for one-third to half their length.
Morphology Reproductive morphology Flowers Corolla
Standard pink, red or purplish (yellow fide van Rensburg), 5–7.5 × 2.5–4.5 mm, violin-shaped or spathulate, covered with appressed silky hairs outside.
Morphology Reproductive morphology Fruits
Pod 1.4–2 cm × 6.5–7 mm, oblong, compressed, covered with long bristly sometimes ferruginous tubercular based hairs,1–2-seeded.
Morphology Reproductive morphology Seeds
Seeds very dark red-brown, 4–5 × 2.5–3 × 1–1.5 mm, oblong-ovoid; aril usually soon breaking off.
[FZ]

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]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Somalia-Masai grasslands, Lake Victoria regional transition zone; grasslands, Lake Victoria regional mosaic; bushland and thicket, Sudanian grasslands, Sudanian bushland and thicket, Zambezian grassland, Somalia-Masai bushland and thicket, Zambezi
Morphology General Habit
Perennial, Not climbing, Herb
[ILDIS]

Leguminosae, J. B. Gillett, R. M. Polhill & B. Verdcourt. Flora of Tropical East Africa. 1971

Morphology General Habit
Perennial trailing or rarely suberect herb 30–50 cm. tall or 0·3–2·4 m. long.
Morphology Stem
Stems covered with whitish deflexed bristly hairs or with dense rather spreading ferruginous indumentum.
Morphology Leaves
Lowest leaves rarely unifoliolate but majority 3-foliolate; leaflets oblong-elliptic to linear-oblong, the lateral leaflets shorter, 2·5–10 cm. long, 0·6–2·5 cm. wide, rounded or slightly emarginate and mucronulate at the apex, cuneate at the base, sparsely bristly pubescent on both surfaces or glabrescent above and hairy beneath; venation raised beneath; petiole 0·8–4 cm. long; rhachis 0·5–1 cm. long; petiolules 1·5 mm. long; stipules filiform, 3–6 mm. long.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary, subglobose to cylindrical, 6–20-flowered, sometimes with a sub-sessile few-flowered raceme from the same axil as the pedunculate one; rhachis 0·7–3 cm. long; peduncles 0·2–5 cm. long; flowers paired but primary pedicel suppressed; secondary pedicels 1–3 mm. long; bracts and bracteoles small, linear, 1·5–5 mm. long.
Morphology Reproductive morphology Flowers Calyx
Calyx covered with adpressed bristly hairs; tube 2–3 mm. long; lobes narrowly triangular, 1·5–2 mm. long, the upper pair joined for one-third to half their length.
Morphology Reproductive morphology Flowers Corolla
Standard pink, red or purplish, violin-shaped or spathulate, 5–7·5 mm. long, 2·5–4·5 mm. wide, covered with adpressed silky hairs outside.
Morphology Reproductive morphology Fruits
Pod oblong, 1·4–2 cm. long, 6·5–7 mm. wide, compressed, covered with lozng bristly sometimes ferruginous tubercle-based hairs.
Morphology Reproductive morphology Seeds
Seeds 1–2, very dark red-brown, oblong-ovoid, longest dimension 4–5 mm., shorter dimension 2·5–3 mm., 1–1·5 mm. thick; aril usually soon breaking off.
Distribution
K7 T1 T3 T4 U1 U2 U3
[FTEA]

Sources

  • Angiosperm Extinction Risk Predictions v1

    • Angiosperm Threat Predictions
    • http://creativecommons.org/licenses/by/4.0

  • Flora Zambesiaca

    • Flora Zambesiaca
    • http://creativecommons.org/licenses/by-nc-sa/3.0

  • 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/

  • International Legume Database and Information Service

    • International Legume Database and Information Service (ILDIS) V10.39 Nov 2011
    • 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

  • World Checklist of Vascular plants (WCVP)

    • 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