Fabaceae
Rhynchosia

Rhynchosia pseudoteramnoides Hauman

First published in Bull. Jard. Bot. État Bruxelles 25: 106 (1955)
This species is accepted
The native range of this species is Sudan to S. Tropical Africa. It is a climbing perennial and grows primarily in the wet tropical biome.

Descriptions

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

Morphology General Habit
Perennial climbing or trailing herb ± 1 m. long from a slender woody root-stock.
Morphology Stem
Stems shortly pubescent, the hairs usually fasciculate or pseudo-stellate.
Morphology Leaves
Leaflets 3, pale beneath, elliptic or elliptic-rhomboid, 1·1–3·6 cm. long, 0·5–2·8 cm. wide, acute at the apex, rounded at the base, adpressed puberulous with minute fasciculate or pseudostellate hairs of characteristic appearance, together with dark gland-dots on both surfaces; venation raised beneath; petiole 0·8–4·5 cm. long; rhachis 1–7 mm. long; petiolules 1–1·5 mm. long; stipules lanceolate, 4–5 mm. long, 0·8 mm. wide.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary; rhachis 3–8 cm. long; peduncle 1–4 cm. long; pedicels 1·5 mm. long; bracts deciduous, lanceolate, 2 mm. long, 0·5 mm. wide.
Morphology Reproductive morphology Flowers Calyx
Calyx densely puberulous and covered with dark gland-dots; tube 1·5 mm. long; lobes lanceolate, 2·5–4 mm. long, the lowest the longest, the upper pair joined only at the base or for ± two-thirds of their length.
Morphology Reproductive morphology Flowers Corolla
Standard yellow, obovate, 8 mm. long, 5·5 mm. wide, puberulous and glandular; wings yellow; keel pale greenish-yellow.
Morphology Reproductive morphology Fruits
Immature pods oblanceolate-oblong, falcate, ± 1·4 cm. long, 4·5 mm. wide, densely pubescent and with longer hairs and dense dark red glands.
Habitat
Grassland; 1020–1500 m.
Distribution
T4 T7 T8 U4
[FTEA]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Sudanian woodland, Lake Victoria regional transition zone; grasslands, Zambezian grassland
Morphology General Habit
Perennial, Not climbing, Herb
[ILDIS]

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]

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

Morphology General Habit
Perennial climbing or trailing herb 0.3–1 m long from a slender woody rootstock.
Morphology Stem
Stems striate, shortly pubescent, the hairs usually fasciculate or pseudostellate.
Morphology Leaves Leaflets
Leaflets 3, pale beneath, 1.1–3.6 × 0.5–2.8 cm, elliptic or elliptic-rhombic, acute at the apex, rounded at the base, appressed puberulous with minute fasciculate or pseudostellate hairs of characteristic appearance, together with dark gland dots on both surfaces; venation raised beneath; petiole 0.8–4.5 cm long; rhachis 1–7 mm long; petiolules 1–1.5 mm long; stipules 4–5 × 0.8 mm, lanceolate.
Morphology Reproductive morphology Inflorescences
Inflorescences axillary; rhachis 3–8 cm long; peduncle 1–4 cm long; pedicels 1.5 mm long; bracts deciduous, 2 × 0.5 mm, lanceolate.
Morphology Reproductive morphology Flowers Calyx
Calyx densely puberulous and covered with dark gland dots; tube 1.5 mm long; lobes 2.5–4 mm long, lanceolate, the lowest the longest, the upper pair joined only at the base or for ± two-thirds of their length.
Morphology Reproductive morphology Flowers Corolla
Standard yellow, 8 × 5.5 mm, obovate, puberulous and glandular; wings yellow; keel pale greenish-yellow.
Morphology Reproductive morphology Fruits
Immature pods c. 14 × 4.5 mm, oblanceolate-oblong, falcate, densely pubescent and with longer hairs and dense dark red glands.
Morphology Reproductive morphology Seeds
Immature seeds ellipsoid, 2 × 1.3 mm with rim aril showing signs of development.
[FZ]

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

  • 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