Fabaceae
Rhynchosia

Rhynchosia orthobotrya Harms

First published in Bot. Jahrb. Syst. 54: 390 (1917)
This species is accepted
The native range of this species is W. Tropical Africa to Eritrea and Tanzania. It is a perennial and grows primarily in the seasonally dry tropical biome.

Descriptions

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

Morphology General Habit
Perennial sticky erect herb or undershrub 0·6–1·35 m. tall, more rarely a twiner 0·9–1·5 m. long.
Morphology Stem
Stem pubescent and also with longer glandular-based hairs.
Morphology Leaves
Leaflets 3, oblate or ovate, the laterals oblique, 1·6–8 cm. long, 1·5–7·4 cm. wide, acute or acuminate at the apex, rounded or cordate at the base, pubescent and with scattered longer glandular-based hairs on both surfaces; petiole 1–5·8 cm. long; rhachis 1·1–1·8 cm. long; petiolules 2–3 mm. long; stipules ovate-triangular, 1–1·2 cm. long, 2·5–6 mm. wide, veined, hairy.
Morphology Reproductive morphology Inflorescences
Inflorescences fairly dense, axillary and terminal; rhachis 4·5–18 cm. long; peduncle 0·5–7 cm. long; pedicels 1 mm. long; bracts deciduous, ovate-lanceolate, 5–7 mm. long, 1·8–2·5 mm. wide, pubescent.
Morphology Reproductive morphology Flowers Calyx
Calyx pubescent and glandular; tube 2–3 mm. long; lowest lobe longest and conspicuously wider than the rest, elliptic-lanceolate, 6–11 mm. long, 3–4 mm. wide; lateral lobes lanceolate, 3–6 mm. long, 1–2 mm. wide; 2 upper lobes joined for ± half their length.
Morphology Reproductive morphology Flowers Corolla
Standard orange-yellow usually veined with purple, obovate, 0·9–1·1 cm. long, 6 mm. wide, pubescent.
Morphology Reproductive morphology Fruits
Pods oblong, 2·5–3 cm. long, 8–9 mm. wide, narrowed at the base, aristate, covered with rather, well-spaced long yellow glandular-based hairs and also with short hairs.
Morphology Reproductive morphology Seeds
Seeds black, rounded-reniform, longest dimension 4·5 mm., shorter dimension 3·5 mm., 2 mm. thick.
Figures
Fig. 109/15, p. 716.
Habitat
Grassland, woodland or bushland, often on rocky hill-tops; 990–2100 m.
Distribution
K2 K3 K5 T1 T2 U1 U2 U3 U4
[FTEA]

International Legume Database and Information Service

Conservation
Not Threatened
Ecology
Africa: Sudanian grasslands, Lake Victoria regional transition zone; grasslands, Lake Victoria regional mosaic; bushland and thicket, Lake Victoria regional transition zone; woodland., Somalia-Masai wooded grasslands., Somalia-Masai bushland and thicket,
Morphology General Habit
Perennial, Climbing/Not climbing, Herb
[ILDIS]

Papilionaceae, Hutchinson and Dalziel. Flora of West Tropical Africa 1:2. 1958

Morphology General Habit
Erect or suberect perennial
Morphology Reproductive morphology Inflorescences
Erect unbranched racemes of pale yellow flowers
Morphology Reproductive morphology Fruits
Fruits glandular-pilose.
[FWTA]

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

  • Flora of West Tropical Africa

    • Flora of West Tropical 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