Fabaceae
Rhynchosia

Rhynchosia castroi Baker f.

First published in Bol. Soc. Brot., sér. 2, 8: 108 (1933)
This species is accepted
The native range of this species is S. Tropical Africa. It 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]

International Legume Database and Information Service

Conservation
Insufficiently known
Ecology
Africa: Zambezian woodland
Morphology General Habit
Perennial, Not climbing, Herb
[ILDIS]

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

Morphology General Habit
Subshrubby herb from a woody rootstock with main stems prostrate or semiscandent, ± woody, pale or darker, 3–4 mm in diameter, grooved, sparsely to densely pubescent, aromatic.
Morphology Leaves
Leafy shoots ± erect; leaflets 3, mostly subcoriaceous, 1.5–5.2 × 1–6 cm, the terminal ones broadly ovate, the laterals narrower and asymmetric, rather narrowly rounded to subacute at the apex, subtruncate at the base, rather sparsely to more densely pubescent on both surfaces; venation not impressed above, prominent and reticulate beneath; petiole 1–2.5 cm long; rhachis 7–18 mm long; stipules 8 × 3–6 mm, oblong-lanceolate to ovate, veined.
Morphology Reproductive morphology Inflorescences
Inflorescences ?erect, axillary but often appearing densely clustered, up to 20 from one point due to abbreviated young branches, often appearing before the leaves or when only just developing, 4–18 cm long, mostly many-flowered, densely hairy with hairs having yellow glandular bases; bracts 4–5 × 1.3–1.5 mm, lanceolate, persistent, remaining characteristically spaced along rhachises from which flowers and fruits have dropped.
Morphology Reproductive morphology Flowers Calyx
Calyx pubescent and with gland based hairs; tube 2 mm long; lobes 4.5–7 × 0.9–1 mm, lanceolate, acuminate.
Morphology Reproductive morphology Flowers Corolla
Standard yellow, densely striate with purple veins, 6 × 5 mm, obovate, ± emarginate, glabrous outside; claw 2 mm long; wings bright yellow or orange, 7 mm long including claw; keel pale yellow or green tipped with purple, 9 mm long including claw.
Morphology Reproductive morphology Fruits
Pod 2.3–2.7 × 0.8–1 cm, broadly oblanceolate-falcate, tipped with persistent style base, pubescent and with glandular-based hairs.
Morphology Reproductive morphology Seeds
Ripe seeds not seen, unripe reddish-brown, reniform.
[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

  • 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