1. Family: Fabaceae Lindl.
    1. Genus: Rhynchosia Lour.
      1. Rhynchosia elegans A.Rich.

        This species is accepted, and its native range is Eritrea to Malawi, SW. Arabian Peninsula.

    [ILDIS]

    International Legume Database and Information Service

    Conservation
    Not Threatened
    Ecology
    Africa: Zambezian woodland, Sudanian bushland and thicket, Somalia-Masai bushland and thicket
    Habit
    Perennial, Climbing, Herb
    [FTEA]

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

    Habit
    Perennial climbing herb 1–2·5 m. long from a woody rootstock.
    Stem
    Stems glabrescent to mostly rather densely covered with adpressed white hairs, particularly on the ridges, and with numerous reddish gland-dots.
    Leaves
    Leaflets 3, ovate or rhomboid, the laterals oblique, 1·2–8 cm. long, 0·9–6·5 cm. wide, subacute to acuminate, rounded, truncate, cuneate or slightly subcordate at the base, pubescent or glabrescent and gland-dotted above, pubescent to densely velvety (particularly on the venation) and with dense yellow to red gland-dots beneath; venation rather prominent and reticulate beneath; petiole 0·9–6·5 cm. long; rhachis 0·9–1·7 cm. long; petiolules 0·5–3 mm. long; stipules oblong to ovate-lanceolate, sometimes conspicuous, 0·35–1·3 cm. long, 2·5–6 mm. wide, acuminate, subcordate or truncate, veined, pubescent.
    Inflorescences
    Inflorescences axillary, lax, the flowers mostly paired along the rhachis, which is glandular hairy, 3–14 cm. long; peduncle ± 6–5 cm. long; pedicels 0·4–1·9 cm. long, glandular hairy; bracts deciduous, ovate to lanceolate, 0·6–1·5 cm. long, 2–8 mm. wide, acuminate, pubescent, the young inflorescences sometimes appearing comose.
    Calyx
    Calyx pubescent and glandular; tube 3–4 mm. long; lobes mostly linear, 0·55–1·7 cm. long, the lowest longest and widest, the upper pair joined for ± one-quarter to one-third of their length.
    Corolla
    Standard yellow, densely veined with dark purple or crimson outside, elliptic, 1·3–2·1 cm. long, 0·8–1·2 cm. wide; wings yellow; keel white or yellowish, with purple veins inside at the tip which coalesce to form a purple flush.
    Fruits
    Pods yellowish-green when young with distinctive darker green reticulation, later brown, narrowly elliptic-oblong, 3–3·8 cm. long, 6–8 mm. wide, apiculate, densely covered with viscid glandular hairs and also with shorter hairs and gland-dots.
    Seeds
    Seeds chestnut with darker mottling, elliptic-reniform, longest dimension 5·5 mm., shorter dimension 4 mm.
    [FZ]

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

    Habit
    Perennial climbing herb 1–2.5 m long from a woody rootstock.
    Stem
    Stems glabrescent to mostly rather densely covered with appressed white hairs, particularly on the ridges and with numerous reddish gland dots.
    Leaflets
    Leaflets 3, 1.2–8 × 0.9–6.5 cm, ovate or rhombic, the laterals oblique, subacute to acuminate, rounded, truncate, cuneate or slightly subcordate at the base, pubescent or glabrescent and gland-dotted above, pubescent to densely velvety (particularly on the venation) and with dense yellow to red gland dots beneath, rarely almost glabrous; venation rather prominent and reticulate beneath; petiole 0.9–6.5 cm long; rhachis 0.9–1.7 cm long; petiolules 0.5–3 mm long; stipules 3.5–13 × 2.5–6 mm, oblong to ovate-lanceolate, sometimes conspicuous, acuminate, subcordate or truncate, veined, pubescent.
    Inflorescences
    Inflorescences axillary, lax, the flowers mostly paired along the rhachis, which is glandular-hairy, 3–14 cm long; peduncle c. 6.5 cm long; pedicels 4–19 mm long, glandular-hairy; bracts deciduous, 6–15 × 2–8 mm, ovate to lanceolate, acuminate, pubescent, the young inflorescences sometimes appearing comose.
    Calyx
    Calyx pubescent and glandular; tube 3–4 mm long; lobes 5.5–17 mm long, mostly linear, the lowest longest and widest, the upper pair joined for ± one-quarter to one-third of their length.
    Corolla
    Standard yellow, densely veined with dark purple or crimson outside, 13–21 × 8–12 mm, elliptic, glabrous; wings yellow; keel white or yellowish, with purple veins inside at the tip which coalesce to form a purple flush.
    Fruits
    Pods yellowish-green when young with distinctive darker green reticulation, later brown, 30–38 × 6–8 mm, narrowly elliptic-oblong, apiculate, densely covered with viscid glandular hairs and also with shorter hairs and gland dots.
    Seeds
    Seeds chestnut-brown with darker mottling, 5.5 × 4 mm, elliptic-reniform.

    Images

    Distribution

    Native to:

    Eritrea, Ethiopia, Kenya, Malawi, Somalia, Sudan, Tanzania, Uganda, Yemen, Zaïre

    Rhynchosia elegans A.Rich. appears in other Kew resources:

    Date Reference Identified As Barcode Type Status
    Richards [386] K000263688
    Schimper [518], Ethiopia K000263689
    Schimper [88], Ethiopia K000263690 Unknown type material
    Gillett, J.B. [4850], Somalia Rhynchosia buramensis K000263738 Unknown type material

    First published in Tent. Fl. Abyss. 1: 228 (1847)

    Accepted by

    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Thulin, M. (ed.) (1993). Flora of Somalia 1: 1-493. The Royal Botanic Gardens, Kew.
    • Hedberg, I. & Edwards, S. (eds.) (1989 publ. 1990). Flora of Ethiopia and Eritrea 3: 1-659. The National Herbarium, Addis Ababa University, Ethiopia & The Department of Systematic Botany, Upps.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.

    Literature

    Kew Backbone Distributions
    • Darbyshire, I., Kordofani, M., Farag, I., Candiga, R. & Pickering, H. (eds.) (2015). The Plants of Sudan and South Sudan: 1-400. Kew publishing, Royal Botanic Gardens, Kew.
    • Wood, J.R.I. (1997). A handbook of the Yemen Flora: 1-434. Royal Botanic Gardens, Kew.
    • Lock, J.M. (1989). Legumes of Africa a check-list: 1-619. Royal Botanic Gardens, Kew.
    Flora of Tropical East Africa
    • Hauman in Flore du Congo Belge et du Ruanda-Urundi, 6: 161 (1954).
    • Bak. f., Leguminosae of Tropical Africa: 477 (1929).
    • Bak. in Flora of Tropical Africa 2: 221 (1871).
    • A. Rich., Tent. Fl. Abyss. 1: 228 (1847).
    International Legume Database and Information Service
    • Gillett, J. B. et al. (1971). Papilionoideae. In: Fl. Trop. E. Africa, Milne-Redhead & Polhill

    Sources

    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
    'The Herbarium Catalogue, Royal Botanic Gardens, Kew. Published on the Internet http://www.kew.org/herbcat [accessed on Day Month Year]'. Please enter the date on which you consulted the system.
    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 Backbone Distributions
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0

    Kew Names and Taxonomic Backbone
    The International Plant Names Index and World Checklist of Selected Plant Families 2019. Published on the Internet at http://www.ipni.org and http://apps.kew.org/wcsp/
    © Copyright 2017 International Plant Names Index and World Checklist of Selected Plant Families. http://creativecommons.org/licenses/by/3.0