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Pakistan | Family List | Papilionaceae | Rhynchosia

Rhynchosia pulverulenta Stocks in Hook. J.Bot.Kew Misc. 4:147. 1852. Verde. in Kew Bull.25:105.1971; in Milne-Redhead & Polhill, F1.Trop. E.Afr. (Leguminosae 4) 755.1971.

  • Rhynchosia memnonia auct. non (Defile) DC. Baker
  • Rhynchosia rhombifolia Blatter & Hallb.

    Woody herb, erect or scrambling, branches velvety tomentose. Leaf trifoliolate, petiole 0.5-3.0 cm long, terminal leaflet 0.4-3.0 cm long, 0.6-4.0 cm broad, transversely elliptic to rhomboid, acute to obtuse; lateral leaflets smaller, obliquely ovate, velvety pubescent and gland dotted on both surfaces, specially on the lower side, glands yellow; stipules 2.5-4.0 mm long, pubescent. Inflorescence a 1-10-flowered lax raceme. Bracts 1.5-2.0 mm long. Pedicel c. 0.5-3.0 mm long. Calyx pubescent and gland dotted, tube 1-2 mm long, teeth subequal, 1.5-4.5 mm long. Corolla pale yellow. Vexillum 4-6.5 mm long, densely pubescent externally. Fruit 1.5-2.0 cm long, 5.5-6.0 mm broad, densely pubescent and glandular punctate, 2-seeded.

    Fl.Per.: January July.

    Holotype: Sind, near Karachi (Kurrachee), Stocks 658 (K).

    Distribution: Pakistan; India, (Rajasthan); Arabia; Socotra; South West Africa; Somali Republic; Ethiopia; Sudan; Tanganyika; Kenya.

    Recent studies conducted in Karachi (Quresh & Faruqi, Pak. J. Bot.2:65. 1970) support this arrangement. More than 500 attempts to cross Rhynchosia minima (L.) DC. and Rhynchosia pulverulenta Stocks were not successful because of the non-germination of pollen on the stigma of the other species.


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