琼豆 qiong dou

Glycine koordersii Backer ex Koorders-Schumacher, Syst. Verz. 1(Fam. 128): 59. 1911.

Herbs, twining. Stems striate. Petiole 4-6 cm, grooved, stri­gose, glabrescent; stipels subulate; petiolule 3-4 mm, hirsute; leaflets papery, green or yellowish green after drying, terminal leaflet ovate, 6-14 × 2.5-7 cm, lateral leaflets smaller, obliquely ovate, 6-9 cm, tapering or acute at apex, often rounded at base, both surfaces glabrous or sparsely appressed hirsute, lateral veins 3 or 4 pairs. Racemes axillary; peduncle 5-18 cm, angu­late, retrorsely strigose. Flowers 5-20, congested; bracts lanceo­late, 3-4 mm, crested; pedicel 1-2 mm, glabrescent, sometimes inflated at tip; bracteoles subulate, 2.5-3.5 mm, strigose. Calyx longitudinally striate, 5-5.5 mm; teeth narrowly lanceolate, equal to calyx tube or slightly longer, glabrous. Corolla white, 6-7 mm; wings and keel slightly purple at tip, not auriculate. Legumes linear, 3-3.5 cm × 3-4 mm, segments thinly leathery, appressed hirsute. Seeds brown, nearly square, ca. 3 mm long and wide, with short strophiole, scarious and ligulate. Fl. Nov-Dec.

Shrublands, open forests. Hainan [Indonesia (Java)].