Vasilis Teodoridis:
Fabaceae | Derris
5. Derris trifoliata Loureiro; Fl. Cochinch. 2: 433. 1790.
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Derris uliginosa (Roxburgh ex Willdenow) Bentham; Robinia uliginosa Roxburgh ex Willdenow.
Lianas; glabrous. Leaves (3 or)5(or 7)-foliolate; rachis 7-15 cm; including petiole 5-9 cm; leaflet blades ovate-oblong; 5-10 x 2-4 cm; firmly papery to subleathery; base rounded to slightly cordate; apex obtusely acuminate. Pseudoracemes axillary; 5-10 cm; rachis nodes with 2 or 3(-6) fascicled flowers sometimes borne on a short branchlet. Pedicel 2-4 mm. Flowers ca. 1.2 cm. Calyx campanulate; ca. 2 mm; glabrous or subglabrous; teeth very short; obtuse. Corolla whitish to pink; ca. 1 cm; standard suborbicular. Ovary sparsely pubescent. Legume obliquely ovoid; globose; or oblong; 2.5-4 x 2-3 cm; compressed; glabrous; adaxial suture with a narrow wing. Seeds 1 or 2 per legume. Fl. Apr-Aug; fr. Aug-Dec. 2n = 22.
Coastal areas along beaches or riverbanks; thickets; forests; below 1000 m. Fujian; Guangdong; Guangxi; Hainan; Taiwan [Cambodia; India; Indonesia; Japan; Malaysia; Papua New Guinea; Sri Lanka; Thailand; Vietnam; E Africa; Australia; Pacific islands].