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Derris trifoliata

Description from Flora of China

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 × 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 × 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].


 

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