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FOC | Family List | FOC Vol. 10 | Fabaceae | Derris

1. Derris robusta (Roxburgh ex Candolle) Bentham, J. Proc. Linn. Soc., Bot. 4(Suppl.): 104. 1860.

大鱼藤树 da yu teng shu

Dalbergia robusta Roxburgh ex Candolle, Prodr. 2: 417. 1825; Brachypterum robustum (Roxburgh ex Candolle) Dalzell & Gibson.

Trees, 10-15 m tall, deciduous. Branches slightly sparsely pubescent, glabrescent. Leaves 13-21-foliolate; rachis 10-15 cm, including petiole 1.5-4 cm; leaflet blades oblong to obo­vate, 1.5-4 × 0.9-1.5 cm, membranous, both surfaces puberu­lent or adaxially glabrous, base obliquely cuneate, apex obtuse and shortly cuspidate. Pseudoracemes axillary, elongated, 5-15 cm; rachis nodes with 2 or 3 fascicled flowers. Pedicel 4-5 mm, slender. Flowers ca. 8 mm. Calyx campanulate, 2-5 mm, out­side sericeous; teeth minute, deltoid. Corolla white; petals clawed; standard orbicular-subcordate. Ovary puberulent. Leg­ume linear-oblong, flat, 3.5-5 × 0.9-1 cm, glabrous or puber­ulent, both ends narrowed; adaxial suture with a 2-3 mm wide wing. Seeds 1-5(-10) per legume. Fl. Feb-Apr, fr. May-Jan. 2n = 22.

Mountain slopes; 300-1600 m. Yunnan [India, Laos, Myanmar, Thailand, Vietnam].


 

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