3. Cajanus goensis Dalzell, Hooker’s J. Bot. Kew Gard. Misc. 2: 264. 1850.
硬毛虫豆 ying mao chong dou
Atylosia barbata (Bentham) Baker; A. calycina (Miquel) Kurz; A. goensis (Dalzell) Dalzell; A. siamensis Craib; Cantharospermum barbatum (Bentham) Koorders; Dunbaria barbata Bentham; D. calycina Miquel; D. stipulata Thuan; D. thorelii Gagnepain; Endomallus pellitus Gagnepain; E. spirei Gagnepain.
Vines, woody, twining, to several meters tall, yellow-brown villous except for corolla. Stems densely hairy when young, later glabrescent, to dark brown. Leaves pinnately 3-foliolate; stipules ovate-lanceolate, 7-12 mm, persistent; petiole 3-7 cm; terminal leaflet ovate to ovate-elliptic, 5-10 × 3-5.5 cm, densely villous when young, later glabrescent, base rounded, apex acuminate with hard mucro. Peduncle a few centimeters; bracts ovate, densely villous. Flowers ca. 3 cm; pedicels slender, 11-15 mm. Calyx campanulate; lobes linear-lanceolate, lowest longest, ca. 2 × as long as tube. Corolla yellow; standard obovate-elliptic, ca. 2.8 cm, base with an inflexed auricle on each side, apex slightly emarginate; wings broadly elliptic, base with auricle on one side; keels sickleform, slightly shorter than wings, clawed, without auricle. Ovary linear, densely villous; style long, curved, glabrous; stigma capitate. Legume long elliptic, 4-6 × ca. 1 cm, straight, densely villous, apex beaked. Seeds 5-7, brown, subspherical, ca. 4 mm in diam., wider than long; strophiole acute and white, succulent. Fl. Jan-Feb, fr. Feb-Jul.
Roadsides, river valleys; 1000-1300 m. Yunnan [Bangladesh, India, Indonesia, Laos, Malaysia, Myanmar, Thailand, Vietnam].