硬毛宿苞豆 ying mao su bao dou

Amphicarpaea ferruginea Bentham in F. A. W. Miquel, Pl. Jungh. 2: 231. 1852; Pueraria ferruginea (Bentham) Kurz; P. anabaptis Kurz; Shuteria anabaptis (Kurz) C. Y. Wu; S. hirsuta Baker.

Herbs, 1-3(-4) m. Stems twining, slender, many branched, brown hirsute. Leaves pinnately 3-foliolate; stipules lanceolate, persistent; petiole 2.5-9 cm; stipels small; petiolules ca. 4 mm, hairy; leaflets ovate, 6-9 × 3.5-6 cm, membranous, both sur­faces adpressed villous, base rounded, apex acuminate. Raceme axillary, axis 5.5-16 cm; peduncle 2-3 cm, densely hairy. Bracts lanceolate, 6-8 mm, hirsute, persistent; bracteoles linear, hairy, persistent. Calyx tubular, ca. 4 mm, 5-lobed, hairy; upper 2 lobes nearly connate, triangular, ca. 1.5 mm, lower 3 lanceo­late, shorter than tube. Corolla light purple to purple, ca. 8 mm; standard obovate, without auricle, with stipe; wings linear, with auricles and stipe; keels slightly shorter than wings, auriculate. Ovary hairy. Legume oblong, compressed, slightly curved, 4.5-6 × 0.3-0.7 cm, densely hairy, apex rostrate, 5-11-seeded. Seeds dark brown. Fl. Jul-Dec, fr. Sep-Dec.

Mountains, forests, roadsides; 200-2300 m. Yunnan [Bhutan, In­dia, Laos, Myanmar, Nepal, Thailand, Vietnam].

Shuteria ferruginea is used for food. It is more widely known as S. hirsuta, but that name was published three years later than Pueraria ferruginea.