15. Sophora wilsonii Craib in Sargent, Pl. Wilson. 2: 94. 1914.
瓦山槐 wa shan huai
Shrubs, 1-2 m high. Branches sparsely golden pubescent; branchlets densely hairy. Leaves 10-12 cm; stipules subulate, ca. 4.5 mm, persistent; leaflets 9-15; petiolule ca. 1 mm; blades elliptic, 15-25 × 7-12 mm, papery, densely brown hairy abaxially, glabrous adaxially, lateral veins obscure, base cuneate, apex obtuse, mucronate. Racemes alternate with leaves. Bracts subulate, 2-3 mm, caducous. Calyx campanulate, obviously oblique, 6-7 mm; teeth 5. Corolla white or pale yellow; standard linear-obovate, ca. 15 × 5 mm, apex retuse; wings oblong, equal to standard in length, claw ca. equal to petal; keel similar to wings, shorter, 1-auriculate. Stamens 10, slightly fused at base, sparsely hairy at fused parts. Ovary sparsely hairy; style and stigma glabrous. Legumes dark brown, terete, 7.5-8.5 × 1-1.2 cm, rigid, sparsely pubescent, base slender necked, apex beaked. Seed 1, dark brown, large, oblong, ca. 13 mm, obtuse at both ends. Fl. and fr. May-Oct.
● Valley scrub; 500-1700 m. Gansu, Guizhou, Sichuan, Yunnan.