8. Spatholobus biauritus C. F. Wei, Bull. Bot. Res., Harbin. 5(2): 51. 1985.
双耳密花豆 shuang er mi hua dou
Climbing shrubs. Petiole 5.5-6 cm, villous; stipels subulate, as long as or slightly shorter than petiolules; petiolules ca. 4 mm, strigose; leaflets subequal, narrowly obovate or oblanceolate, 7-9.5 × 3-4 cm, papery, puberulent and strigose along veins abaxially, sparsely strigose adaxially, lateral veins 8-10 pairs, straight or arched toward margin, raised and with conspicuously reticulate veinlets on both surfaces, base narrowly cuneate, apex rounded or subtruncate, mucronate. Panicles terminal, to 30 cm; rachis elongated; branches short and dispersed; bracts ovate-triangular, ca. 2 mm, caducous, apex acuminate; bracteoles linear, ca. 1 mm. Flowers purplish red; pedicels slightly shorter than calyx. Calyx 5-5.5 mm, hairy on both sides; teeth shorter than tube, upper 2 ± connate, lower 3 ovate, apex obtuse or slightly acute. Standard orbicular, 6-7 mm in diam., apex emarginate, base cuneate, claw ca. 4 mm; wings oblong, ca. 5.5 mm, base with a rounded auricle on upper side, with an oblong auricle on lower side, claw ca. 4 mm; keel shorter than wings, ca. 4 mm, base with an obtuse long auricle, claw 3.5-4 mm. Anthers subglobose, 5 larger and 5 smaller. Ovary narrowly oblong, 3-4 mm, subsessile. Legumes not seen. Fl. Apr.
● Forests, mountain slopes; ca. 1400 m. Yunnan (Jingdong).