刺柄雀儿豆 ci bing que er dou

Spongiocarpella spinosa (P. C. Li) Yakovlev.

Plants cushionlike. Stems short, 4-6 cm tall, woody at base, branched, with dense persistent spinelike petioles and stipules. Leaves 2-2.5 cm, 9-13-foliolate; stipules ovate, 2-3 mm, papery, adnate to petiole for ca. 1/2 its length, glabrous, rarely with short white hairs; axis and petiole rarely with long hairs, persistent and forming spines; leaflet blades narrowly oblong, 3-5 × ca. 1.5 mm, both surfaces with dense white short hairs when young, becoming glabrous, base rounded or slightly oblique, apex acute, rounded, or truncate, with short spines. Flowers solitary; pedicels shorter than leaves; bracts lanceolate, ca. 1.5 mm; bracteoles subulate, shorter than 1 mm. Calyx tubular, 14-16 mm, rarely with white short hairs and brown glands, gibbous at base, inflated on one side; teeth lanceolate, with glands and hard acute at apex. Corolla yellow; standard 24-26 mm, lamina suborbicular, with dense white short hairs abaxially; wings 23-25 mm, claw slightly longer than lamina; keel 19-21 mm. Ovary sessile, with dense white short hairs. Legume oblong, 2-2.5 cm × 4-5 mm, rarely with long white hairs. Fl. Jul, fr. Aug.

● On gravelly slopes of hills; 3900-4200 m. Xizang.