短茎淫羊藿 duan jing yin yang huo

Herbs, ca. 23 cm tall. Rhizome short, compact, clump-forming. Leaves basal and cauline, trifoliolate; leaflets adaxially deep green, ovate or narrowly ovate, 6-10 × ca. 3.5 cm, leathery, abaxially glabrous except for hairy thickened insertion of secondary petiole, adaxially glabrous, base deeply cordate, base of terminal leaflet with equal rounded lobes, those of lateral leaflets unequal with outer lobe large, deltoid, and acute, inner lobe smaller and rounded, margin closely spinulose subserrulate, apex acuminate. Flowering stem with 1 leaf. Inflorescence simple, racemose, loosely few flowered (6-12-flowered), ca. 14 cm. Pedicel ca. 2 cm, sparsely glandular pubescent. Flowers large, ca. 4 cm in diam. Outer sepals obovate, 3.5-4 mm, apically obtuse; inner sepals pale rose, lanceolate, 20-22 × ca. 6 mm. Petals basally rose, elsewhere white, slightly longer than inner sepals; spur strongly curved, elongate, 2.2-2.6 cm, nearly lamina-less. Stamens prolonged, ca. 4 mm; filaments whitish, ca. 1 mm, slender; anthers yellow, valved. Pistil ca. 6 mm; style ca. 2.5 mm; stigma ruminate. Fl. Apr-May, fr. unknown.

● Forests on slopes; 600-1200 m. Guizhou (Fanjing Shan).