吴氏蛇根草 wu shi she gen cao

Herbs, procumbent at base, ascending above, to 30 cm tall; stems drying reddish brown, subterete to striate-grooved, puberulent to densely pilosulous. Leaves in subequal pairs; petiole 1-2.5 cm, pilosulous; blade drying thinly papery, ovate or lanceolate-ovate, 5-11 × 1.8-4 cm, adaxially glabrous or sparsely strigillose, abaxially villosulous or hirtellous along veins, base cuneate then shortly decurrent, apex obtuse then abruptly acuminate; secondary veins 5-7 pairs; stipules subfiliform, ca. 6 mm. Inflorescences cymose, several flowered, branched to several orders, on peduncles and axes with 2 pilosulous or strigillose lines; peduncle 1-2.5 cm; axes helicoid; bracts absent or reduced. Flowers with biology unknown, subsessile. Calyx with hypanthium ca. 1.5 mm; lobes ca. 0.4 mm. Corolla white or reddish, tubular, glabrous outside; tube 4.5-5 mm, densely pubescent in throat; lobes oblong-triangular, ca. 2 mm, dorsally winged, markedly reflexed in anthesis. Capsules unknown. Fl. Apr.

● On wet limestone; ca. 1100 m. Yunnan (Luxi).