败酱耳草 bai jiang er cao

Oldenlandia capituligera (Hance) Kuntze.

Leggy herbs, erect, to 80 cm tall; stems terete to 4-angled, longitudinally usually sulcate, sparsely villosulous or hirtellous to densely so at least in longitudinal lines, becoming glabrescent. Leaves subsessile to shortly petiolate; blade drying membranous, oblong-lanceolate, 3.5-11.5 × 0.8-3.5 cm, adaxially glabrous or sparsely to densely puberulent, hirtellous, or hispid, abaxially glabrescent on lamina and hispid to pilosulous or pilose along veins, base acute to rounded, margins ciliolate, apex obtuse to acute; secondary veins 5-8 pairs; stipules fused to petiole bases, triangular, 1.5-4 mm, moderately to densely hirtellous or villosulous, with 2-4 bristles or linear to narrowly triangular lobes 1.5-4 mm. Inflorescences terminal on main stems, short lateral stems, and sometimes also in axils of uppermost leaves, several to many flowered, with 1-8 congested-cymose to subcapitate heads or glomerules, these usually in compound cymes 2-18 cm, densely villosulous to strigillose or glabrescent, pedunculate; peduncles 1-10 cm; heads 0.8-1.5 cm in diam.; bracts narrowly triangular to narrowly elliptic, 1.2-7 mm. Flowers subsessile. Calyx glabrous; hypanthium portion subglobose, ca. 0.8 mm; limb lobed nearly to base; lobes triangular, 0.3-0.6 mm. Corolla white, funnelform, outside glabrous; tube ca. 3 mm, stiffly barbate in throat; lobes ca. 1.3 mm, thickened at apex. Fruit capsular, compressed globose, dehiscent; seeds several. Fl. Jul-Aug.

● Open grasslands. Guangdong, Guizhou, Yunnan.