环江蛇根草 huan jiang she gen cao

Herbs, procumbent to creeping; stems to 23 cm, densely to moderately hirtellous or pilosulous, to sometimes glabrescent. Leaves in subequal pairs; petiole 0.15-1 cm, hirtellous; blade drying papery, ovate to elliptic-ovate, 0.5-1.85 × 0.3-1.2 cm, both surfaces puberulent at least on principal veins to glabrescent, base obtuse to cordulate, apex obtuse to acute; secondary veins 3 or 4 pairs; stipules caducous, not seen. Inflorescence cymose to umbelliform, 1-3-flowered, hirtellous to glabrescent; peduncle and/or pedicel 5-10 mm; bracts linear, 1-2 mm, sparsely puberulent to glabrescent. Flowers apparently distylous, pedunculate or pedicellate. Calyx puberulent to glabrous; hypanthium turbinate, 1-1.5 mm; lobes ovate to narrowly triangular, ca. 1 mm. Corolla white, funnelform, outside glabrous; tube 10-12 mm, puberulent inside; lobes ovate, 4-5 mm. Capsules unknown. Fl. Apr.

● Dense forests in valleys; ca. 400 m. Hunan (Huitong).

The protologue described the flowers as distylous and reported that only the short-styled form has been seen.