Bonnaya pumila (D. Don) Sprengel; Chirita flava R. Brown; C. sphagnicola H. Léveillé & Vaniot; Didymocarpus anthonyanus Handel-Mazzetti; Henckelia pumila (D. Don) A. Dietrich; Roettlera pumila (D. Don) Kuntze.

Annuals, not rhizomatous. Stems erect, 6-46 cm, pubescent to sparsely pilose. Stem leaves 4-8, opposite, widely spaced; petiole 4-12(-28) X 1-2 mm; leaf blade oblique, lanceolate to ovate or elliptic, 2-17 X 1.2-5.5(-8) cm, herbaceous, puberulent to pilose, eglandular, abaxially purple spotted, base oblique, cuneate to cordate, margin denticulate to serrulate, apex acute to acuminate; lateral veins 6-9 on each side of midrib, conspicuous. Cymes (1 or)2-7-flowered; peduncle 2.8-10 cm, puberulent to sparsely pilose or glabrescent; bracts 2, free, ovate to lanceolate or obovate, 5-18 X 1-4 cm, pubescent, margin entire to shallowly denticulate, apex acute. Pedicel 3-20 mm, glabrous to puberulent or pilose. Calyx 0.9-1.8 cm, 5-lobed from below to above middle; tube 4-10 mm; lobes slightly unequal, narrowly triangular to ovate, 4-10 X ca. 2 mm, outside pubescent to sparsely pilose, inside glabrous, margin entire, apex subulate-acuminate, hornlike, spreading. Corolla white to purple with yellow or purple markings, 3.2-5.7 cm, outside puberulent to pilose, inside glabrous to sparsely pubescent adaxially; tube narrowly funnelform, 2.5-4.5 X 0.8-1.5 cm; adaxial lip 4-10 mm; abaxial lip 0.6-1.5 cm. Filaments 0.8-1.3 cm, sparsely puberulent to glabrous; anthers fused by entire adaxial surfaces, 3-4 mm, glabrous; staminodes 2, 2.5-4(-10) mm. Pistil 2.5-3.8 cm, glabrous to puberulent; ovary 1.4-2.8 cm. Stigma flabellate, ca. 3 mm, 2-lobed. Capsule erect, 6-12 cm. Fl. Jul-Sep, fr. Jul-Oct.

Forests, streamsides, rocks, cliffs, or among grassy clumps; 800-2800 m. NW Guangxi, SW Guizhou, SE Xizang, NW and S Yunnan [Bhutan, N and NE India, Myanmar, Nepal, Sikkim, Thailand, N Vietnam].