Annuals 1.5-3.5 cm tall. Stems ascending to erect, branched from base, glabrous. Leaves widely spaced; petiole 2-3 mm; leaf blade lanceolate, ovate-lanceolate, or ovate, 2-9 × 0.5-2.5 mm, shorter to slightly longer than internodes, margin narrowly membranous, apex acute to obtuse, midvein abaxially distinct. Flowers sessile. Calyx 1.4-1.6 cm, tubular; lobes triangular, 3-4 mm, margin narrowly membranous and smooth, apex acute, midvein strongly keeled and decurrent into conspicuous wings of calyx tube. Corolla purple, salverform; tube 2-2.5 cm, narrow; limb to 5 mm in diam.; lobes ovate-elliptic to ovate, 4-5 mm, margin entire, apex obtuse; plicae ovate, 1-3.5 mm, margin serrulate, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 2-3 mm; anthers narrowly ellipsoid, 1.5-2.5 mm. Style 2.5-3 mm; stigma lobes semiorbicular. Capsules narrowly ellipsoid; gynophore ca. 6 mm. Fl. and fr. Aug-Sep.

High mountain; 4000-6000 m. SE Xizang [Bhutan, NW India, Nepal]