Annuals 1.5-2.5 cm tall, blackish purple. Stems erect, fastigiate branched from base, usually papillate. Petiole longer than blade, margin densely ciliolate; leaf blade spatulate, 3-5 × 2-2.5 mm, margin cartilaginous and ciliolate, apex triangular acute and apiculate, midvein distinct. Flowers many. Pedicel ca. 2 mm, densely papillate. Calyx narrowly obconic, 4-5 mm; lobes triangular, 1.3-1.5 mm, margin membranous and smooth, apex acute, midvein prominent. Corolla dark purple, with yellow-green base, tubular, 9-10 mm; lobes ovate, 1.5-2 mm, margin entire, apex obtuse; plicae oblong, 1.5-1.8 mm, margin denticulate, apex obtuse. Stamens inserted at middle of corolla tube, equal; filaments 1.5-2 mm; anthers narrowly ellipsoid, 0.7-0.9 mm. Style 0.5-1 mm; stigma lobes linear. Capsules narrowly obovoid, 3.5-4 mm; gynophore to 8 mm, stout. Seeds brown, ellipsoid, 0.6-0.8 mm. Fl. and fr. Aug.

* Grassland slopes; 3700 m. SW Sichuan.