Perennials 10-15 cm tall. Stems erect, simple, glabrous. Basal rosette leaves poorly developed; leaf blade triangular, 3-7 × 1-1.5 mm, membranous, margin weakly hispid, apex acute, midvein distinct. Stem leaves in whorls of 3 or 4, middle leaves larger than lower or upper leaves, uppermost leaves surrounding calyx; leaf blade linear-lanceolate, 1-1.5 cm × 1.5-3 mm, base connate for 2-3 mm, margin smooth and slightly revolute, midvein abaxially distinct. Flowers terminal, solitary, sessile, 6-8merous. Calyx tube campanulate, 6-8 mm, membranous; lobes narrowly elliptic, 3.5-4.5 mm, herbaceous, base narrowed, margin smooth and slightly revolute, apex obtuse, midvein distinct. Corolla blue, tubular-campanulate, 2.5-4.2 mm; lobes ovate, 2.5-3 mm, margin erose, apex obtuse; plicae narrowly triangular, as long as lobes, margin erose, apex obtuse. Stamens inserted at basal part of corolla tube; filaments 8-10 mm; anthers ellipsoid, 1.5-2 mm. Ovary narrowly obovoid, ca. 1 cm; gynophore ca. 5 mm. Style ca. 4 mm; stigma lobes narrowly oblong. Capsules ellipsoid; gynophore short. Seeds fusiform.

Grassland slopes. Taiwan [Japan].