Perennials 5-15 cm tall. Stems ascending, subquadrangular; stem sheathed by blackish remains of old petioles. Basal leaf petiole flattened, to 1.5 cm; leaf blade 1.5-2.8 cm × 3-7 mm. Stem leaves short petiolate; leaf blade 5-10 × 3-6 mm, base obtuse, apex obtuse to rounded. Flowers terminal, solitary. Pedicel ascending, to 4.5 cm, subquadrangular. Calyx lobes slightly unequal, lanceolate to ovate-lanceolate, 6-10 mm, apex acute, midvein distinct. Corolla blue, salverform, 1.4-2.5 cm; lobes oblong to obovate-oblong, 0.8-1.5 cm, scales 2, fimbriae 2.5-3 mm, apex obtuse to rounded. Nectaries 10. Stamens inserted at middle of corolla tube; filaments white, 2-2.5 mm; anthers yellow, ellipsoid, ca. 1.2 mm. Style indistinct; stigma lobes suborbicular. Capsules ovoid-ellipsoid. Seeds brown, globose, 0.5-0.7 mm in diam.; seed coat smooth. Fl. Jun-Oct.