Herbs perennial, erect, stoloniferous, 7-12 cm tall. Branches trailing, rooting at nodes, brownish villous/pilose. Petiole 2-4(-5) cm; leaf blade circular to elliptic-circular, 2-2.5 × 1.8-2.4 cm, sparsely strigose, densely so on abaxial veins, basal blades purplish, base cordate to subtruncate, margin irregularly crenate, ciliate, apex rounded to obtuse. Floral leaves similar to stem leaves. Flowers solitary. Pedicel 3-4 mm. Calyx campanulate, ca. 5 mm, slightly swollen; teeth ovate-lanceolate, 1/2 or more as long as calyx, posterior tooth slightly shorter and somewhat obtuse, ciliate. Corolla purple or reddish purple, tubular, straight, 1.3-1.5 cm, pubescent, not hairy annulate inside; upper lip erect, semicircular, emarginate; lower lip with middle lobe flabellate, 2-lobed, lateral lobes oblong-lanceolate. Nutlets ca. 2 mm, netted on back, with an areole to 4/5 of nutlet length. Fl. Apr-May, fr. May-Jul.
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