Herbs, creeping, branched, isophyllous. Stems white villous, rooting at nodes. Petiole 5-10 mm; leaf blade ovate, 2-3 × 1.5-2 cm, both surfaces white hirsute, abaxially glaucous, adaxially green and sometimes purplish dotted, secondary veins 4 or 5 on each side of midvein, base broadly cuneate to rounded, margin sparsely crenulate, apex acuminate. Inflorescences terminal, abbreviated to headlike spikes, ca. 1 cm, densely covered with large-celled white trichomes; bracts leaflike, 1-2 cm; bracteoles linear, ca. 5 mm. Calyx 5-7 mm, 5-lobed almost to base; lobes linear-lanceolate, densely white hirsute. Corolla purplish blue to violet, 1.5-1.8 cm, outside pubescent, inside glabrous except for trichomes retaining style; tube basally cylindric and narrow then gradually widened to ca. 1.2 cm at mouth; lobes oblong, ca. 3 × 3 mm, subequal, apex rounded. Stamens 4; shorter filament pair ca. 3 mm; longer filament pair ca. 7 mm, exserted; anther thecae ca. 1.8 × 1 mm, weakly exserted; pollen type 11. Ovary pilose at tip; style ca. 1.2 cm, pilose. Capsule narrowly obovoid, 6-8 mm, 4-seeded, apex pilose. Seeds ovate in outline, ca. 2 × 2 mm, pubescent. Fl. Aug-Dec.
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