Herb or subshrub very softly woody at base, ± pubescent. Stems creeping and rooting at base; branches ascending to erect; branchlets few, pilose to glab., up to ± 3 dm. tall. Lvs opp., distant, on slender petioles up to c. 2 cm. long. Lamina 4-5-(12) × 2-4-(6) mm., ovate to ovate-oblong to suborbicular, 3-5-lobed to toothed or entire. Fls solitary, axillary, on peduncles c. 2-3 mm. long. Calyx minutely pubescent; lips rounded, scale enlarging in fr. Corolla pubescent, white, ± 6-8 mm. long, lobes obtuse.

n = 30

Puberulent or glabrate perennial herb. Main stems ± creeping, almost woody at base, often dark, with the few to many branches spreading or sometimes erect. Lf pairs distant; petioles 0.2-1-(2) cm long, very slender, dark. Lamina 3-10-(13) × 2-10-(16) mm, ovate to suborbicular or ± reniform, membranous, entire or 3-5-toothed or lobed, glabrous or glabrate with hairs mainly on veins below, dotted with small glands and often light purplish below; base rounded to subcordate, occasionally cordate. Fls single in upper lf axils; pedicels 1-3 mm long, < petioles. Bracts minute, subulate. Calyx 2.5-3 mm long, ± puberulent; scale c. 1.5 mm long at anthesis, strongly accrescent. Corolla 6-11 mm long to apex of lower lip, white, hairy; tube 4-6 mm long, straight, ampliate; lower lip > upper lip, with middle lobe very broad; upper lip deeply lobed, the lobes ± rounded. Filaments hairy, at least in lower part, the longer pair > style. Nutlets 1-1.3 mm long, strongly granular.