Slender slightly woody ± glandular-pubescent plant, creeping, rooting at nodes, much-branched; stems up to c. 2 dm. long, branches prostrate or ascending at tips, almost filiform, clad in patent hairs. Lvs very thin, ± pubescent; lamina (1)-2-(4) cm. long, broad-oblong to ovate to orbicular, coarsely and irregularly doubly crenate-dentate. Petiole slender, c. 5-12 mm. long, clad in patent hairs. Infl. of 1-2-(5)-fld terminal and occ. axillary panicles (us. 2-3 together); pedicels subfiliform, nude or bracted. Fls c. 6 mm. diam.; calyx-lobes 1-2 mm. long, ovate, acute or subacute. Corolla c. 5-6 mm. diam., cut c. halfway into 2 nearly equal deeply concave lips, white, purple-spotted. Capsule ovoid to obovoid, 6-7 mm. long.

n = 18

2n = 36