Stems rather stout, branching, rooting at nodes. Lvs on petioles (1)-3-5-(15) cm. long; stipules ovate, up to c. 4 mm. long. Lamina glab. or sts loosely hairy towards base and on veins, orbicular to reniform, or oblong-reniform, (5)-10-(20) mm. diam., occ. larger; sinus open or base ± truncate; margins finely, regularly crenulate to nearly entire. Peduncles (2.5)-3-4-(25) mm. long, slender, ± pilose. Bracts 2, suborbicular to ovate, glab. Fls 1-2-(4), sessile, forming heads ± 5 mm. diam.; petals ovate, purple to whitish. Fr. suborbicular, somewhat compressed, c. 3-(4) mm. diam., with broad commissure. Mericarps rounded on dorsal edge, obscurely to distinctly 3-5-(7)-ribbed on face.

n = 36

n = 38