Glab. herb with lvs tufted at nodes of rhizomes, often emitting stolons bearing offset plants. Lvs on stout petioles (2)-3-7·5-(15) cm. or even longer, expanded and sheathing at base. Lamina glab. to strigose, (5)-25-(40) mm. diam., reniform to suborbicular, subcoriac. to fleshy, shallowly rather coarsely crenate; margins ± thickened; sinus narrow to open, or base cordate. Stipules ciliate, sts laciniate, to fimbriate. Umbels often compound, on peduncles up to c. 15 mm. long, up to ± 15 mm. diam.; rays us. ∞.Involucral bracts linear-oblong, up to c. 5mm. long or ± foliaceous at base of main umbel. Fls (3)-(20)-50, crowded. Fr. tetragonous, ± 2 mm. long on pedicels up to c. 6·5 mm. long. Mericarps obscurely to distinctly 5-ribbed.