Stem prostrate and rooting, 1-2 cm. diam., terminating in a tuft of ± erect lvs. Lamina coriac., 4-15 × 2-10 cm., broadly ovate, regularly and shallowly crenate-dentate, glab.; petiole > lamina, ± fringed with hairs. Peduncle erect, much > lvs, up to 70 cm. tall in fr., us. with whorl of cauline lvs below floral bracts. Bracts in ∞ whorls, becoming smaller and more nearly entire upwards, glab. except for fringing hairs. Pedicels as many as bracts in each whorl and longer, sts > 8 cm. long, hairs if present not glandular. Calyx-clefts slightly to quite unequal; lobes large, oblong to slightly spathulate, obtuse to subacute, us. ± notched, veins obvious, hairs few, mostly on margins, non-glandular. Corolla 2-3 cm. diam., glab. outside, lobes broadly spathulate.

n = 24

2n = 48