Caustic weed

Perennial herb with prostrate, ascending or decumbent stems mostly to 20 cm long, glabrous; at length woody at base with a thick or woody rhizome.

Leaves circular, ovate or oblong, 2–10 mm long, 1.5–5 mm wide, margins entire or finely toothed, base asymmetric; petiole to 1 mm long; stipules free or interpetiolar.

Cyathia as in preceding species.

Capsule without a fringed receptacle appendage at base.