C. sepium: stems twining, climbing to the length of many feet over hedges and bushes; leaves ovate-triangular, pointed, with broad, angular basal lobes; peduncles axillary, bearing a single large pure white flower, with a pair of large, leafy bracts enclosing the calyx. - Hedges and bushy places. Fl. July, August.
C. Soldanella, found in maritime sands, has short, prostrate stems, small thick broadly rounded or kidney-shaped leaves, having broad rounded or angular lobes at the base, and large light pink flowers.