Japan Flora: Glabrous, rhizomatous perennial; stems creeping and branched; leaves long- petiolate, reniform-cordate, 2-3 cm. long, 3-5 cm. wide, retuse to rounded, sometimes undulate on margin; peduncles usually longer than the leaves, terete; bracts broadly ovate or broadly ovate-deltoid, 1-1.3 cm. long, obtuse, mucronate; corolla pale rose, the limb obsoletely 5-angled, 4-5 cm. across. May-June. Sandy seashores;
Hokkaido, Honshu, Shikoku, Kyushu; common. Seashores of Eurasia and the Pacific Islands.