Hydrocotyle L.
Stipules present Hydrocotyle
Leaves peltate, orbicular, crenulate, 1–6 cm or more diam., glabrous, on long petioles. Stems stoloniferous, rooting at the nodes
Umbels compound, 1–6 cm diam. Sandy soil near sea beaches. Introd. from S. America. Fl. summer. Beach Pennywort Hydrocotyle bonariensis
Umbels simple, 2–5-flowered or sometimes the peduncle with successive whorls of flowers. Georges River. Freshwater swamps. Fl. summer. Hydrocotyle verticillata