水金莲花 shui jin lian hua

Limnanthemum aurantiacum Dalzell, Hooker's J. Bot. Kew Gard. Misc. 2: 136. 1850.

Rhizomes horizontal. Stems cylindric, elongated, without rootlets from nodes, branched. Leaves 2 per node; petiole 3-9 cm; leaf blade orbicular, ca. 4.5 cm in diam., abaxially purple and punctate, base cordate. Flowers 2 per node, 5merous. Pedicel 1.5-4.5 cm. Calyx lobes 3-6 mm. Corolla yellow, 8-10 mm; lobes cuneate, margin laciniate, apex rounded to emarginate. Capsules globose, ca. 6 mm in diam., 10-15seeded. Seeds globose, ca. 1.5 mm in diam.; seed coat reticulate.

Standing water. Taiwan [W India, Sri Lanka].