Craterostigma nummulariifolium - Coinwort Lindernia

Coinwort Lindernia is an annual herb, 1-15 cm tall. Stems are erect, somewhat four-edged, sparsely spreading hairy on angles. Leaf blade is broadly ovate to round-ovate, 5-12 x 4-8 mm, below hairless or sparsely hairy only on midrib, base broadly wedge-shaped to heart-shaped, margin shallowly rounded toothed to wavy or tapering toothed, tip blunt; veins parallel from base. Flowers are borne at branch-ends or in leaf-axils, in umbel-like, few flowered clusters. Central flowers are stalkless or short stalked, cleistogamous; other flowers on flower-stalks about 2 cm, sometimes sterile. Flowers are violet, rarely blue or white, about 7 mm; lower lip spreading flat, 3-lobed; upper lip ovate, purplish. In a closely related plant Stalkless Lindernia, the upper lip is brown. Sepal-cup is about 3 mm, lobed to middle or 2/3 of length; sepals ovate to lanceshaped-ovate. Filaments of anterior stamens basally small appendaged. Capsule is narrowly ellipsoid, about twice as long as persistent sepal-cup, tip tapering. Coinwort Lindernia is found on the edge of rice fields, along streams, wet places; below 1800 m, in China, Myanmar, Himalaya, Thailand, Vietnam. Flowering: July-September.