Hydrocotyle capillaris

Glabrous, erect or lax annual 2–10 cm high, usually branched from base. Leaf-lamina to 2–9 mm across, deeply 3- or 5-lobed; lobes entire or 3-dentate; petiole 2–9 mm long; stipules scarious, ciliate or fringed, white to yellow. Umbels simple, leaf-opposed, 3–4 mm diam., 3–6-flowered; peduncle 2–12(–30) mm long; pedicel to 0.5 mm long. Petals yellow. Fruits c. 1 mm long, 1.5–2 mm wide; mericarps with keeled dorsal and intermediate ribs, area between them minutely pitted, area enclosed by intermediate ribs smooth and flat. Flowers spring.