Hist. Pl. Dauphiné 3: 731 (1789) APNI
Suberect glabrous annual to c. 50 cm high; stems pithy, often rooting from lower nodes. Leaves mostly cauline; petioles of lower leaves to c. 10 cm long, upper leaves shortly petiolate to sessile; lamina ovate to narrowly elliptic, 1.5–6 cm long, 3–20 mm wide; margins entire or obscurely toothed. Flowers several to many in cymes or dichasia; sepals usually 4 or 5, spreading, ovate to obovate, 2–4 mm long, glabrous and yellowish; petals as many as sepals or fewer, spathulate, usually shortly exceeding sepals, yellow; nectary lobe rounded, c. 0.2 mm long, fused only at base; stamens c. 6–10; achenes 20–50, ovate, 2–3 mm long, lenticular, the faces with numerous small tubercles; beak triangular, c. 0.5–1 mm long. Flowers Sep.–Dec.
*GipP, *VVP, *WaP. Also SA. Native to southern Europe. Known from a few lowland swamps west of Melbourne (Portland, Snake Valley, Ballarat, Deer Park) where growing chiefly with native sedges and grasses.
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||naturalised|