Revis. Gen. Pl. 2: 429 (1891) APNI
Threat status:Victoria: rare (r)
Perennial or annual; stems to 1 m long, floating, stoloniferous, often reduced to a few cm long on stranded plants. Petioles of basal leaves 1–60 cm long; blades c. circular or very broadly ovate, entire, deeply cordate, 1–6 cm long. Flowers homostylous, in spaced pairs along a short inflorescence or the pairs loosely clustered on plants growing on mud; calyx 3–6 mm long; corolla 12–25(–33) mm diam., lobes 5(–6), with broad laciniate wings, not keeled; stigmas 2, sometimes 3. Capsule 3–6.5 mm long, c. equal to calyx; seeds globular to slightly ellipsoid-globular, somewhat laterally compressed, 0.6–1 mm long, black when mature, usually with prominent spaced obtuse tubercles, sometimes smooth; caruncle circular, pale. Flowers and fruits mostly Oct.–May.
EGL, GipP, HNF, HSF, MuF, NIS, SnM, VRiv. Also SA, Qld, NSW. New Guinea. Occurs in fresh water to 40 cm deep in ephemeral or permanent swamps, streams and rockpools, thriving on saturated soil when stranded. Mostly between Heyfield and Bairnsdale, with isolated occurrences along the Murray River and near Mt Buffalo. Altitude to c. 600 m but mostly below 100 m.
|Bioregion||Occurrence status||Establishment means|
|Northern Inland Slopes||present||native|
|East Gippsland Lowlands||present||native|
|New South Wales|
|Australian Capital Territory|