Revis. Gen. Pl. 2: 429 (1891) APNI
Threat status:Victoria: vulnerable (v); listed in Flora and Fauna Guarantee Act 1988
Perennial; stems to 3 m long, floating, stoloniferous. Petioles of basal leaves 8–42 cm long; blades broad-ovate to c. circular, crenate to crenate-dentate, deeply cordate, 3–13(–15) cm long; blades of stem leaves smaller, sometimes reniform to c. deltoid. Flowers heterostylous, 8–14 in a cluster subtended by 1–4 stem leaves or rarely in spaced pairs along a short inflorescence; calyx 5.5–10(–16) mm long; corolla 20–40(–50) mm diam., lobes (4–)5(–6), with broad laciniate wings and keel; stigmas mostly (2–)5, each with a vertical papillate wing decurrent on the style, the decurrent portions forming persistent stylar ridges. Capsule (4–)6–9 mm long, usually much shorter than calyx; seeds ellipsoid, strongly laterally compressed, (0.5–)0.6–0.9 mm long, pale brown, usually smooth, sometimes granular around edges; caruncle absent; minute hard projection present beside attachment point. Flowers mostly Sep.–May, fruits Nov.–Mar.
DunT, MuF, MuM, NIS, VRiv, VVP, WPro, Wim. Also WA, NT, SA, Qld, NSW. Occurs in fresh, still to slow-flowing water to 1.5 m deep in swamps, lagoons, irrigation channels and streams, also frequent in temporarily inundated depressions. Rare in all regions except RIV (and perhaps now extinct in MID, PROM and WIM from where there have been no contemporary collections).
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||native|
|Northern Inland Slopes||present||native|
|New South Wales|