Muelleria 17: 15 (2003) APNI
Threat status:Victoria: rare (r)
Stoloniferous, aquatic or semi-aquatic perennial, to c. 50 cm high. Leaves both tufted at base and cauline; petioles to 45 cm long, glabrous; lamina palmatisect, c. orbicular in outline, 5–13 cm diam., with ultimate segments narrow-linear, 0.5-2 mm wide, glabrous. Flowering stems erect, exceeding leaves, usually 1–3-flowered; sepals 5, spreading, ovate to obovate, 3–6.5 mm long, glabrous or shortly ciliate near basal margin; petals 8–16, narrowly obovate to obovate, 5–13 mm long, 3–6 mm wide, yellow; nectary lobe free in upper quarter, obtuse to truncate, c. 1 mm long; stamens 20–45. Achenes 25–45, ± lenticular, 2–4 mm long, the sides smooth or somewhat warty, sometimes distinctly rippled; beak 0.5–1.3 mm long, straight or reflexed; receptacle shortly hirsute in the staminal zone, with scattered hairs between achenes. Flowers Oct.–Nov.
DunT, EGL, GipP, Glep, GGr, HSF, VVP, WaP, Wim. Scattered throughout southern Victoria, but most common in south-west. Grows in stream verges and swamps. Plants are usually partially submerged, with emergent leaves and flowering stems.
Ranunculus amplus closely resembles R. inundatus, differing in being considerably larger in most respects. Typically, R. inundatus has leaves to 5 cm diam., up to 7 petals that are up to 7 mm long and achenes to 1.5 mm long.
|Bioregion||Occurrence status||Establishment means|
|Victorian Volcanic Plain||present||native|
|East Gippsland Lowlands||present||native|
|New South Wales|