Common name: Swamp Buttercup
Ranunculus undosus Melville APNI*
Description: Perennial, glabrous or sparsely pilose.
Flowering stems 15–45 cm high.
Leaves with lamina divided into broad segments with blunt spreading lobes mostly 2–8 mm wide; petiole 8–42 cm long. Sepals pilose. Petals 5–14, 8–18 mm long, 3.5–7.5 mm wide; nectary lobe attached laterally to form a pocket.
Achenes 25–95, 1.8–2.5 mm long (excluding beak), the margin conspicuously thickened.
Flowering: mostly spring or summer.
Distribution and occurrence: Grows on mud or black soil, mostly in intermittently wet sites.
NSW subdivisions: NWS, CWS, NWP, SWP
Other Australian states: Vic.
Text by B. G. Briggs & R. O. Makinson
Taxon concept: Flora of NSW 1 (1990)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.