Ranunculus lappaceus and Ranunculus colonorum are very similar and often confused. Seed Biology and Germination: Vegetative Propagules: New season growth emerges from rootstock in autumn.įlowering times:Spring and summer in western NSW.

Grows mainly in winter and spring and top growth dies in summer. Wheeler.Īnnual stem, perennial rootstock. Nectary lobe cuneate and broader than long.Īchenes smooth in a globular head and hairless with rigidly curved, 1-2 mm long beaks.įrom J.M. Petals yellow, broadly obovate to cuneate. Key Characters:Leaves alternate or radical with broad, flat lobes, mainly radical, stem leaves smaller.įlowers regular, not spurred, 20-40 mm across. Slender, narrow curved or coiled beak, 1-2 mm long. 2-5 mm long by 2.5-4 mm wide, smooth, edges ridged. Achenes, flattened, egg shaped in outline. Nectary lobe, wedge shaped, broader than long.įruit:Globular cluster of achenes. Petals - 5 yellow, broad, smooth and shiny, egg shaped to triangular, 9-25 mm long with nectar pit at the base. Sepals - 5 egg shaped to oblong-oval, 4-8 mm long, spreading, overlapping. With dense, spreading hairs.įlower head:2-8 flowers per stem on long erect stalks. Stems: Usually erect, 20-600 mm high, branched. Stem leaves - Fewer, much smaller with narrow lobes or narrow oval shaped. Each segment usually has 3, toothed lobes or is deeply divided. Divided in sets of 3, toothed lobes or 3 stalked segments. Petiole - 50-180 mm long, with papery, clasping, sheathing bases.īlade - Egg to wedge shaped in outline. Summary:A softly hairy, erect perennial herb up to 600 mm high with bright yellow flowers and 3 segment, divided leaves.

Ranunculus is Latin for tadpole from the Latin rana meaning frog and may refer to the damp habitats preferred by many species in this genus.Īustralian Buttercup because it is an Australian native with rich yellow, butter coloured, cupped type flowers. Australian Buttercup Australian Buttercup

Ranunculus yellow buttercup