Ranunculus inundatus: is a member of the Ranunculaceae family. Members of this genus are known as Buttercups. This species is sometimes known as the River Buttercup.
Ranunculus inundatus is an aquatic or semi-aquatic perennial herb. The leaves are finely divided, about two centimetres across and held on long petioles or leaf stalks. Flowers are small, about one centimetre in diameter, bright yellow with five to seven petals. Flowering occurs in spring and summer. The blooms are said to be rarely profuse or conspicuous. We beg to differ. Although small, the flowers make up for their lack of size by their quantity. Our plant (see photo) is covered with cheerful yellow flowers for many months.
The River Buttercup requires a sunny situation in damp soil or shallow water up to 15 centimetres deep. The species is best grown in the shallow end of a pond to guard against drying out.
Ranunculus inundatus is found in Queensland, New South Wales, Victoria and South Australia.
The River Buttercup produces stolons (horizontal stems that grow above the ground and produce roots at the nodes) rather like an aquatic strawberry.
Propagate from pieces of stolon with roots.

Plants