Kingcup

Height is up to 80 centimetres tall. The leaves are rounded to kidney-shaped, 3–20 centimetres across, with a bluntly serrated margin and a thick, waxy texture. Stems are hollow.
The flowers are yellow, 2–5 cm diameter, with 4-9 (mostly 5) petal-like sepals and many yellow stamens; they appear in early spring to late summer. The flowers are visited by a great variety of insects for pollen and for the nectar secreted from small depressions, one on each side of each carpel.