Buttercup
There are about 200 to 600 species in this one genus. They mostly have yellow or sometimes white flowers. Buttercups include a wide variety of flower types, grouped by a plant naming system in the genus Ranunculus. Among them are the Meadow Buttercup (Ranunculus acris), Goldilocks Buttercup (R. auricomus), Creeping Buttercup (R. repens), Large White Buttercup (R. platanifolius), Celery-leaved Buttercup (R. sceleratus), Corn Buttercup (R. arvensis), Bulbous Buttercup (R. bulbosus) and Glacial Buttercup (R. glacialis).