Oxalis pes-caprae is more commonly known as the Bermuda buttercup, and is sometimes grown as an ornamental. It has compound leaves, each consisting of three heart-shaped leaflets resembling clover leaves. Flowers are attractive, but are a nuisance when they spread into gardens or shrubs. Flowers occur singly or in clusters on the ends of slender leaf stalks; each flower has 5 yellow petals. This species closely resembles woodsorrel but often grows more upright, has more showy flowers, and reproduces largely by bulbs. These flowers cover the fields and meadows from mid-November onwards, and it is said that the huge swathes of yellow fields can be seen from outer space!