Clover
Genus of legumes
Clovers, also called trefoils, are plants of the genus Trifolium (from Latin tres 'three' and folium 'leaf'). They are herbaceous plants growing up to 30 cm (12 in) tall. The leaves are usually trifoliate and the small flowers are reddish to white or yellow.
From Wikipedia, under CC BY-SA. More on occurri.