Several plants of the genus Trifolium, family Leguminosae, the leaves of which appear to be divided into three lobes. Birdsfoot trefoil Lotus corniculatus is a low-growing perennial found in grassy places through Europe, N Asia, and parts of Africa. Its has five leaflets to each leaf, but the first two are bent back so it appears to have only three. The yellow flowers, often tinged orange or red, are borne in heads with only a few blooms. Hop trefoil Trifolium campestre has leaves with only three leaflets and tight-packed round heads of yellow flowers about 1.5 cm/0.6 in across. It also grows in grassy places through Europe, W Asia, N Africa, and North America.