Trifolium lemmonii is a species of clover known by the common name Lemmon's clover. It is native to the Sierra Nevada of California, its distribution extending just into Nevada. It is a resident of the coniferous forests and sagebrush of the high mountains. It is a perennial herb spreading to form a mat or low clump. Each leaf is made up of 3 to 7 thick oval leaflets. The leaflets are 1 to 2 centimeters long, toothed on the edges, and coated in rough hairs. The inflorescence is a spherical umbel roughly 2 centimeters wide borne on an erect, arching peduncle. The flowes spread and droop from their attachment. Each has a hairy calyx of sepals with narrow, bristlelike lobes. The flower corolla is pale pink in color and just over a centimeter in length.