Trifolium monanthum is a species of clover known by the common name mountain carpet clover. It is native to eastern California and western Nevada in the Sierra Nevada, and in Southern California in the eastern Transverse Ranges, and the San Jacinto Mountains. It occurs at elevations above 1,500 metres (4,900 ft) in coniferous forests, woodlands, and meadows. Trifolium monanthum is a small perennial herb forming small clumps of hairless or slightly hairy herbage. The leaves are made up of oval leaflets up to 1. 2 centimeters in length. The inflorescence is reduced with only a few flowers, or a single flower. The flower corolla measures up to 1. 2 centimeters long and is white, sometimes with lavender speckles. The bloom period is April to June.