肖柃属（学名：Cleyera），又称红淡比属，是山茶科下的一个属，为灌木或乔木植物。该属共有约17种，分布于温带地区。

Cleyera is a plant genus consisting of 18 species of tender, extremely evergreen shrubs to small trees, mostly native to Mexico and Central America, and one from Eastern Asia. In the APG III system it is placed in the family Pentaphylacaceae.

The botanical name is derived from Andrew Cleyer, a Dutch physician of the seventeenth century. The plants are good for a specimen accent hedge or a mixed border landscape, with great unique bushes and colorful foliage, which make these plants superior to any other hedge shrubs. Though they are slow-growing, they can eventually reach 6–10 ft (1.8-3m) high. The plants grow densely upright with low spreading-branch habit, round-shaped form, and can be kept compact by occasionally tip-cutting. Leaves are glossy, oval-shaped, 6–10 cm long with dark-green and bronze-red to burgundy tinted young leaves. Very fragrant small creamy white to pale yellow flowers bloom in early summer with petals free or scarcely coalesced. The pollen can cause mild allergy symptoms. Fruits are spherical, greenish yellow, turning red to black.