Introduction to single-leaf clover: A rare plant under national second-level protection. Small perennial herb, 3-10 cm tall. There are 1 basal leaf, divided in an interdigitated shape, with open dichotomous veins. The flowers are solitary, the sepals are petal-shaped, and the petals are missing. Achenes narrowly oblanceolate. Single leaf grass is distributed in Yunnan, Sichuan, Gansu, and Shaanxi, and grows in the understory at an altitude of 2750-3900 meters.