About Tetraneuris scaposa (DC.) Greene
Tetraneuris scaposa, commonly known as stemmy four-nerve daisy and stemmy hymenoxys, is a North American flowering plant species belonging to the sunflower family. It is native to the southwestern and south-central United States, where it occurs in the states of Nebraska, Kansas, Oklahoma, Texas, New Mexico, Arizona, Utah, and Colorado, as well as northern Mexico in the states of Chihuahua, Coahuila, Nuevo León, Tamaulipas, San Luis Potosí, and Zacatecas.
This species is a perennial herb that grows up to 40 cm (16 inches) tall. It forms a branching underground caudex that can sometimes produce as many as 100 above-ground stems. Its leaves are concentrated low on the stem, close to the ground. Flower heads may grow individually, with one head per stem, or in small, tight clusters of multiple heads. Each flower head contains 12–26 ray flowers surrounding 25–180 disc flowers.
Among the Zuni people, an infusion of Tetraneuris scaposa is used as an eyewash. The Zuni hold the belief that this eyewash is not intended for people with a "bad heart".
