California macrophylla, commonly known as roundleaf stork's bill, is a species of flowering plant in the geranium family, Geraniaceae. It was formerly placed in the genus Erodium, but was later placed in a monotypic genus of its own named California.[1]
It is native to the southwestern United States and northern Mexico, where it grows in open habitat such as grassland and scrub. It is an annual herb that grows only a few centimeters high (1 inch), forming a patch of slightly lobed, somewhat kidney-shaped to rounded leaves on long, slender petioles. Leaves are green dorsally and purple ventrally, often developing clear red veins once the leaves mature. The inflorescence is a fragile umbel of flowers with petals around a centimeter long and white in color, often tinted pinkish or purplish. Petals break off easily and flowers rarely stay pristine for more than a day.[2] The fruit has a fuzzy base and a long, narrow style which may reach in length.