Fagonia pachyacantha is a species of flowering plant in the caltrop family known by the common name sticky fagonbush. It is native to the Sonoran Desert of northwest Mexico in Sonora and the Lower Colorado River Valley area at the California and Arizona border.
Description Fagonia pachyacantha is a spreading perennial herb not more than in height with very glandular stems and foliage. Each leaf is divided into three flat, green leaflets and there are straight, pointed, spine-like stipules at the base of each set.
Flowers, each about 1.5 centimeters wide, appear in the axils of the sparse leaves. The flower has five purplish pink petals with bases narrowed to thin claws. The fruit is a rounded capsule about half a centimeter long.
References
External links Jepson Manual Treatment — Fagonia pachyacantha Fagonia pachyacantha — U.C. Photo gallery