''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 The Sonoran Desert ( es, Desierto de Sonora) is a desert in North America and ecoregion that covers the northwestern Mexican states of Sonora, Baja California, and Baja California Sur, as well as part of the southwestern United States (in Arizona ...

of northwest Mexico in

Sonora Sonora (), officially Estado Libre y Soberano de Sonora ( en, Free and Sovereign State of Sonora), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is d ...

and the

Lower Colorado River Valley The Lower Colorado River Valley (LCRV) is the river region of the lower Colorado River of the southwestern United States in North America that rises in the Rocky Mountains and has its outlet at the Colorado River Delta in the northern Gulf of C ...

area at the

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

and

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

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
pachyacantha Flora of the Sonoran Deserts Flora of the California desert regions Flora of Sonora Flora of Arizona Natural history of the Colorado Desert Natural history of the Lower Colorado River Valley Flora without expected TNC conservation status {{rosid-stub