''Crossosoma'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of the plant family

Crossosomataceae Crossosomataceae is a small plant family, consisting of four genera of shrubs found only in the dry parts of the American southwest and Mexico. This family has included up to ten species in the past, although as of 2021 six species are still re ...

. It consists of two species of

shrub A shrub (often also called a bush) is a small-to-medium-sized perennial woody plant. Unlike herbaceous plants, shrubs have persistent woody stems above the ground. Shrubs can be either deciduous or evergreen. They are distinguished from trees ...

s. ''

Crossosoma californicum ''Crossosoma californicum'', known by the common name California rockflower, is one of only a few species in the flowering plant family Crossosomataceae. Distribution ''Crossosoma californicum'' is native to San Clemente and Santa Catalina Isla ...

Nutt. Thomas Nuttall (5 January 1786 – 10 September 1859) was an English botanist and zoologist who lived and worked in America from 1808 until 1841. Nuttall was born in the village of Long Preston, near Settle in the West Riding of Yorkshire and ...

is found on the

Palos Verdes Peninsula The Palos Verdes Peninsula (''Palos Verdes'', Spanish for "Green Sticks") is a landform and a geographic sub-region of the Los Angeles metropolitan area, within southwestern Los Angeles County in the U.S. state of California. Located in the Sou ...

and

San Clemente San Clemente (; Spanish for " St. Clement") is a city in Orange County, California. Located in the Orange Coast region of the South Coast of California, San Clemente's population was 64,293 in at the 2020 census. Situated roughly midway betwee ...

and Santa Catalina islands of

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 ...

, as well as

Guadalupe Island Guadalupe Island ( es, Isla Guadalupe, link=no) is a volcanic island located off the western coast of Mexico's Baja California Peninsula and about southwest of the city of Ensenada in the state of Baja California, in the Pacific Ocean. The ...

Baja California Baja California (; 'Lower California'), officially the Free and Sovereign State of Baja California ( es, Estado Libre y Soberano de Baja California), is a state in Mexico. It is the northernmost and westernmost of the 32 federal entities of Mex ...

. ''

Crossosoma bigelovii ''Crossosoma bigelovii'', known by the common name ragged rockflower, is one of only a few species in the flowering plant family Crossosomataceae. It is native to the Mojave, Chihuahuan, and Sonoran Deserts of North America. It has been report ...

'' S.Wats. occurs in the deserts of California,

Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...

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 ...

, and

External links

''C. bigelovii'' treatment from the Jepson Manual''C. californicum'' treatment from the Jepson Manual
Flora of California Rosid genera Crossosomataceae Flora of Baja California Flora without expected TNC conservation status {{Rosid-stub