''Hazardia cana'' is a rare North American 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 in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae w ...

known by the common names Guadalupe hazardia, San Clemente Island hazardia, or simply island hazardia. It is native to

San Clemente Island San Clemente Island (Tongva: ''Kinkipar''; Spanish: ''Isla de San Clemente'') is the southernmost of the Channel Islands of California. It is owned and operated by the United States Navy, and is a part of Los Angeles County. It is administered b ...

, one of the Channel Islands of California, and to

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 ...

(part of the State of

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 ...

). ''Hazardia cana'' is a bushy shrub reaching high. It has woolly, glandular herbage of oblong, sometimes finely toothed leaves long. At the ends of its grayish stems it produces cylindrical

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

. Each flower head has several rows of dark-colored phyllaries and an open end revealing disc florets and longer protruding ray florets. The florets are yellow when young but may age to red or purple.Flora of North America, ''Hazardia cana'' (A. Gray) Greene, 1887. San Clemente Island bristleweed
/ref> The main threat to this species on San Clemente Island was the presence of feral

goat The goat or domestic goat (''Capra hircus'') is a domesticated species of goat-antelope typically kept as livestock. It was domesticated from the wild goat (''C. aegagrus'') of Southwest Asia and Eastern Europe. The goat is a member of the a ...

s. The goats have been removed from the island and the plant is recovering.

References

External links

Calflora Database: '' Hazardia cana'' (Guadalupe hazardia, San Clemente Island hazardia)Jepson Manual Treatment of '' Hazardia cana''Missouri Botanical Garden: herbarium specimen + isotype of ''Diplostephium canum/Hazardia cana''
— ''collected on Guadalupe Island in 1875''.
UC CalPhotos gallery of '' Hazardia cana'' images
cana Flora of California Flora of Baja California Flora of Mexican Pacific Islands Natural history of the Channel Islands of California Natural history of the California chaparral and woodlands Endangered biota of Mexico Endangered flora of North America Plants described in 1876 Taxa named by Asa Gray Taxa named by Edward Lee Greene {{Astereae-stub