Gutierrezia

Gutierrezia is a genus of flowering plants in the family Asteraceae, native to western North America and western South America. Plants of this genus are known generally as snakeweeds or matchweeds. Some species have been called greasewood. They are annual or perennial plants or subshrubs with yellow or white flowers.

These plants contain chemical compounds which can be toxic to livestock and some are considered weeds.

Species

• - Mexico (Chihuahua)
• - Mexico (Hidalgo)
• Gutierrezia arizonica – Arizona snakeweed - USA (Arizona), Mexico (Sonora)
• - Chile, Argentina
• Gutierrezia californica – San Joaquin snakeweed - USA (California, and Yavapai Co, Arizona), Mexico (Baja California)
• - Mexico (Chihuahua, Durango, Jalisco, Zacatecas)
• - USA (from Arizona to Nebraska and Tennessee)
• - Mexico (Morelos, México State)
• Gutierrezia elegans - Lone Mesa snakeweed - USA (Colorado)
• - Chile
• - Chile
• - Argentina
• - Mexico (Nuevo León, Coahuila)
• - Argentina
• - Argentina, Bolivia
• Gutierrezia microcephala – threadleaf snakeweed - southwestern USA, northern Mexico
• - Chile
• - Chile
• Gutierrezia petradoria – San Pedro snakeweed - USA (Utah)
• Gutierrezia pomariensis - USA (Utah)
• - Argentina
• - Mexico (Baja California)
• - Argentina
• - Chile
• Gutierrezia sarothrae – broom snakeweed - western Canada, western and central USA, northern Mexico
• - Mexico (San Luis Potosí, Durango, Zacatecas, Guanajuato, Querétaro, Nayarit)
• Gutierrezia serotina – late snakeweed - USA (Arizona)
• - Argentina
• - Argentina
• – roundleaf snakeweed - USA (Arizona, New Mexico, Texas), northern Mexico
• - Chile
• Gutierrezia texana – Texas snakeweed - USA (New Mexico, Texas, Oklahoma, Louisiana, Arkansas), Mexico (Nuevo León)
• Gutierrezia wrightii – Wright's snakeweed - USA (Arizona, New Mexico), Mexico (Chihuahua, Durango, Sonora)