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.
; SpeciesGutierrezia alamanii - ChihuahuaGutierrezia argyrocarpa - HidalgoGutierrezia arizonica – Arizona snakeweed - Arizona, SonoraGutierrezia baccharoides - Chile, ArgentinaGutierrezia californica – San Joaquin snakeweed - California, Baja California, Arizona Gutierrezia conoidea - Chihuahua, Durango, Jalisco, ZacatecasGutierrezia dracunculoides - USA Gutierrezia dunalii - Morelos, México StateGutierrezia elegans - Lone Mesa snakeweedGutierrezia espinosae - ChileGutierrezia gayana - ChileGutierrezia gilliesii - ArgentinaGutierrezia grandis - Nuevo León, CoahuilaGutierrezia isernii - ArgentinaGutierrezia mandonii - Argentina, BoliviaGutierrezia microcephala – threadleaf snakeweed - southwestern USA, northern Mexico Gutierrezia neaeana - ChileGutierrezia paniculata - ChileGutierrezia petradoria – San Pedro snakeweed - UtahGutierrezia pomariensis - UtahGutierrezia pulviniformis - ArgentinaGutierrezia ramulosa - Baja CaliforniaGutierrezia repens - ArgentinaGutierrezia resinosa - ChileGutierrezia sarothrae – broom snakeweed - western Canada, western + central USA, northern MexicoGutierrezia sericocarpa - San Luis Potosí, Durango, Zacatecas, Guanajuato, Querétaro, NayaritGutierrezia serotina – late snakeweed - ArizonaGutierrezia solbrigii - ArgentinaGutierrezia spathulata - ArgentinaGutierrezia sphaerocephala – roundleaf snakeweed - USA, northern MexicoGutierrezia taltalensis - ChileGutierrezia texana – Texas snakeweed - USA, Nuevo LeónGutierrezia wrightii – Wright's snakeweed - USA, Chihuahua, Durango, Sonora