| Gutierrezia | |
|---|---|
![]()  | |
| Gutierrezia sarothrae | |
| Scientific classification  | |
| Kingdom: | Plantae | 
| Clade: | Tracheophytes | 
| Clade: | Angiosperms | 
| Clade: | Eudicots | 
| Clade: | Asterids | 
| Order: | Asterales | 
| Family: | Asteraceae | 
| Subfamily: | Asteroideae | 
| Tribe: | Astereae | 
| Subtribe: | Gutiereziinae | 
| Genus: | Gutierrezia Lag.  | 
| Type species | |
| Gutierrezia linearifolia  Lag.[1] (syn of G. sarothrae)[2]  | |
| Synonyms[3] | |
  | |

Flower heads of Gutierrezia microcephala
Gutierrezia is a genus of flowering plants in the family Asteraceae, native to western North America and western South America.[4] Plants of this genus are known generally as snakeweeds or matchweeds.[5][1][6][7][8][9] Some species have been called greasewood.[10] They are annual or perennial plants or subshrubs with yellow or white flowers.[4]
These plants contain chemical compounds which can be toxic to livestock and some are considered weeds.[11]
- Gutierrezia alamanii - Chihuahua
 - Gutierrezia argyrocarpa - Hidalgo
 - Gutierrezia arizonica – Arizona snakeweed - Arizona, Sonora
 - Gutierrezia baccharoides - Chile, Argentina
 - Gutierrezia californica – San Joaquin snakeweed - California, Baja California, Arizona (Yavapai Co)
 - Gutierrezia conoidea - Chihuahua, Durango, Jalisco, Zacatecas
 - Gutierrezia dracunculoides - USA (from Arizona to Nebraska + Tennessee)
 - Gutierrezia dunalii - Morelos, México State
 - Gutierrezia elegans - Lone Mesa snakeweed
 - Gutierrezia espinosae - Chile
 - Gutierrezia gayana - Chile
 - Gutierrezia gilliesii - Argentina
 - Gutierrezia grandis - Nuevo León, Coahuila
 - Gutierrezia isernii - Argentina
 - Gutierrezia mandonii - Argentina, Bolivia
 - Gutierrezia microcephala – threadleaf snakeweed - southwestern USA, northern Mexico
 - Gutierrezia neaeana - Chile
 - Gutierrezia paniculata - Chile
 - Gutierrezia petradoria – San Pedro snakeweed - Utah
 - Gutierrezia pomariensis - Utah
 - Gutierrezia pulviniformis - Argentina
 - Gutierrezia ramulosa - Baja California
 - Gutierrezia repens - Argentina
 - Gutierrezia resinosa - Chile
 - Gutierrezia sarothrae – broom snakeweed - western Canada, western + central USA, northern Mexico
 - Gutierrezia sericocarpa - San Luis Potosí, Durango, Zacatecas, Guanajuato, Querétaro, Nayarit
 - Gutierrezia serotina – late snakeweed - Arizona
 - Gutierrezia solbrigii - Argentina
 - Gutierrezia spathulata - Argentina
 - Gutierrezia sphaerocephala – roundleaf snakeweed - USA (Arizona, New Mexico, Texas), northern Mexico
 - Gutierrezia taltalensis - Chile
 - Gutierrezia texana – Texas snakeweed - USA (New Mexico, Texas Oklahoma Louisiana Arkansas), Nuevo León
 - Gutierrezia wrightii – Wright's snakeweed - USA (Arizona, New Mexico), Chihuahua, Durango, Sonora
 
References
- 1 2 Tropicos, Gutierrezia Lag.
 - ↑ The Plant List, Gutierrezia linearifolia Lag.
 - 1 2 "Flann, C (ed) 2009+ Global Compositae Checklist". Archived from the original on 2014-12-01. Retrieved 2014-12-01.
 - 1 2 Guy L. Nesom, "Gutierrezia Lagasca, Gen. Sp. Pl. 30. 1816", Flora of North America, vol. 20
 - ↑ Lagasca y Segura, Mariano. 1816. Genera et species plantarum, quae aut novae sunt aut nondum recte cognoscuntur, Elench. Pl. 30
 - ↑ "Asteraceae of North America Update, database (version 2010.5.13)". Integrated Taxonomic Information System. Retrieved January 5, 2013.
 - ↑ "Gutierrezia Lag. Taxonomic Hierarchy". Integrated Taxonomic Information System. Retrieved January 5, 2013.
 - ↑ "Classification for Kingdom Plantae Down to Genus Gutierrezia Lag". United States Department of Agriculture Natural Resources Conservation Service. Retrieved January 5, 2013.
 - ↑ Lane, M. A. 1985. Taxonomy of Gutierrezia (Compositae: Astereae) in North America. Systematic Botany 10(1): 7–28
 - ↑ . – via Wikisource.
 - ↑ Everitt, J.H.; Lonard, R.L.; Little, C.R. (2007). Weeds in South Texas and Northern Mexico. Lubbock: Texas Tech University Press. ISBN 0-89672-614-2.
 - ↑ Biota of North America Program 2013 county distribution maps
 - ↑ CONABIO. 2009. Catálogo taxonómico de especies de México. 1. In Capital Nat. México. CONABIO, México D.F.
 - ↑ The Plant List, search for Gutierrezia
 - ↑ "Gutierrezia". plantsoftheworldonline.org. Royal Botanical Gardens Kew. Retrieved 2018-10-18.
 
External links
 Media related to Gutierrezia at Wikimedia Commons- Jepson Manual Treatment
 
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