About 30; see text.
Gutierrezia is a genus of flowering plants in the sunflower family. Plants of this genus are known generally as snakeweeds or matchweeds. There are about 30 variations of Gutierrezia found in North and South America, but only 11 are accepted as distinct species.[a] These plants contain chemical compounds which can be toxic to livestock and some are considered weeds. They bear small yellow daisylike flowers.
- Gutierrezia arizonica – Arizona snakeweed
- Gutierrezia californica – San Joaquin snakeweed
- Gutierrezia elegans – Lone Mesa snakeweed
- Gutierrezia microcephala – threadleaf snakeweed
- Gutierrezia petradoria – San Pedro snakeweed
- Gutierrezia pomariensis – orchard snakeweed
- Gutierrezia sarothrae – broom snakeweed
- Gutierrezia serotina – late snakeweed
- Gutierrezia sphaerocephala – roundleaf snakeweed
- Gutierrezia texana – Texas snakeweed
- Gutierrezia wrightii – Wright's snakeweed
- The ITIS Database lists G. pomariensis as accepted while the USDA NRCS does not, and the USDA NRCS lists G. elegans as accepted while the ITIS does not. Both have been included in this count.
- "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.
- 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.
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