Gutierrezia serotina is a North American species of flowering plant in the family Asteraceae known by the common name late snakeweed.
It is endemic to Arizona in the United States.Biota of North America Program 2014 county distribution mapSEINet, Arizona Chapter, Southwestern Biodiversity
Description Gutierrezia serotina is a perennial herb or subshrub up to 30 cm (1 foot) in height. Leaves are very narrow, sometimes thread-like.
At the end of each branch there is an inflorescence of one or a few flower heads. The heads are larger than for most of the species in the genus. The head contains 8-17 disc florets with 4-9 yellow ray florets around the edge.Flora of North America, Gutierrezia petradoria (S. L. Welsh & S. Goodrich) S. L. Welsh, 1983. Goldenrod snakeweed
References
External links USDA Plants Profile for Gutierrezia serotina (late snakeweed) Missouri Botanical Garden: photo of herbarium specimen collected in Arizona (1935) — isotype of Gutierrezia serotina.