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Gutierrezia serotina is a North American species of flowering plant in the family Asteraceae known by the common name late snakeweed.

Gutierrezia serotina
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Gutierrezia
Species:	G. serotina
Binomial name
Gutierrezia serotina Greene 1899
Synonyms[1]
Gutierrezia polyantha A.Nelson

It is endemic to Arizona in the United States.[2][3]

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.[4]

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.

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