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Gutierrezia petradoria

Summary

Gutierrezia petradoria is a species of flowering plant in the family Asteraceae known by the common names San Pedro snakeweed and goldenrod snakeweed[2][3][4]

Gutierrezia petradoria
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Gutierrezia
Species:
G. petradoria
Binomial name
Gutierrezia petradoria
(S.L.Welsh & Goodrich) S.L.Welsh 1983
Synonyms[1]
  • Xanthocephalum petradoria S.L.Welsh & Goodrich 1981

Distribution edit

The plant is endemic to western Utah, located the Southwestern United States.[5] It is native to the Lower Sevier River watershed, within Juab County and Millard County.[6]

Description edit

Gutierrezia petradoria is a perennial herb to woody subshrub, growing up to 40 cm (16 in) in height.

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 5-13 disc florets with 4-10 yellow ray florets around the edge. The ray flowers are up to 10 mm (0.39 in) long, much larger and showier than in the case of most other species in the genus.[2]

References edit

  1. ^ The Plant List, Gutierrezia petradoria (S.L.Welsh & Goodrich) S.L.Welsh
  2. ^ a b Flora of North America, Gutierrezia petradoria (S. L. Welsh & S. Goodrich) S. L. Welsh, 1983. Goldenrod snakeweed
  3. ^ USDA, NRCS (n.d.). "Gutierrezia petradoria". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 19 July 2015.
  4. ^ Albee, B.J., L.M. Shultz, and S. Goodrich. "Atlas of the vascular plants of Utah" − Utah Museum Natural History Occasional Publication 7, 1988, Salt Lake City, Utah.
  5. ^ Biota of North America Program 2014 county distribution map
  6. ^ Natureserve.org (Version 7.1): Comprehensive Report for Gutierrezia petradoria

External links edit

  • USDA Plants Profile for Gutierrezia petradoria (San Pedro snakeweed)
  • Photo of herbarium specimen collected in Utah in 1980 — isotype of Gutierrezia petradoria.