Tetraneuris torreyana

Tetraneuris torreyana is a North American species of plants in the sunflower family, known by the common name Torrey's four-nerve daisy.[2] It grows in the western United States, in extreme southern Montana, Arizona, New Mexico, Utah, Colorado, and Wyoming.[3]

Tetraneuris torreyana
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Tetraneuris
Species:
T. torreyana
Binomial name
Tetraneuris torreyana
(Nutt.) Greene 1898
Synonyms[1]
Synonymy
  • Actinella torreyana Nutt. 1841
  • Actinea torreyana (Nutt.) J.F. Macbr.
  • Hymenoxys torreyana (Nutt.) K.F. Parker
  • Actinea depressa Kuntze
  • Actinella depressa Harv. & Gray ex Gray
  • Hymenoxys depressa (Torr. & A.Gray ex A.Gray) S.L.Welsh & Reveal
  • Hymenoxys lapidicola S.L.Welsh & Neese
  • Tetraneuris depressa (Torr. & A.Gray ex A.Gray) Greene

Tetraneuris torreyana is a perennial herb up to 15 cm (5.9 in) tall. It forms a branching underground caudex sometimes producing as many as 40 unbranched, above-ground stems. One plant can produce as many as 40 flower heads. Each head has 7–14 yellow ray flowers surrounding 25-150 yellow disc flowers.[4]

References
  1. The Plant List, Tetraneuris torreyana (Nutt.) Greene
  2. USDA, NRCS (n.d.). "Tetraneuris torreyana". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 December 2015.
  3. Biota of North America Program 2014 county distribution map
  4. Flora of North America, Tetraneuris torreyana (Nuttall) Greene, 1898.


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