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
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Tetraneuris
Species:
T. torreyana
Binomial name
Tetraneuris torreyana
(Nutt.) Greene 1898
Synonyms[1]

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. "Tetraneuris torreyana". Natural Resources Conservation Service PLANTS Database. USDA. 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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