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 | |
|---|---|
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| Tetraneuris torreyana flowering Natrona County, Wyoming, USA | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Tetraneuris |
| Species: | T. torreyana
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| Binomial name | |
| Tetraneuris torreyana | |
| Synonyms[1] | |
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Synonymy
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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
edit- ^ The Plant List, Tetraneuris torreyana (Nutt.) Greene
- ^ NRCS. "Tetraneuris torreyana". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 9 December 2015.
- ^ Biota of North America Program 2014 county distribution map
- ^ Flora of North America, Tetraneuris torreyana (Nuttall) Greene, 1898.
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