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Tetraneuris linearifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Tetraneuris
Species:	T. linearifolia
Binomial name
Tetraneuris linearifolia (Hook.) Greene 1898
Synonyms
Synonymy Actinea linearifolia (Hook.) Kuntze Actinea ursina Standl. Actinella linearifolia (Hook.) Torr. & A.Gray Hymenoxys linearifolia Hook. Hymenoxys ursina (Standl.) B.L.Turner Picradenia linearifolia (Hook.) Britton Ptilepida linearifolia (Hook.) Britton Tetraneuris dodgei (Cockerell) Rydb. Tetraneuris latior (Cockerell) Rydb. Tetraneuris oblongifolia Greene

Tetraneuris linearifolia is a North American species of plants in the sunflower family, known by the common name fineleaf fournerved daisy. It grows in the south-central United States (Kansas, Oklahoma, Texas, New Mexico) and northern Mexico (Coahuila, Nuevo León, Tamaulipas).

Tetraneuris linearifolia is an annual herb up to 50 cm (20 in) tall. It forms a branching underground caudex sometimes producing as many as 10 above-ground stems. One plant can produce as many as 80 flower heads. Each head has 9–25 yellow ray flowers surrounding 50-200 yellow disc flowers.

References

1. The Plant List, Tetraneuris scaposa (DC.) Greene
2. NRCS. "Tetraneuris linearifolia". PLANTS Database. United States Department of Agriculture (USDA). Retrieved 9 December 2015.
3. Biota of North America Program 2014 county distribution map
4. Turner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100
5. SEINet Southwestern Biodiversity, Arizona chapter description, photos, distribution map
6. Flora of North America, Tetraneuris linearifolia (Hooker) Greene, Pittonia. 3: 269. 1898.
7. Hooker, William Jackson. 1837. Icones Plantarum 2: plate 146 + subsequent unnumbered text page full-page line drawing of Tetraneuris linearifolia (as Hymenoxys linearifolia), description in Latin, commentary and figure captions in English

External links

• Photo of herbarium specimen collected in Nuevo León in 1984

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• Tetraneuris
• Flora of Northeastern Mexico
• Flora of the Great Plains (North America)
• Flora of the United States
• Flora of the South-Central United States
• Plants described in 1836
• Taxa named by Edward Lee Greene
• Helenieae stubs
• Medicinal plant stubs