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).Biota of North America Program 2014 county distribution mapTurner, B. L. 2013. The comps of Mexico. A systematic account of the family Asteraceae (chapter 11: tribe Helenieae). Phytologia Memoirs 16: 1–100SEINet Southwestern Biodiversity, Arizona chapter description, photos, distribution map
Tetraneuris linearifolia is an annual herb up to 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.Flora of North America, Tetraneuris linearifolia (Hooker) Greene, Pittonia. 3: 269. 1898. 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
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External links Photo of herbarium specimen collected in Nuevo León in 1984