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 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 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]
^USDA, NRCS (n.d.). "Tetraneuris torreyana". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 9 December 2015.
