''Hymenoxys brandegeei'' is a species of flowering plant in the

daisy family Asteraceae () is a large family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the order Asterales. The number of species in Asteraceae is rivaled only by the Orchidaceae, and which is the larger fam ...

known by the common names Brandegee's four-nerve daisy, Brandegee's rubberweed or western bitterweed. It is native to the states of

Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...

Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...

, and

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

in the southwestern United States. ''Hymenoxys brandegeei'' grows at elevations of in the mountains, often above timber line. It is a perennial herb up to tall. One plant generally produces one flower head per stem, up to 10 per plant. Each head has 14–23ray flowers and 150–250 disc flowers.Flora of North America, ''Hymenoxys brandegeei'' (Porter ex A. Gray) K. F. Parker, 1950. Brandegee’s rubberweed, western bitterweed
/ref> The oldest available name for this plant is ''Actinella grandiflora'' var. ''glabrata'', coined in 1874. In elevating the taxon to species status,

Asa Gray Asa Gray (November 18, 1810 – January 30, 1888) is considered the most important American botany, botanist of the 19th century. His ''Darwiniana'' (1876) was considered an important explanation of how religion and science were not necessaril ...

opted to forgo the common but not mandatory custom of using the varietal epithet as a species epithet. He chose instead to call the species ''Actinella brandegei''.Gray, Asa. 1878. Proceedings of the American Academy of Arts and Sciences 13: 373
/ref>

References

brandegeei Flora of the Southwestern United States Plants described in 1874 {{Asteroideae-stub