Another look at Hymenoxys subgenus Plummera (Asteraceae : Heliantheae : Gaillardiinae) from Arizona and New Mexico

Wagner, W. L. (Department of Botany, MRC 166, National Museum of Natural Hi story, Smithsonian Institution, Washington, DC 20560, U.S.A.), R. A. Fletch er (U.S. Forest Service, 517 Gold Ave., SW, Albuquerque, NM 87102, U.S.A.) & R. K. Shannon (Department of Botany, MRC-166, National Museum of Natural History, Smithsonian Institution, Washington, DC 20560, U.S.A.). Another lo ok at Hymenoxys subgenus Plummera (Asteraceae: Heliantheae: Gaillardiinae) from Arizona and New Mexico. Brittonia 51. 79-86. 1999. -The recent merger of Plummera into Hymenoxys is followed here. The two previously recognized species of Plummera are here treated as a single polymorphic species of Hym enoxys, H. ambigens, consisting of three varieties: var. ambigens from the Mescal, Santa Teresa, and Pinaleno Mountains of southeastern Arizona; var. floribunda from the Chiricahua, Dos Cabezas, Dragoon, Little Dragoon, and M ule Mountains of southeastern Arizona; and var, neomexicana described here from the Animas and Peloncillo Mountains of southwestern New Mexico.