Cirsium arizonicum, the Arizona thistle, is a North American species of thistle in the family Asteraceae, native to the southwestern United States and northwestern Mexico. It has been found in Arizona, southeastern California, New Mexico, Nevada, Colorado, Utah, Sonora, and northwestern Chihuahua.
Dicoria canescens is a North American flowering plant in the family Asteraceae known by several common names including desert twinbugs and bugseed. This is a desert plant of the southwestern United States and northwestern Mexico, found in Sonora, Baja California, southern California, Nevada, Arizona, Utah, southwestern Colorado, and northwestern New Mexico.
Bidens bigelovii is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern and south-central United States and to Mexico as far south as Oaxaca.
Bidens discoidea, the small beggarticks, is a North American species of flowering plant in the family Asteraceae. It is widespread across eastern Canada and the eastern and central United States, from Nova Scotia west to Minnesota, south to Florida and Texas.
Bidens heterosperma, the Rocky Mountain beggarticks, is a North American species of flowering plant in the family Asteraceae. It is native to northwestern and north-central Mexico and the southeastern United States.
Bidens lemmonii is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern United States and Mexico.
Bidens leptocephala, the fewflower beggarticks, is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern United States and northern Mexico.
Brickellia brachyphylla, the plumed brickellbush or Hinckley's brickellbush, is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern United States, in Arizona, New Mexico, Colorado, western Texas, and the Oklahoma Panhandle. There are reports that it formerly occurred in southwestern Kansas, but these populations appear to be extinct.
Brickellia lemmonii, or Lemmon's brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northeastern and north-central Mexico and the southwestern United States.
Brickellia parvula, the Mt. Davis brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northeastern and north-central Mexico (Chihuahua) and the southwestern United States.
Brickellia pringlei, or Pringle's brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northern Mexico and the southwestern United States.
Brickellia rusbyi, the stinking brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northern Mexico and the southwestern United States.
Brickellia simplex, the Sonoran brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northern Mexico and the southwestern United States.
Brickellia betonicifolia, the betonyleaf brickellbush, is a Mexican species of flowering plants in the family Asteraceae. It is native to northwestern Mexico, in the States of Baja California, Sonora, Chihuahua, and Durango and the southwestern United States.
Brickellia floribunda, the Chihuahuan brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to northern Mexico and the south-western United States.
Carphochaete bigelovii, common name Bigelow's bristlehead, is a species of North American flowering plants in the family Asteraceae. They are native to northern Mexico and the southwestern United States.
Coreocarpus arizonicus, the little lemonhead, is a North American species of flowering plants in the daisy family native to northwestern Mexico and the southwestern United States. It has been found in southern Arizona, and in the adjacent Mexican States of Sonora, Chihuahua, Sinaloa, and Baja California Sur.
Dieteria bigelovii, also known as Bigelow's tansyaster or sticky aster, is a North American species of plants in the family Asteraceae.
Machaeranthera asteroides, the fall tansyaster, is a North American species of plants in the sunflower family. It is native to the southwestern United States and northern Mexico.
Helianthus laciniatus is a North American species of sunflower known by the common name alkali sunflower. It is found in the southwestern United States and north-central Mexico. It is fairly common in the Chihuahuan Desert.
