Nolina is a genus of tropical xerophytic flowering plants, with the principal distribution being in Mexico and extending into the southern United States. They are large, dioecious plants.
Heterotheca, are North American plants in the sunflower family.
Isocoma commonly called Jimmyweed or goldenweed, is a genus of North American semi-woody shrubs in the sunflower family. It is found in the semi-arid areas of Southwestern United States and Mexico.
Thymophylla is a genus of perennial flowering plants in the marigold tribe within the sunflower family. Pricklyleaf is a common name for plants in this genus.
Iva is a genus of wind-pollinated plants in the daisy family, described as a genus by Linnaeus in 1753. Plants of this genus are known generally as marsh elders. The genus is native to North America.
Hedeoma is a genus of flowering plants in the mint family, Lamiaceae. It is native to North and South America. They are commonly known as false pennyroyals.
Helianthella, the little sunflower, is a genus of North American plants in the sunflower family.
Chaetopappa is a genus of plants in the daisy family which are known generally as leastdaisies.
Hymenopappus is a genus of flowering plants in the daisy family. Many species are known as woollywhites.
Arida is a genus of flowering plants in the daisy family, Asteraceae.
Hilaria is a genus of North American plants in the grass family. Members of the genus are commonly known as curly mesquite. They are found in the Southwestern United States, Mexico, and Guatemala.
Pectis cylindrica is an annual plant and species of Pectis. Pectis cylindrica is native to the southwestern United States and in northwestern Mexico.
Poliomintha is a genus of flowering plants in the mint family, Lamiaceae. It is native to the southwestern United States, Haiti, and northern Mexico.
Leuciva, is a North American genus of plants in the sunflower family.
Psathyrotopsis is a genus of North American plants in the Spanish needles tribe within the sunflower family.
Brickellia lemmonii is a North American species of flowering plants in the daisy family. It is native to northeastern and north-central Mexico and the southwestern United States.
Amauriopsis dissecta is a North American species of flowering plants in the daisy family known by the common names yellow ragweed and ragleaf bahia. It is native to the western United States as far north as the Black Hills of South Dakota and Wyoming, as well as in northern Mexico.
Carphochaete bigelovii, common name Bigelow's bristlehead, is a species of North American flowering plants in the sunflower family. They are native to northern Mexico and the southwestern United States.
Heterotheca fulcrata, known by the common name rockyscree false goldenaster, is a North American species of flowering plant in the aster family. It has been found in northern Mexico and in the western United States.
Hymenothrix wrightii is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico and the southwestern United States.
