Machaeranthera | |
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Machaeranthera_tanacetifolia | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Subfamily: | Asteroideae |
Tribe: | Astereae |
Subtribe: | Machaerantherinae |
Genus: | Machaeranthera Nees |
Type species | |
Aster tanacetifolius [1] Kunth. | |
Synonyms [2] | |
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Machaeranthera is a genus of North American flowering plants in the family Asteraceae which are known by the common name tansyaster. [3] [4]
Tansyasters are variable in appearance. Some are small, singular wildflowers, while others are sprawling shrubs. Several species easily hybridize with each other, as well, making identification difficult. In general, members of the genus may be identified by the sharp-pointed, dagger-shaped anthers in the disc florets at the center of the flower. The flower heads are usually daisylike, and are usually a shade of purple or blue, but may be pink, yellow, or white. Tansyasters are native to western North America. [4]
The genus Machaeranthera is distinguished from the genus Dieteria by having once- or twice-pinnate leaves, whereas Dieteria has entire to toothed leaves. [5]
Machaeranthera means "swordlike anthers". [6]
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.
Grindelia (gumweed) is a genus of plants native to the Americas belonging to the family Asteraceae. The genus was named for Latvian botanist David Hieronymus Grindel, 1776–1836.
Bouteloua is a genus of plants in the grass family. Members of the genus are commonly known as grama grass.
Garrya is a genus of flowering plants in the family Garryaceae native to Mexico, the western United States, Central America and the Greater Antilles. Common names include silk tassel and tassel bush.
Hymenoxys is a genus of plants in the sunflower family, native to North and South America. It was named by Alexandre Henri Gabriel de Cassini in 1828.
Heterotheca, are North American plants in the family Asteraceae.
Isocoma, commonly called jimmyweed or goldenweed, is a genus of North American semi-woody shrubs in the family Asteraceae. It is found in the semi-arid areas of Southwestern United States and Mexico.
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.
Fraxinus velutina, the velvet ash, Arizona ash or Modesto ash, is a species of Fraxinus native to southwestern North America, in the United States from southern California east to Texas, and in Mexico from northern Baja California east to Coahuila and Nuevo León.
Isocoma pluriflora, commonly called southern jimmyweed or southern goldenbush, is a North American species of flowering perennial herbs in the family Asteraceae. It grows in northern Mexico and in the southwestern and south-central United States.
Chaenactis is a genus of plants in the daisy family which are known generally as pincushions or dustymaidens.
Chaetopappa is a genus of plants in the family Asteraceae which are known generally as leastdaisies.
Hymenopappus is a genus of flowering plants in the daisy family. Many species are known as woollywhites.
Dieteria is a North American genus of flowering plants in the family Asteraceae.
Dieteria canascens is an annual plant or short lived perennial plant in the family Asteraceae, known by the common names hoary tansyaster and hoary-aster.
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.
Salix taxifolia, the yewleaf or yew-leaf willow, is a species of willow native to all of southern Mexico, also Pacific Coast regions, north to Sinaloa, and in the south Pacific Coast of Mexico into central Guatemala. Scattered populations are also reported from northern Mexico and from the US states of Texas, New Mexico, and Arizona.
Amauriopsis is a genus of North American plants in the Spanish needles tribe within the daisy family. The plants grow in Mexico and the western United States.
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.