Ageratina, commonly known as snakeroot, is a genus of over 300 species of perennials and rounded shrubs in the family Asteraceae.
Iva is a genus of wind-pollinated plants in the family Asteraceae, 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.
Ageratina cuencana is a species of flowering plant in the family Asteraceae. It is endemic to Ecuador. Its natural habitats are subtropical or tropical moist montane forests and subtropical or tropical high-altitude shrubland. It is threatened by habitat loss.
Ageratina macbridei is a species of flowering plant in the family Asteraceae. It is endemic to Peru, where it occurs in several types of habitats, often near rivers.
Ageratina rhypodes is a species of flowering plant in the family Asteraceae. It is found only in Ecuador. Its natural habitats are subtropical or tropical moist montane forests and subtropical or tropical high-altitude grassland. It is threatened by habitat loss.
Ageratina riparia, commonly known as mistflower, is a species of flowering plant in the family Asteraceae, native to Mexico. The species is widely adventive and has spread to Cuba, Jamaica, and other parts of the Caribbean. It has also been introduced as an ornamental plant and naturalized in a variety of regions, including parts of Hawaii, South Africa, Southeast Asia, Macaronesia, Oceania, Peru, and the Indian subcontinent. In tropical climates, A. riparia is highly invasive and a variety of control methods have been developed to reduce its spread.
Ageratina herbacea is a North American species of flowering plants in the family Asteraceae known by the common names fragrant snakeroot and Apache snakeroot. It is native to desert regions of the southwestern United States and northern Mexico. It grows in rocky slopes in conifer forests and woodlands.
Ageratina occidentalis is a species of flowering plant in the family Asteraceae known by the common name western snakeroot or western eupatorium. It is native to the western United States where it grows in several types of habitat. It is found in California, Oregon, Washington, Idaho, Montana, Nevada, and Utah.
Ageratina adenophora, commonly known as Crofton weed, is a species of flowering plant in the family Asteraceae native to Mexico and Central America. Originally grown as an ornamental plant, it has become invasive into farmland and bushland worldwide. It is toxic to horses, which develop a respiratory disease known as Numinbah horse sickness after eating it.
Ageratina havanensis, the Havana snakeroot or white mistflower, is a species of flowering shrub in the family Asteraceae, native to the south-western United States (Texas), Cuba, and north-eastern and east-central Mexico. Unlike many other species of Ageratina, it is evergreen.
Henricksonia is a genus of flowering plants in the daisy family.
Lasianthaea is a genus of flowering plants in the family Asteraceae. The species are native primarily to Mexico, with one species extending just over the border into the United States and another south to northwestern South America.
Perymenium is a genus of South American and Mesoamerican plants in the tribe Heliantheae within the family Asteraceae.
Ageratina jucunda, called the Hammock snakeroot, is a North American species of plants in the family Asteraceae. It is found only in the southeastern United States, in the states of Georgia and Florida. It is a perennial herb growing up to 3 ft (0.91 m) tall.
Ageratina lemmonii, called the Lemmon's snakeroot, is a North American species of plants in the family Asteraceae. It is found only in the southwestern United States in the states of Arizona and New Mexico, as well as the states of Sonora, Sinaloa, Chihuahua and Durango in Mexico.
Ageratina paupercula, called the Santa Rita snakeroot, is a North American species of shrubs or perennial herbs in the family Asteraceae. It is found only in the states of Arizona, Sonora, Chihuahua, Durango, Nayarit, and Jalisco.
Ageratina thyrsiflora is a North American species of plants in the family Asteraceae. It is native mostly to northwestern Mexico. The range extends just barely into the United States, a single herbarium specimen having been collected in 1929 just north of the border town of Nogales, Arizona.
Brickellia coulteri, or Coulter's brickellbush, is a North American species of flowering plants in the family Asteraceae. It is native to Mexico and the southwestern United States.
Brickellia paniculata is a Mesoamerican species of flowering plant in the family Asteraceae. It is widespread in Tamaulipas west to Sinaloa and south as far as Costa Rica.
Chaetopappa plomoensis is a North American species of plants in the family Asteraceae. It found only in the State of Coahuila in northern Mexico.
