Tanacetum is a genus of about 160 species of flowering plants in the aster family, Asteraceae, native to many regions of the Northern Hemisphere. They are known commonly as tansies. The name tansy can refer specifically to Tanacetum vulgare, which may be called the common tansy or garden tansy for clarity.
Tanacetum parthenium, known as feverfew, is a flowering plant in the daisy family, Asteraceae. It may be grown as an ornament, and may be identified by its synonyms, Chrysanthemum parthenium and Pyrethrum parthenium.
Parthenium is a genus of North American shrubs in the tribe Heliantheae within the family Asteraceae and subfamily Asteroideae.
Chaetopappa ericoides is a species of flowering plant in the family Asteraceae known by the common names rose heath and heath-leaved chaetopappa. It is native to the southwestern and western Great Plains regions of the United States, plus northern Mexico. It is found in California, Nevada, Arizona, Utah, New Mexico, Colorado, Wyoming, Texas, Oklahoma, Kansas, Nebraska, Chihuahua, Coahuila, Sonora, Durango, Zacatecas, San Luis Potosí, and Nuevo León.
Brickellia californica, known by the common name California brickellbush, is a species of flowering plant in the family Asteraceae.
Crepis occidentalis is a North American species of flowering plant in the daisy family known by the common names western hawksbeard, or largeflower hawksbeard. It is native to western Canada and the western United States.
Townsendia condensata is a species of flowering plant in the family Asteraceae known by the common names cushion Townsend daisy and cushion townsendia. It is native to North America where it is known from many scattered occurrences in the mountains of the western United States and Alberta in Canada. It is mainly limited to the alpine climates of high mountain peaks, where it grows in meadows, tundra, and barren, rocky talus. It grows alongside other alpine plants such as Eriogonum androsaceum.
Townsendia leptotes is a species of flowering plant in the family Asteraceae known by the common names common Townsend daisy and slender townsendia. It is native to the western United States, where it grows in the alpine climates of high mountain ranges from California to Montana to New Mexico.
Lepidium barnebyanum is a rare species of flowering plant in the family Brassicaceae known by the common names Barneby's pepperweed, Barneby's pepper-grass, and Barneby's ridge-cress. It is endemic to Utah, where there is a single population in Duchesne County. It is a federally listed endangered species of the United States.
Thymophylla tephroleuca is a rare species of flowering plant known by the common names ashy pricklyleaf and ashy dogweed. It is endemic to Texas in the United States, where it occurs in two counties near the Mexican border. It became rare due to the destruction and degradation of its habitat. It is a federally listed endangered species of the United States.
Pyrrocoma clementis is a species of flowering plant in the family Asteraceae known by the common name tranquil goldenweed. It is native to Colorado, Utah, and Wyoming in the United States.
Cirsium eatonii, commonly known as Eaton's thistle or mountaintop thistle, is a North American species of flowering plants in the aster family.
Oonopsis foliosa is a species of flowering plant in the family Asteraceae known by the common name leafy false goldenweed. It is native to Wyoming and Colorado in the United States, where it occurs in the Rocky Mountain foothills and the edges of the Great Plains.
Parthenium integrifolium is a species of flowering plant in the family Asteraceae known by the common names wild quinine, American feverfew, and eastern feverfew. It is native to the eastern and midwestern United States.
Xanthisma coloradoense is a species of flowering plant in the family Asteraceae known by the common name Colorado tansyaster. It is native to Colorado and Wyoming in the United States.
Townsendia rothrockii is a species of flowering plant in the family Asteraceae known by the common name Rothrock's Townsend daisy. It is endemic to Colorado in the United States, where there are 35 occurrences across thirteen counties. Reports of the plant from New Mexico are false.
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.
Erigeron leiomerus is a rare species of flowering plant in the family Asteraceae known by the common names rockslide yellow fleabane or rockslide fleabane. It is native to the western United States, primarily in the Rocky Mountains and the Great Basin. It has been found in Montana, Idaho, Nevada, Utah, Wyoming, Colorado, and New Mexico.
Symphyotrichum porteri is a species of flowering plant in the family Asteraceae endemic to the foothills of the Rocky Mountains in the U.S. states of Wyoming, Colorado, and New Mexico. Commonly known as Porter's aster, it is a perennial, herbaceous plant that may reach 10 to 50 centimeters tall. Its flowers have white, rarely pinkish, ray florets and yellow, becoming pink then brown, disk florets. S. porteri grows at elevations of 1,800–2,900 meters. Its limited range makes it a NatureServe Vulnerable (G3) species, and it is classified Critically Imperiled (S1) in Wyoming.
