The Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is 277 miles (446 km) long, up to 18 miles (29 km) wide and attains a depth of over a mile.
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.
Flaveria is a genus of plants in the family Asteraceae. They are sometimes called yellowtops. Some are annual or perennial herbs and some are shrubs. They bear yellow flowers in heads, with zero, one, or two ray florets in each head. These plants are found in the Americas, Asia, Africa, and Australia.
Flaveria trinervia is a species of flowering plant in the family Asteraceae known by the common names clustered yellowtops, speedyweed, and yellow twinstem. It is native to parts of the Americas, including the southeastern and southwestern United States, most of the Bahamas, Mexico, Belize, and parts of the Caribbean, especially Cuba, Cayman Islands, Jamaica, Hispaniola, Puerto Rico and Barbados. It is also known in many other places as an introduced species and often a noxious weed, such as in Hawaii.
Flaveria chlorifolia, the clasping yellowtops, is a North American plant species of Flaveria within the family Asteraceae. It is native to the southwestern United States and northern Mexico.
Flaveria campestris, common name alkali yellowtops, is a plant species native to the southwestern United States and to the southern Great Plains. It is found on saline soils and on the margins of lakes, ponds and streams.
Cylindropuntia abyssi, common name Peach Springs cholla, is a species of cactus endemic to northwestern Arizona. It is known from only from the Grand Canyon and in Peach Springs Canyon, on the Hualapai Reservation in Mohave County. It grows in desert scrub on limestone ledges and hilltops. The natural range of the species is fairly small, but it is locally abundant and growing in an isolated area with few threats to the species survival.
Berlandiera monocephala is a North American species of flowering plant in the family Asteraceae. It is native to the southwestern United States and northern Mexico, in the states of Arizona, New Mexico, Chihuahua, and Sonora. Most of the Mexican populations are found in the Sierra Madre Occidental along the Chihuahua/Sonora line.
Ericameria arizonica is a North American species of flowering shrub in the family Asteraceae known as Arizona goldenbush or Grand Canyon goldenweed. It has been found only on the cliffs on the south rim of the Grand Canyon in Coconino County, Arizona.
Flaveria bidentis, the coastal plain yellowtops, is a South American plant species of Flaveria within the family Asteraceae. It is native to South America, and naturalized in many places.
Flaveria oppositifolia is a rare Mexican plant species of Flaveria within the family Asteraceae. It has been found only in northeastern Mexico, from Tamaulipas west to Coahuila, south as far as Hidalgo and Aguascalientes. Some sources report the species to be present in the State of Texas in the United States, but the Texas populations have been recognized as a distinct species, F. brownii.
Flaveria floridana, the Florida yellowtops, is a North American plant species of Flaveria within the family Asteraceae. It has been found only along the Gulf Coast of Florida between Clearwater and Marco Island, mostly in the Tampa Bay region.
Flaveria linearis, known as narrowleaf yellowtops, is a North American plant species of Flaveria within the family Asteraceae. It is native to Florida, Cuba, Bahamas, and the Yucatán Peninsula of Mexico.
Flaveria sonorensis is a rare Mexican plant species of Flaveria within the family Asteraceae. It has been found only in southern Sonora and southwestern Chihuahua in northwestern Mexico. Some of the populations lie very close to hot mineral springs.
Flaveria vaginata is a very rare Mexican plant species of Flaveria within the family Asteraceae. It has been found only in two locations in central Mexico, one in northwestern Oaxaca, the other in southwestern Puebla.
Flaveria palmeri is a rare Mexican plant species of Flaveria within the family Asteraceae. It has been found only in the States of Coahuila and Nuevo León in northeastern Mexico.
Gaillardia parryi, or Parry's blanketflower, is a North American species of flowering plant in the sunflower family. It is native to the southwestern United States. Some of the populations are inside Grand Canyon National Park, others in Grand Staircase–Escalante National Monument.
Hymenothrix wrightii is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico and the southwestern United States.
Hymenoxys subintegra is a North American species of flowering plant in the daisy family known by the common name Arizona rubberweed. It has been found only in the states of Arizona and Utah in the southwestern United States. Many of the populations lie inside Grand Canyon National Park, others in Kaibab National Forest.
Isocoma rusbyi, the Rusby's goldenbush, is a North American species of plants in the family Asteraceae. It has been found in the States of Arizona, Utah, New Mexico, and Colorado in the southwestern United States. Some of the populations lie inside Grand Canyon and Petrified Forest National Parks, others in the Glen Canyon National Recreation Area.
