Dioscorea is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. The vast majority of the species are tropical, with only a few species extending into temperate climates. It is named by the monk Charles Plumier after the ancient Greek physician and botanist Dioscorides.
Androsace, commonly known as rock jasmine, is a genus of flowering plants in the family Primulaceae, second only to Primula in the number of species. It is predominantly Arctic–alpine, with many species in the Himalayas, the mountains of central Asia, the Caucasus, and the southern and central European mountain systems, particularly the Alps and the Pyrenees.
Cylindropuntia bigelovii, the teddy bear cholla(choy-ya), is a cholla cactus species native to Northwestern Mexico, and to the United States in California, Arizona, and Nevada.
Comptonia peregrina is a species of flowering plant in the family Myricaceae. It is the only extant (living) species in the genus Comptonia, although a number of extinct species are placed in the genus. Comptonia peregrina is native to eastern North America, from southern Quebec, east to Nova Scotia, south to the extreme north of Georgia, and west to Minnesota. The common name is sweetfern or sweet-fern, or in Quebec, comptonie voyageuse.
Cylindropuntia imbricata, the cane cholla, is a cactus found in the Southwestern United States and northern Mexico, including some cooler regions in comparison to many other cacti. It occurs primarily in the arid regions of the Southwestern United States in the states of Oklahoma, Texas, New Mexico, Arizona, Colorado, and Nevada. It is often conspicuous because of its shrubby or even tree-like size, its silhouette, and its long-lasting yellowish fruits.
In 1984, the International Organization for Succulent Plant Study set up a working party, now called the International Cactaceae Systematics Group, to produce a consensus classification of the cactus family, down to the level of genus. Their classification has been used as the basis for systems published since the mid-1990s. Treatments in the 21st century have generally divided the family into around 125–130 genera and 1,400–1,500 species, which are then arranged in a number of tribes and subfamilies. However, subsequent molecular phylogenetic studies have shown that a very high proportion of the higher taxa are not monophyletic, i.e. they do not contain all of the descendants of a common ancestor. As of March 2017, the internal classification of the family Cactaceae remained uncertain and subject to change. A classification incorporating many of the insights from the molecular studies was produced by Nyffeler and Eggli in 2010.
Cylindropuntia is a genus of cacti, containing species commonly known as chollas, native to northern Mexico and the Southwestern United States. They are known for their barbed spines that tenaciously attach to skin, fur, and clothing. Stands of cholla are called cholla gardens. Individuals within these colonies often exhibit the same DNA, as they were formerly tubercles of an original plant.
Opuntioideae is a subfamily of the cactus family, Cactaceae. It contains 15 genera divided into five tribes. The subfamily encompasses roughly 220-250 species, and is geographically distributed throughout the New World from Canada, to Argentina. Members of this subfamily have diverse habits, including small geophytes, hemispherical cushions, shrubs, trees, and columnar cacti consisting of indeterminate branches or determinate terete or spherical segments.
Peucedanum is a genus of flowering plant in the carrot family, Apiaceae.
Cylindropuntia prolifera, known by the common name Coastal cholla, is a species of cactus.
Cylindropuntia leptocaulis, the desert Christmas cactus, desert Christmas cholla, pencil cactus, or tasajillo, is a species of cholla cactus.
Cylindropuntia spinosior, with the common names include cane cholla, spiny cholla and walkingstick cactus, is a cactus species of the North American deserts.
Prionosciadium is a genus in the carrot family, Apiaceae. It is endemic to Mexico. The plants are biennial herbs with large taproots.
Cylindropuntia molesta is a cactus species that is endemic to Baja California state in Mexico.
Cylindropuntia tunicata, commonly referred to as sheathed cholla, is a cholla native to the Chihuahuan Desert of North America and parts of South America.
