One of the larger genera in the Cactus family, and one of the most variable.
From Mexico and Southern US. Usually having heavy spination and relatively small flowers, the fruits are copiously woolly. Includes the "Golden Barrel Cactus".
Melocactus are recognizable by the large cephalium that develops on mature plants. They are native from Brazil to Southern Mexico, including the Caribbean.
Parodia is a genus of cactus native to the uplands of Argentina, Peru, Bolivia, Brazil, Colombia and Uruguay. There are about 50 species, many of which have been transferred from Eriocactus, Notocactus and Wigginsia.
Miniatures are defined differently for different shows. In most cases, the definition is a mature plant in a pot with an inside diameter less than three inches.
Cacti from the highlands of Bolivia and Northern Argentina. Coming from high altitudes.
Small cacti from Mexico and the Southwestern United States.
Thelocactus are spectacularly beautiful cacti with dense multicolor spination, well shaped tubercles, and large colorful flowers. Stenocactus is a genus of northern and central Mexican cacti of around 10 species related to Ferocactus.
The Echinopsis genus has been revised and now includes Lobivia, Tricocereus, Helianthrocereus, Pseudolobivia, and many other lesser known and rare genera. At the Mini-show all these genera will be accepted under their old names, as will hybrids and cultivars.
Eriosyce is a genus of cacti native to Chile. Neoporteria and Neochilenia are genera from the Central and Northern Coasts of Chile, and the Southern Coast of Peru.