Cacti of West and Southwest USA - Thelocactus
Plants > Cacti > Thelocactus
cacti are found only in Mexico; just one species grows in the USA, primarily in the Big Bend area of west Texas. The plants are small, globular or cylindrical, usually solitary, and produce large showy flowers right from the growing tip. Spines tend to be long and varied in color, growing on ribs that often have a spiral arrangement.