Lophophora is a solitary or rarely caespitose button-like spineless cactus, normally unicephalous but becoming polycephalous with age. It is native to the southwestern United States (Texas and New Mexico) through Northeast Mexico and South to Querétaro in central Mexico. The species are extremely slow growing. Lophophora means "crest-bearing", referring to the tufts of trichomes that adorn each tubercle. The name is derived from the two Ancient Greek words λοφος (lophos, the crest of a hill or helmet) and φορεω (phoreo, to carry).