There is only one species in this genus.
Leuchtenbergia principis. Central and N. Mexico. This is undoubtedly the queerestin the Echinocactus group. It has a long tap . The tubercles are finger-shaped, and the plant possesses a thick woody which never branches but forms by producing young plants at the base. The areoles are at the tips of the tubercles, and bear papery spines, 8 to 14 radials and 1 to 2 centrals. The are large, yellow and scented, and will last several days.