There is only one species in this genus.

Leuchtenbergia principis. Central and N. Mexico. This is undoubtedly the queerest cactus in the Echinocactus group. It has a long tap root. The tubercles are finger-shaped, and the plant possesses a thick woody stem which never branches but forms groups 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 flowers are large, yellow and scented, and will last several days.

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