The
Pediocactus genus includes small species of cactus that grow either individually or in clusters, reaching heights of up to . The shoots, which can be green or glaucous, come in cylindrical, spherical, or depressed spherical shapes, with diameters ranging from and heights from . Despite lacking ribs, these shoots have warts measuring in length and in diameter. The characteristic appearance is contributed to by the
areoles, spaced apart (occasionally up to ). The shoots also have thorns, varying in number, color, and orientation. There can be up to ten light gray or white central spines, measuring , and three to 35 reddish to whitish marginal spines, which can be straight, curved, or comb-shaped, extending in length. The bell-shaped flowers at the top of the shoots come in colors ranging from yellow to magenta to white, with diameters of . The flowers are characterized by a glabrous or nearly glabrous pericarpel and a short floral tube. Flowering typically occurs in spring, but certain species form buds in late autumn, with some capable of flowering even in their juvenile stages. The fruits, initially greenish and cylindrical to spherical, transform into reddish-brown, dry structures upon ripening. Opening with a vertical gap, the fruits may be bare or possess a few scales. As the fruit opens, the remaining flower partially detaches, leaving a residue resembling a cap. The fruits contain blackish-brown, wrinkled to tuberous, obovate, or pear-shaped seeds. These seeds ripen 4 to 6 weeks after flowering and remain viable for an exceptionally long period, lasting at least 10 years. ==Species==