Echinocereus weinbergii is a species of cactus native to Mexico.
Echinocereus weinbergii grows solitary almost spherical to spherical, green to stems reach height of a diameter of . There are ten to sixteen low and wide ribs. There are 3-11 thick radial spines that are long growing on round narrowly elliptical areoles. The short, funnel-shaped flowers are pale pink to purple and appear near the tips or sides of the shoots. They are long and reach a diameter of . The spherical, purple-colored, long by wide with black seeds.
There are two recognized subspecies:[1]
| Image | Scientific name | Distribution |
|---|---|---|
| Echinocereus weinbergii subsp. venustus | Mexico (Jalisco, Zacatecas, San Luis Potosí) | |
| Echinocereus weinbergii subsp. weinbergii | Mexico (W. Zacatecas, Aguascalientes, San Luis Potosí) | |
Plants are found in xeric scrubland and pinyon pine forest in Aguascalientes, San Luís Potosí, Jalisco, and Zacatecas.
Plants were distinguished from Echinocereus pulchellus by Weingart in 1912. They were reclassified to a variety by Taylor in 1985 and a subspecies in 1997. It was recognized by Sanchez et. al. as a separate species in 2020 based on multivariate analysis.