Pelecyphora dasyacantha is a species of flowering plant in the family Cactaceae, native to the Mexico.

Of the warts, which are up to 10 millimeters long, the older ones at the base of the shoots are often corked and thornless.

[3] The specific epithet dasyacantha is derived from the Greek words dasys for 'dense', 'rough', 'shaggy' and akantha for 'thorn'.

Nathaniel Lord Britton and Joseph Nelson Rose placed the species in the genus Escobaria in 1923.

[4] David Aquino & Daniel Sánchez moved the species to Pelecyphora based on phylogenetic studies in 2022.