Pelecyphora, pincushion cactus or foxtail cactus[1] is a genus of cacti, comprising 20 species. They originate from Mexico and the United States.[2][3]
Common species include the Missouri foxtail cactus P. missouriensis,[4] widespread in grassland and forest west of the Mississippi, and the spinystar P. vivipara,[5] distributed across the US and into Canada, first described by Nuttall in 1813.