Parodia langsdorfii (Lehm.) D.R.Hunt
A very lovely plant. Therefore it has lots of names...
Synonyms: Wigginsia leprosorum,
Ritterocactus langsdorfii ssp. pulvinatus, Wigginsia prolifera, Notocactus prolifer, Wigginsia polyacantha, Echinocactus polyacanthus, Wigginsia langsdorfii ssp. pulvinatus, Notocactus polyacanthus, Notocactus langsdorfii var. pulvinatus, Notocactus langsdorfii, Parodia langsdorfii ssp. pulvinata, Notocactus longispinus, Notocactus langsdorfii var. leprosorum, Notocactus leprosorum, Wigginsia leprosorum, Wigginsia langsdorfii, Notocactus pulvinatus, Notocactus langsdorfii, Malacocarpus langsdorfii, Ritterocactus langsdorfii, Cactus langsdorfii, Wigginsia longispina