Escobaria
Escobariamissouriensis var. asperispina
Synonym
Escobaria
missouriensis subsp. missouriensis aperispina
Escobaria
missouriensis subsp. aperispina
Coryphantha
asperispina
Escobaria
asperispina
Neobesseya
asperispina
According to my experience this species is not very frost resistant.
BTW only this species typically has a yellowish tuberous roo...Read More