This plant is not self fertile. This means it needs two very same species plants to produce viable fertile true seeds. That is the reason for us to see hybrids of this plant being named as Dyckia goehringii.
Dyckia goehring has no other appearence but this one here.
Dyckia marnier-lapostollei, D. lindelvaldeae, D. goehringii, D. beateae, D. joanae-marcioi and many others are all self infertile plants.