Turbinicarpus sp.
Date: 2002 April 6
One of the types of Turbinicarpus which has sometimes been placed in Gymnocactus.
This specimen was grown from seed sown in 1997, originally obtained as Turbinicarpus mandragora,
but I am told by Manfred of www.turbiniarpus.de that is isn't.
He says that the flower is completely different.