Strombocactus disciformis B&R is a dwarf solitary cactus form the mexican states of Hidalgo and Queretaro. For many years strombocactus has been a monospecific genus, then, in 1996 Glass and Arias described a new specimen from the state of Guanajuato as strombocactus disciformis ssp esperanzae. This new plant is even smaller than the species and bears deep magenta flowers, similiar to those of turninicarpus alonsoi Glass & Arias, which grows in the same locality.
These notes are only intended to describe my esperience in raising these plants from seed and are limited to growing strombocactus disciformis because the newer species is not yet part of my collection.
If kept rather dry mature plants are not difficult to grow, they flower freely and produce large quantity of seeds
Why then they are so difficult to find and sold at such high prices?
