Pelecyphora

Pelecyphora aselliformis (commonly known as the "Hatchet Cactus") is among the most famous of all cacti for is unique shaped stem.The f. cristata deviate from the standard species for the stem which is fan shaped up to 10 cm (or more) long with age.

Turbinicarpus valdezianus v. albiflorus is is one the smallest cactus with tiny feathery spines that obscure the body of the plant. This is the population from Matehuala characterized by white flowers, yellow stamen and white stigma.