Collected at just over 2100m in Hidalgo State, Mexico, this was a shrub to about 1.5m with leaves composed of broad, thick textured, glaucous, plastic-feeling leaflets, often curling under. White and yellow flowers are borne at varying times of year. A rather distinct form of the species, only known from this area. Best in a sunny sheltered position, where it will be very drought tolerant and hardy in most areas. Related to M. pallida.