Subspecies, varieties, forms and cultivars of plants belonging to the Sclerocactus glaucus group

• Sclerocactus franklinii J. W. Evans: is s local form of Sclerocactus glaucus, but not sufficiently distinct to deserve its own formal status. Distribution: Mesa and Delta County, Colorado.
• Sclerocactus glaucus (K.Schum.) L.D.Benson: Ball-shaped cactus, single or clumping. Stems green or powdery blue coloured 4 to 30 cm tall, 4 to 9 cm in diameter. Central spines unhooked, the lower ones brown, the upper ones white 1-3 cm long, 6 to 8 radials, 5 mm long. Flowersl purplish-red or pink.
• Sclerocactus glaucus '' Debeque form '' (K.Schum.) L.D.Benson: It has tall larger blue body with stiff spines. It grows in northern edge of distribution for this species.
• Sclerocactus glaucus f. cristata hort.: Crested form easily recognizable for the characteristic unhooked central spines.
• Sclerocactus glaucus subs. wetlandicus var. ilseae (Hochstätter) Hochstätter
• Sclerocactus wetlandicus Hochstätter: Morphologically very similar to Sclerocactus glaucus, but the two populations are geographically separated.
• Sclerocactus wetlandicus f. cristata hort.: Crested form easily with unhooked central spines. Several clones do exist.