Subspecies, varieties, forms and cultivars of plants belonging to the Escobaria vivipara group

• Escobaria vivipara (Nutt.) Buxb.: It is a small solitary or clumping cactus. Some varieties form colonies of over 200 stems. This species is the most widespread, abundant and variable member of the genus. It is densely covered in a mat of star-shaped arrays of spines. Known as far north as Manitoba (Canada)
• Escobaria vivipara var. arizonica (Engelm.) D.R.Hunt: (Arizona Spinystar) - it is native to the desert southwest of the United States.
• Escobaria vivipara var. bisbeeana (Orcutt) D.R.Hunt: (Bisbee Spinystar) - It is native to Arizona and New Mexico.
• Escobaria vivipara var. borealis n.n.: same as Escobaria vivipara var. neomexicana (Engelm.) Buxb. Distribution: New Mexico.
• Escobaria vivipara var. buoflama (P.Fischer) N.P.Taylor
• Escobaria vivipara var. deserti (Engelm. in W.H.Brewer & S.Watson) W.T.Marshall: has cylindrical stems densely covered with spines. Flowers dirty-greenish-yellow to dull rusty-brown. Distribution: Southern Nevada, eastern California, southwestern Utah, and northwestern Arizona.
• Escobaria vivipara var. kaibabensis (P.Fischer) N.P.Taylor: (Kaibab Spinystar) - It is mostly limited to Arizona
• Escobaria vivipara var. neomexicana (Engelm.) Buxb. in Krainz: (New Mexico spinystar) - It is native to New Mexico and Texas. Spines nearly always white.
• Escobaria vivipara var. radiosa (Engelm.) D.R.Hunt: is native to Texas ( Hood, Wise, Brown, Hamilton, Montague and Young Counties),USA.
• Escobaria vivipara var. rosea (Clokey) D.R.Hunt