: Native to New Mexico and Texas (perhaps a bit into North Chihuahua, Arizona and South Colorado)
Habitat: It is often found in pure populations on limestone.

• Escobaria vivipara var. neomexicana (Engelm.) Buxb. in Krainz
• Cactus neomexicanus (Engelm.) Small
• Cactus radiosus var. neomexicanus (Engelm.) J.M.Coult.
• Coryphantha neomexicana (Engelm.) Britton & Rose
• Coryphantha neovivipara var. neomexicana (Engelm.) Y.Itô
• Coryphantha radiosa var. neomexicana (Engelm.) Schelle
• Coryphantha vivipara var. neomexicana (Engelm.) Backeb.
• Escobaria neomexicana (Engelm.) Buxb.
• Mammillaria neomexicana (Engelm.) A.Nelson
• Mammillaria vivipara subvar. neomexicana Engelm.

• Escobaria vivipara (Nutt.) Buxb.
• Cactus viviparus Nutt. in Fraser
• Coryphantha vivipara (Nutt.) Britton & Rose
• Mammillaria radiosa var. vivipara (Nutt.) Schelle
• Mammillaria vivipara (Nutt.) Haw.
• Escobaria columnaris (Lahman)
• Coryphantha columnaris Lahman
• Escobaria neovivipara (Y.Itô)
• Coryphantha neovivipara Y.Itô
• Escobaria oklahomensis (Lahman) Buxb.
• Coryphantha oclahomensis Lahman
• Coryphantha oklahomensis Lahman
• Escobaria oclahomensis (Lahman) Buxb.
• Escobaria vivipara var. arizonica (Engelm.) D.R.Hunt
• Coryphantha arizonica (Engelm. in W.H.Brewer & S.Watson) Britton & Rose
• Coryphantha neovivipara var. arizonica (Engelm. in W.H.Brewer & S.Watson) Y.Itô
• Coryphantha vivipara var. arizonica (Engelm. in W.H.Brewer & S.Watson) W.T.Marshall
• Escobaria arizonica (Engelm. in W.H.Brewer & S.Watson) Buxb.
• Mammillaria arizonica Engelm. in W.H.Brewer & S.Watson
• Mammillaria radiosa var. arizonica (Engelm. in W.H.Brewer & S.Watson) K.Schum.
• Mammillaria radiosa f. arizonica (Engelm.) Schelle
• Mammillaria vivipara var. arizonica (Engelm. in W.H.Brewer & S.Watson) L.D.Benson
• Escobaria vivipara var. bisbeeana (Orcutt) D.R.Hunt
• Coryphantha bisbeeana Orcutt
• Coryphantha vivipara var. bisbeeana (Orcutt) L.D.Benson in L.D.Benson
• Coryphantha vivipara var. bisbeeana f. sonorensis P.C.Fisch.
• Coryphantha vivipara f. sonorensis P.C.Fisch.
• Escobaria bisbeeana (Orcutt) Borg
• Mammillaria bisbeeana (Orcutt) Orcutt ex Backeb.
• Escobaria vivipara var. buoflama (P.Fischer) N.P.Taylor
• Coryphantha vivipara var. buoflama P.C.Fisch.
• Escobaria vivipara var. kaibabensis (P.Fischer) N.P.Taylor
• Coryphantha vivipara var. kaibabensis P.C.Fisch.
• Escobaria vivipara var. neomexicana (Engelm.) Buxb. in Krainz
• Cactus neomexicanus (Engelm.) Small
• Cactus radiosus var. neomexicanus (Engelm.) J.M.Coult.
• Coryphantha neomexicana (Engelm.) Britton & Rose
• Coryphantha neovivipara var. neomexicana (Engelm.) Y.Itô
• Coryphantha radiosa var. neomexicana (Engelm.) Schelle
• Coryphantha vivipara var. neomexicana (Engelm.) Backeb.
• Escobaria neomexicana (Engelm.) Buxb.
• Mammillaria neomexicana (Engelm.) A.Nelson
• Mammillaria vivipara subvar. neomexicana Engelm.
• Escobaria vivipara var. radiosa (Engelm.) D.R.Hunt
• Cactus radiosus (Engelm.) J.M.Coult.
• Coryphantha fragrans Hester
• Coryphantha neovivipara var. radiosa (Engelm.) Y.Itô
• Coryphantha radiosa (Engelm.) Rydb.
• Coryphantha vivipara var. radiosa (Engelm.) Backeb.
• Echinocactus radiosus (Engelm.) Poselg.
• Escobaria radiosa (Engelm.) G.Frank
• Mammillaria radiosa Engelm.
• Mammillaria radiosa var. neomexicana (Engelm.) C.F.Först.
• Mammillaria vivipara subs. radiosa (Engelm.) Engelm.
• Mammillaria vivipara var. radiosa (Engelm.) Engelm.
• Neomammillaria radiosa (Engelm.) Rydb.
• Escobaria vivipara var. rosea (Clokey) D.R.Hunt
• Coryphantha alversonii var. exaltissima Wiegand & Backeb. in Backeb.
• Coryphantha rosea Clokey
• Coryphantha vivipara var. rosea (Clokey) L.D.Benson in L.D.Benson

• Escobaria vivipara var. deserti (Engelm. in W.H.Brewer & S.Watson) W.T.Marshall
• Cactus radiosus var. deserti (Engelm. in W.H.Brewer & S.Watson) J.M.Coult.
• Coryphantha chlorantha var. deserti (Engelm. in W.H.Brewer & S.Watson) Backeb.
• Coryphantha deserti (Engelm. in W.H.Brewer & S.Watson) Britton & Rose
• Coryphantha vivipara var. deserti (Engelm. in W.H.Brewer & S.Watson) W.T.Marshall
• Escobaria deserti (Engelm. in W.H.Brewer & S.Watson) Buxb.
• Mammillaria deserti Engelm. in W.H.Brewer & S.Watson
• Mammillaria radiosa var. deserti (Engelm. in W.H.Brewer & S.Watson) K.Schum.
• Mammillaria radiosa f. deserti (Engelm. in W.H.Brewer & S.Watson) Schelle
• Mammillaria vivipara var. deserti (Engelm. in W.H.Brewer & S.Watson) L.D.Benson
• Escobaria chlorantha (Engelm. ex Wheeler) Buxb.
• Cactus radiosus var. chloranthus (Engelm. ex Wheeler) J.M.Coult.
• Coryphantha chlorantha (Engelm. ex Wheeler) Britton & Rose
• Mammillaria chlorantha Engelm. ex Wheeler
• Mammillaria radiosa f. chlorantha (Engelm.) Schelle
• Mammillaria vivipara var. chlorantha (Engelm. ex Wheeler) L.D.Benson

: Escobaria viviparaSN|9953]]SN|9953]] is a small solitary or clumping cactus, some varieties forming colonies of over 200 stems. This species is the most widespread, abundant and variable member of the genus.
Remarks: The “neomexicana” variety is hardly distinguished from Escobaria viviparaSN|9953]]SN|9953]] var. arizonica in having an average higher spine number, and in having the spines nearly always white. It cannot be quantifiably distinguished from occasional similar plants of var. arizonica.
Stem: Usually more than 1/2 above ground ovoid, obovoid, or cylindric with age to 9.5 x 7cm.
Tubercles: Grooved, stiff or ± flaccid12-16.mm long; areolar glands absent.
Radial Spines: 20-30 per areole; white to cremy-white often with pinkish tips hardly distinguishable from centrals.
Central spines: 3-4 per areole, straight, spreading slightly longer than radials.
Flowers: Subapical, rose-pink to reddish pink, violet or magenta with darker midstripes.
Fruits: Green, exposed portions slowly turning dull brownish red, ovoid to obovoid, juicy; floral remnant persistent.
Seeds: Bright reddish brown.
Blooming season: Spring-late summer; fruiting 2-5 months after flowering.

: It comes from an area of summer rainfall. Keep drier in winter (but for outdoor cultivation it is very resistant to wet conditions, too). It needs good drainage. Very cold resistant, but the frost resistance varies a lot from clone to clone. It can easily be grown outdoors in areas with minimum winter temperatures of -15 -25°. It needs full sun to light shade.
Propagation: Seeds (no dormancy requirement, they germinate best at 25°C) or by offsets (if available), or occasionally grafted.