Mammillaria heyderi var. bullingtoniana

Castetter

Cact. Succ. J. (Los Angeles) 48: 138, figs. 1, 2. 1976.

Common names: Cream cactus
Illustrated
Treatment appears in FNA Volume 4. Treatment on page 256. Mentioned on page 232, 252, 255, 257.

Stems 5–11 × 5–12(–15) cm; tubercles 11–25 × 4–8 mm. Spines usually 10–14 per areole; radial spines usually 10–14 per areole, abaxial radial spines 9–15 mm diam; central spines, when present, 0.35–0.45 mm diam. Flowers 2.2–3.3 × 1.7–3 cm. 2n = 22.


Phenology: Flowering Mar–May; fruiting Nov–May.
Habitat: Chihuahuan desert scrub, desert grasslands, lower edge of oak zone
Elevation: 1200-2100 m

Distribution

V4 470-distribution-map.gif

Ariz., N.Mex., Mexico (Chihuahua).

Discussion

L. D. Benson’s (1982) concepts of Mammillaria gummifera varieties all included material of M. heyderi var. bullingtoniana. The stems, spines, and tubercles of var. bullingtoniana average about one-fourth larger than var. heyderi in all dimensions.

Selected References

None.

Lower Taxa

None.
Allan D. Zimmerman +  and Bruce D. Parfitt +
Castetter +
Cream cactus +
Ariz. +, N.Mex. +  and Mexico (Chihuahua). +
1200-2100 m +
Chihuahuan desert scrub, desert grasslands, lower edge of oak zone +
Flowering Mar–May +  and fruiting Nov–May. +
Cact. Succ. J. (Los Angeles) +
Illustrated +
Chilita +, Cochemiea +, Dolichothele +, Ebnerella +, Leptocladodia +, Neomammillaria +  and Phellosperma +
Mammillaria heyderi var. bullingtoniana +
Mammillaria heyderi +
variety +