Gymnocactus Backeberg (1938)

(Greek "gymnos" = naked; Latin "cactus" = cactus)
naked (fruits) cactus

small, globular, partly clumping, with small tubercles, apex with bright wool
to 20 spines, radiant, bright
flowers appears on a longish areole, small, purple, pink or white, ovary bare
seeds dull black

Highslide JS


north-east Mexico to central Mexico - Zacatecas to Hidalgo
very warm steppes

Growth period

bright and warm, not in full sun, somewhat partial shade
somewhat sensitive to too much moisture
watering only after the soil is complete dried

Winter period

dry and bright at 46–50°F (8–10°C)
to form flowers requires the early blooming plants in late winter
and early spring somewhat more moisture


minerally and permeable to water
Gymnocactus beguinii (F. A. C. Weber ex K. Schumann) C. Backeberg (1961) (nom. illeg.)
Highslide JS
  Highslide JS   Highslide JS


Coahulia, San Luis Potosí, Nuevo León - San Juan
lowland and mountains, always in high altitudes


named after Abbot Beguin
globular, 3.2 in (8 cm) Ø, later longish, to 5.9 in (15 cm) high, simple, blue-green
ribs seperated in tubercles
areoles initially stronger with white wool
usually 12 spines, glassy white, to 0.7 in (1.7 cm) long

1 central spine to 1.2 in (3 cm) long, upper third or upper half dark brown to black
flowers to 1.4 in (3.5 cm) long, violet, inside brownish

Flowerin time

May in cultivation
February–May in habitat
2–3 years from seed


Echinocactus beguinii F. A. C. Weber ex K. Schumann (1898) (nom. illeg.)
Neolloydia beguinii
(F. A. C. Weber ex K. Schumann) Britton & Rose (1922) (nom. illeg.)
Neolloydia smithii var. beguinii (F. A. C. Weber ex K. Schumann) Kladiwa & Fittkau (1971) (nom. illeg.)
Echinomastus erectocentrus (J. M. Coulter) Britton & Rose (1923)
CITES Appendix II since 01.July 1975; Appendix I since 11. June 1992
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.