Cereus (Herrmann) Miller (1754)

(Latin "cereus" = waxy, candle)
because of the upright, columnar growth habit of many species

wax torch cactus
arborescent or shrubby, ribs vary in length and number
number of spines also varies
long tubular flowers, slightly scaly, white to reddish
fruits oblong, smooth, yellow-green or red
seeds rather large, black, often shiny

Highslide JS


south America - Columbia, Venezuela, Tobago, Suriname, Brazil,
Uruguay, Paraguay, Argentina, Bolivia, Peru
steppes and mountains

Growth period

warm and full sun
a location outdoor is very favorable
not too little watering and fertilize occasionally with a cactus fertilizer

Winter period

light and slightly moist at 6–12°C (42–53°F)


humos, nutrient-rich and porous
Cereus aethiops H. Haworth (1830)
Highslide JS
  Highslide JS    


Mendoza to Rio Negro


named after the dark coloring (Etiopians)
up to 2 m (6.5 ft) tall, adult plants branched, with blue epidermis
shoots 3–4 cm (1.2–1.6 in) Ø; ribs 8, bumpy
8–12 radial spines, 0,6–1,1 cm (0.2–0.4 in) long, predominantly black, below white
4 center spines, usually more than 2 cm (0.8 in) long, strong

flowers up to 20 cm (7.8 in) long, white to slightly pink, outside bluish green
fruits brownish


Piptanthocereus aethiops (H. Haworth) F. Ritter (1980) (incorrect name)


Appendix II
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.