Gymnocalycium Pfeiffer ex Mittler (1844)

(Greek gymnos = naked; Greek kalyx = calyx)
naked flower calyx
because of the calyx without spines, bristles and hairs

usually flat globular, in age some thick columnar, very different sizes, simple or clumping
ribs 20 or less; spines adjacent or outspread, thin to very strong
flowers small short to large funnel shaped, often white or white with a red center, however also yellow or red,
calyx bare and scaly; fruits and seeds very different

Highslide JS
 

Distribution

south America - Bolivia, Paraguay, south Brazil to Argentinia
almost complete south America eastern of the Cordilleras
steppes and mountains

Growth period

warm and partly shady, full sun is to avoid, temporarily a location outdoor is possible
plants with stronger spines is possible to get more direct sunlight
from early summer on abundant watering, but permanent moisture is to avoid
especially at warm weather the plants require more moisture

Winter period

bright and cool, not to dry, at 6–12°C (42–53°F), as possible not colder than 5°C (41°F)
species which origin in mountains occasionally somewhat colder

Soil-mixture

nutrient rich, very permeable to water with addition of peat
   
Gymnocalycium quehlianum (F. Haage ex Quehl) Hosseus (1926)
 
Highslide JS
  Highslide JS   Highslide JS
         
JL44 - Cuesta del Aguila, Cordoba,
Argentinia
       
Highslide JS   Highslide JS   Highslide JS
         

Field number

JL44 - collected by Jacques Lambert

Habitat

Argentinia
Córdoba - in 1640–4920 ft (500–1500 m) altitude
JL44 - in 2300 ft (700 m) altitude

Description

named to honor of Leopold Quehl
flat globular, 2.7 in (7 cm) or more in diameter, red to greenish-gray, with thick tap root
ribs ca. 11, seperated to flat tubercles, tubercle on the flat rib is roundish to chin shaped beaked
5 radial spines, to 0.2 in (0.5 cm) long, spreading, adjacent, transparent, horn colored, base reddish
central spine is absent
flowers to 2.3 in (6 cm) long, slimly tube shaped, inside clean white, reddish center
seeds hat shaped, brown

Synonyms

Echinocactus quehlianus F. Haage ex Quehl (1899)
Echinocactus platensis
var. quehlianus (F. Haage ex Quehl) Spegazzini (1905)
Gymnocalycium platensis
var. quehlianum (F. Haage) Y. Ito (1957)
CITES Appendix II
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.

 

 

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