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Homalocephala Britton & Rose (1922)

Flat head
From the Greek words homalo, meaning even, flat and kephale, meaning head.
flat globular, 5.9 in (15 cm) high, to 11.8 in (30 cm) diameter, not clumping, numerous ribs, sharp edged
areoles white; 6–7 radial spines, straddling, backward bended, yellow, first reddish, partly hooped
1 central spine, to 2.3 in (6 cm) long, flat, broader
flowers with fringed rims, scarlet and orange, above pink to white, appear at the crown, ovary is felted
seeds shiny black

 
Highslide JS
 

Distribution

USA - New Mexico, Oklahoma, Texas
Mexico - Coahuila, Nuevo León, Tamaulipas
warm and arid areas

Growth period

full sunny and hot place
many moisture in the spring at the beginning of the growth, but absolutely dry during the summer
sensitive against to much moisture, keep the root neck dry

Winter period

light and dry at a minimum of 39 F (4°C)

Substrat

gravelly, complete mineralic with somewhat of loam
   
Homalocephala texensis (Hopffer) Britton & Rose (1922)
 
Highslide JS
  Highslide JS    
         
Highslide JS   Highslide JS    
         

Habitat

USA
New Mexico, Oklahoma, Texas
Mexico
Coahuila, Nuevo León, Tamaulipas
from sealevel to 3281 ft (1000 m) altitude

Description

named after its origin
5.9 in (15 cm) high, to 11.8 in (30 cm) Ø, simple
ribs 13–27, sharp edged, broad
areoles white
6–7 radial spines, 0.4–2 in (1–5 cm) long, dissimilar, partly flattened, straddling, backward bended,

first reddish, later yellow, hooped
1 central spine, circa 2.5 in (6.5 cm) long, 0.3 in (0.8 cm) broad, flatter and broader than the radial spines, downward directed
flowers to 2.3 in (6 cm) large, broad bell shaped, scarlet and orange, above pink to almost white or also with pink center
fruits 1.6 in (4 cm) large, only at the beginning juicy
seeds 2.5 mm large

Synonyms

Echinocactus texensis Hopffer (1842)

CITES

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

 

 

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