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Cephalocereus Pfeiffer (1838)

(Greek "kephale" = head, and Cereus Latin = waxy, candle)
a genus of columnar cacti, because of these columnar cacti formed cephalien

at the head flower forming Cereus
columns tall, few branched, stemm ribbed
areolae with woll felt , with spines, hairs and bristles
cephalium lateral, first appears at about 6 m (19.7 ft) tall plants, light brown to yellow, shaggy
flowers short, funnel shaped, radial
fruits bald or scaly and hairy, fleshy
seeds smooth or bulging, shiny black

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Distribution

Mexico - Hidalgo, Guanajuato
warm steppes

Growth period

bright, sunny and humid heat, in the spring to protect something from the blazing sun
prevent pollution of the hair to a position under glass is required
because of the high moisture sensitivity is watered sparingly from below
This species is very sensitive to moisture in cool weather
in midsummer a growth break grant by dryness

Winter period

bright and dry at 12–15°C (53–59°F), never for a long time under 10°C (50°F)

Soil-mixture

nutrient-rich, well-permeable and low in humus
   
Cephalocereus senilis (H. Haworth) L. Pfeiffer (1838)
 
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Habitat

Mexico
Guanajuato, Hidalgo, Barranca Venados and Barranca de Metztitlan
the area is also known as the "Valley of the old men"

Description

senile (hairy) Cephalocereus, known as "old man"
up to15 m (49 ft) tall, usually no branches
light green, white hairy later gray
ribs 20–30; areoles dense
3–5 spines, up to 4 cm (1.6 in) long, yellowish or gray

20–30 hairs, long, intertwined, mostly downward, white to gray
cephalium from about 6 m (19.7 ft) tall, first unilaterally,
later round the trunk ,wooly, gray
flowers 7,5 cm (2.9 in) Ø, from cephalium, pale yellow,
tube 5 cm (1.9 in) long, ± pink hairy; ovary hairy, stigma cream
fruits and fruit flesh red

Synonyms

Cactus senilis H. Haworth (1824)
Cereus senilis
(H. Haworth) A. P. De Candolle (1828)
Pilocereus senilis (H. Haworth) C. Lemaire (1839)

CITES

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

 

 

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