Echinocereus Engelmann (1848)

(Latin "echinus" = hedgehog; Latin "cereus" = waxy, candle)
a genus of columnar cacti, because of its spination and short columnar stems

short columnar to oblong to flat globular, soft fleshy, forming clumps
ribs very different, often less than10; spines partly spreaded, partly pectinate, colored
flowers large, last for a long time, calyx and tube acicular spined
stigma mostly green; fruits strong spined, juicy; seeds small to medium size, black

Highslide JS
 

Distribution

Mexico - northern of Mexico City to
USA - California, Utah, Wyoming and South Dakota
very warm steppes

Growth period

sunny and hot, but some differences are recommend
1. with green, less spined stems, are easy to cultivate,
    should be protected against blazing sun in spring, after the flower time placing on a sunny location
2. with stronger spined stems, are somewhat sensitive to too much water, carefully watering
    placing on a location with full sun exposure
permanent moisture is to avoid, first watering should be in March
then constant watering, but always after the soil is dried, constant slightly moisture is needed to form buds during the spring
in early summer enough watering, in high summer and early fall sparsely watering
from late fall on to early spring keep them absolutly dry

Winter period

very bright and absolutly dry with a minimum of 42–50 F (6–10°C)
shrink of the stems is usual
some species are cold hardy and it is possible to cultivate them outdoor the whole year around

Soil-mixture

minerally, nutritious and peremable to water
addition of quartz gravel, pumice, expanded slate and some humus
   
Echinocereus dasyacanthus Engelmann (1848)
 
Habitat - Big Bend
Brewster County, Texas, USA
       
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Habitat

USA
Texas, New Mexico
Mexico
Chihuahua, Coahuila
in 3940–4920 ft (1200–1500 m) altitude

Description

handsome, cylindrical, to 11.8 in (30 cm) high, to 4 in (10 cm) Ø, mostly simple
ribs 15–21
spines dense, same length, tips reddish to brownish to blackish
to 24 radial spines, fine, initially pink
3–8 central spines, somewhat stronger
flowers 3 in (7.5 cm) Ø, only around the middle of the day full opens, magnificent, shiny yellow
sepals on the outside with broad red-brown median
style with 14 thick, green stigma
ovary dense spiny
fruits globular, purple

Flowering time

April–June in cultivation
March–May in habitat
Synonyms Cereus dasyacanthus (Engelmann) Engelmann (1849)
Echinocereus pectinatus
var. dasyacanthus (Engelmann) N.P. Taylor (1984)
CITES Appendix II
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.
Pictures with courtesy by © Rob Romero, Tucson, Arizona made available.

 

 

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