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 davisii A. D. Houghton (1931)
 
SB426 - Brewster County,
New Mexico, USA
       
Highslide JS   Highslide JS   Highslide JS
         

Field number

SB426 - collected by Steven Brack

Habitat

USA
Texas - Brewster County, southern of Marathon
in 3940–4270 ft (1200–1300 m) altitude

Description

very small, dark green  
ribs 6–7, tubercular
9–12 radial spines, the upper 7 of it initially reddish black, the lower ones whiteish
pectinate, mostly straight, the other ones somewhat bended
flowers 0.8 in (2 cm) Ø, green-yellowish

Flowering time

April–May in cultivation
February–March in habitat
Comment Echinocereus davisii SB426 is with rain protection to about -4 F (- 20°C) cold hardy.
Synonyms Echinocereus viridiflorus var. davisii (A. D. Houghton) W. T. Marshall (1941)
Echinocereus viridiflorus
fa. davisii (A. D. Houghton) H. Krainz (1967)
Echinocereus viridiflorus
ssp. davisii (A. D. Houghton) N. P. Taylor (1997)
CITES Appendix II
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.

 

 

 

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