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

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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 engelmannii (Parry ex Engelmann) Lemaire (1868)
 
Habitat - Watermann Mountains
Pima County, Arizona, USA
 
May 2009
 
April 2011
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        Habitat - Vulture Mountains
Maricopa County, Arizona, USA
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Habitat

USA
Arizona, Kalifornien, Nevada, Utah
Mexico
Sonora, northern Baja California
in 985–7870 ft (300–2400 m) altitude

Description

named after Dr. G. Engelmann
to 17.7 in (45 cm) high, to 2.4 in (6 cm) Ø, forming clusters,
numerous single stems
10–13 ribs, flat, unclearly tubercled
spine color very variabel
about 10 radial spines, stiff, whiteish with a brown tip
2–6 central spines, stiff, more brown, the longest up to 2.6 in (6.5 cm) long
flowers 2–3.1 in (5–8 cm) long, to 3 in (7.5 cm) Ø, sidewise near the apex, dark crimson,
style white with 10–15 emerald green stigma
fruits strong spiny
seeds dull black
Flowering time April–June in cultivation
March–April in habitat
8–9 years from seed
Synonyms Cereus engelmannii Parry ex Engelmann (1852)
CITES Appendix II
 
Description of "Kakteen von A bis Z" by Walter Haage with courtesy by Kakteen-Haage made available.
Pictures 9 with courtesy by © Rob Romero, Tucson, Arizona made available.

 

 

 

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