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Reason of the change into the species status
( by: Dieter Waldeis)
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By our observation (In contrast to Ch. Lemaire) The
napiform
root of E. kroenleinii is capable of integration with the
Hypocotyl
contrarily to
E. poselgeri that form several new shoots from the upper
parts of the
storage organ.
The napiform root is more
oblong and
light-brown in
juvenile-stage, later become
roundish approximately,
100-150 mm in diameter and black-brown.
Already this
characteristic prohibits the
synonymization with E.
poselgeri. Besides E. kroenleinii is stronger with more
branches and
differs from E. poselgeri for the
wool on the new shoots and for the
strongly fragrant
bloom with shorter
flower tube.
Fruit are smaller and
fast-maturing
with
cuticular convolution on the warty
head surface more
strongly marked.
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The statement of A. CARTIER that it can be
pollinated only with
pollen
of E. poselgeri is not correct .
Cultivation:
Do not
over water. They
need to be kept in a cool and dry place during
winter rest (at -5 +10°C) this is important for the
flowers as well as for their health. Without this cool winter
period they normally wont get any
buds.
It is quite frost hardy -7 (-10)° C.
Sun Exposure:
Best in
full or
partial sun exposure. |
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Photo of conspecific taxa,
varieties, forms and cultivars of
plants belonging to the
Echinocereus posselgeri
complex
(This
Taxon
has lots of synonyms
(
like many other cacti) whit several controversial varieties and subspecies
and comprises different forms):
Advertising
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Family:
Cactaceae (Cactus
Family)
Scientific name:
Echinocereus kroenleinii
(A. Cartier) W. Blum
& D. Waldeis stat nov. Table 1 and fig. 1
Basionym: Wilcoxia
kroenleinii
A. Cartier.‑
Succulentes 2 (2)‑. 2‑3,
1980.
Holotypus:
Mexico: Coahuila, leg. A. CARTIER ex. K. KUENZLER HK 379 [P]
Section:
Wilcoxia
Holotype: Mexico: San Luis
Potosi, East Huizache crossing, Depositated by D.WALDEIS 1988 [WU]
Synonyms:
- Echinocereus
poselgeri ssp. kroenleinii
(A. Cartier) M. Lange.‑ Kakt.
and. Sukk. 46(6): 138, 1995.
Distribution:
Mexiko: Coahuila, EI Amparo
nord to San Rafael, east to approximately Parras.
Elevation 1200‑1500
m Meereshöhe above sea level.
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