|
Echinofossulocactus penthacantus
|
Description:
It is a globular cactus which became elongate when old , even though
usually solitary this species is one of the few members of the genus
that can put forth basal shoots. It does so as a young plant, becoming
sometime densely branched. Stems rather small up to 10 cm in diameter,
10 (20) cm tall with about 27 corrugated, sharp-edged ribs, swollen
where the areoles grow. The latter are round and thickly felted around
the apex, later becoming almost bare.
Spines: "pentacanthus" means five spined, of this 5 spines
there are 3 major on the upper part of the areoles: two are conical and
curved upward while the central spine is flattened, yellowish or pinkish
, about 2 (4) cm long and 2 (4) mm wide and 2 (4) small spine on the
lower part of the arele.
Flowers: 1-2 cm long can be up to 3-4cm in diameter. E.
obvallatus has white or pale yellow flowers with pink mid-veins and a
greenish base. The plants known as Stenocactus pentacanthus have long
lasting flowers in early spring.
|
|
|
The name 'pentacanthus' means five spined. |
|
|
Cultivation: Small growing and easy to to
care
in normal and very drained
cactus compost and very willing to flower,
Because of it’s small size makes
a great potted plant specimen, great for
beginning collectors, water sparingly and allow to dry between watering,
needs good drainage. Watering should be curtailed during the winter
months. Full sun but is tolerant and prefers light shade during the hot
Summer months. And provide very good
ventilation. Frost Tolerance: Hardy to -
5°C if kept dry.
Propagation: Seeds
(usually) or by the shoots of adult plants (if available). It tillers
more readily than most other species.
|
Advertising
|
|
|
|
Family:
Cactaceae (Cactus
Family)
Scientific name:
Stenocactus
obvallatus
(A.P. de Candolle) A. Berger 1929
TAXONOMICAL NOTE: E.
caespitosus nowadays is not considered a distinct species or
variety but only one of the variable
phenotypes
of the
clinal
species E. obvallatus.
Tribe: Cacteae -- Subtribe: Echinocactinae
Origin: Mexico (Tamaulipas, Queretaro).
Synonyms:
-
Echinofossulocactus obvallatus (A. P. de Candolle) Lawrence
1841
= Stenocactus obvallatus (A.P. de Candolle) A. Berger 1929
= Echinocactus obvallatus A. P. de Candolle 1828
= Brittonrosea obvallata
-
Echinofossulocactus caespitosus Backeberg 1950
-
Echinofossulocactus pentacanthus (Lemaire) Britton et Rose
1922
= Echinocactus pentacanthus Lemaire 1838
= Echinofossulocactus pentacanthus,
= Brittonrosea pentacantha
= Stenocactus pentacanthus (Lemaire) A. Berger ex A. W. Hill
1933
= Echinocactus anfractuosus var. pentacanthus
|
|
The name 'pentacanthus' means five spined.
Photo of conspecific taxa,
varieties, forms and cultivars of
plants belonging to the
Echinofossulocactus obvallatus complex
(This
Taxon
has lots of synonyms
(like most Echinofossulocactus) whit several controversial varieties and subspecies):
|
|