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Notocactus macracanthus (Parodia sellowii
var.
macracantha)
This plant is recognizable for the
pale green stem with 12 to 14 ribs and a very few (usually 3)
strong and long spines of which one central ; flowers are large ,
pale yellow.
This species (previously considered independent ) is now
included as many other in Parodia sellowii.
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Description: Usually solitary.
Stem: Bright or dark green, globose to short cylindrical up to 20
cm tall, 15 cm in diameter. The apex is depressed and filled with
whitish-grey wool.
Ribs: About 12 to 14 at maturity well marked and sharp whit
scarcely prominent chinned tubercles. The crest of the ribs typically
take a purple red colour in full sun.
Areoles: Well spaced, woolly, recessed 15-20 mm apart.
Spines: Few, (usually only three) longer and stronger than in the
standar species yellowish, sturdy, about 20-25 mm long curved down or
backward of which 1 radial spine slightly heavier but not very different
from the the radials.
Flowers: Large, lemon yellow with glossy petals to about 5 cm in
diameter and stand near the top, decorated
with about 8 to 10 red pistil lobes which emphasize the yellow of the
petals. The buds are tomentose.
Blooming season: They bloom annually about in June-July.
Fruits: Fleshy reddish to purple about 10 mm long.
Seeds: 1 mm long black.
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Cultivation:
It is easy to grow. They like a warm bright location, does great in
partial shade avoid full sun. They need good drainage and prefer a
neutral to slightly acidic compost with plenty of extra grit. Water and
feed during the summer. Best if watered with rain water. Keep above 0°C
and rather dry in winter, rot easily if the substrate is wet and cold,
tends to lose its roots in winter.
Propagation: Seeds
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Family:
Cactaceae (Cactus
Family)
Conservation status:
Listed
in
CITES Appendix II
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Notocacts macracanthus
(Arech.) G. Schäfer,
In: Kakteen Sukkulenten (Dresden), 14 (1-4): 59
( publ. 1980), without exact basionym page: 1979
(often mispelled "macrocanthus" , "macroacanthus"
or "macra-canthus")
Accepted
Scientific name: Parodia sellowii
(Link & Otto) D.R. Hunt1997
Etymology: The species name "macracanthus"
comes from the Greek words macros
(μακρος)= big +
acantha (ακανθα)=
spine; In reference to the distinctive strong spines.
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Synonyms:
-
Basionym
:
Echinocactus (Malacocarpus)
Sellowii
v.
macrocanthus
Arechavaleta
In:
Flora Uruguaya, Bd.2: 230-232 (1905)
Epitypus: D.J. van Vliet DV29/a (Uruguay), hinterleft im Herbar des
Palmengartens Frankfurt am Main/D.
-
Notocactus sellowii
f.
macrocanthus
(Arechavaleta )
N.Gerloff
In:
Internoto 14 (2): 72 (1993)
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Malacocarpus
macracanthus
(Arechavaleta)
Herter 1943
-
Notocactus
macrocanthus
(Arechavaleta)
G.Schaefer 1980
-
Malacocarpus sellowii
var.
macracanthus
(Arechavaleta)
Y.Ito 1957
-
Wigginsiaa macrocantha
(Arechavaleta)
D.M.Porter 1964
-
Wigginsia sellowii
var.
macracantha
(Arechavaleta)
F.Ritter 1979
-
Notocactus sellowii
var.
macracanthus
(Arechavaleta)
S.Theunissen 1981
- Notocactus sellowii f.
macrocanthus
(Arech.)
Gerloff, 1993
- Parodia macracantha
var. macracantha
-
Echinocactus
macracanthus
NOTE: All species of genera
Notocactus, Wigginsia and Malacocarpus
have recently been transferred to genus Parodia, so the
names of several plants previously accepted are now all synonyms of
Parodia sellowii.
(see list of synonyms on
the page bottom)
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The flowers are
lemon yellow with glossy petals
and very showy.
The stigma with about 8 to 10 red purple lobes emphasize the yellow of
the petals.
Photo of conspecific taxa, varieties, forms and cultivars of
plants belonging to the Parodia
sellowii
complex
(This
Taxon has lots of
synonyms ( like many other
cacti) whit several controversial
varieties and subspecies and comprises a multitude of different
forms, but where each form is linked to others by populations of plants
with intermediate characteristics):
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Other synonym of Parodia
sellowii: Echinocactus pauciareolatus, Malacocarpus
pauciareolatus, Wigginsia pauciareolata, Wigginsia sessiliflora var.
pauciareolata, Notocactus pauciareolatus, Notocactus macrogonus,
Malacocarpus macrogonus, Malacocarpus macrogonus, Wigginsia macrogona,
Wigginsia rubricostata, Echinocactus macrogonus, Wigginsia sessiliflora,
Malacocarpus sellowi var. macrocanthus, Echinocactus sellowii var.
macrogonus, Malacocarpus stegmannii, Notocactus sessiliflorus, Wigginsia
vorwerkiana, Malacocarpus vorwerkianus, Echinocactus vorwerkianus,
Notocactus sessiliflorus var. stegmannii, Echinocactus sessiliflorus,
Wigginsia stegmannii, Parodia paucicostata, Malacocarpus sessiliflorus,
Notocactus sessiliflorus, Malacocarpus corynodes, Notocactus vorwerkianus,
Notocactus rubricostatus, Notocactus stegmannii, Notocactus erinaceus,
Wigginsia macrocantha, Echinocactus acuatus var. corynodes, Echinocactus
corynodes, Notocactus corynodes, Echinocactus courantii, Echinocactus
acuatus var. sellowii, Notocactus courantii, Notocactus acuatus
var. corynodes, Echinocactus sellowii var. typicus, Wigginsia leucocarpa,
Echinocactus sellowii var. macracanthus, Malacocarpus macracanthus,
Notocactus sellowii, Notocactus acuatus var. leucocarpus, Wigginsia
corynodes, Malacocarpus leucocarpus, Echinocactus sellowii var. courantii,
Echinocactus leucocarpus, Wigginsia fricii, Notocactus fricii, Malacocarpus
fricii, Echinocactus fricii, Malacocarpus sellowii var. courantii, Wigginsia
courantii, Notocactus leucocarpus
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Cultivation
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