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  Notocactus macracanthus
(Syn: Wigginsia macracantha )
CACTUSPEDIA       

 


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.

 

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.

Notes:
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)

 

This species  (previously considered independent )  is now included as many other in Parodia sellowii.

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
 

Scientific name: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")

Nowadays regarded as: 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.
 

Synonyms

  • 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.
    Basionym:
  • Notocactus sellowii f. macrocanthus (Arechavaleta ) N.Gerloff
    In
    : Internoto 14 (2): 72 (1993)
  • 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


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):

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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This old page has been moved! Click the link next on the right to enter the new Enciclopedia of Cacti. We hope you find this new site informative and useful.

The Encyclopedia of Cacti