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Gymnocalycium megalothelon (Sencke ex K.Schum.) Britton & Rose
Cactaceae (Britton & Rose) iii. 162. 1922 Note: as ''megalothelos'' (a.k.a. megalothele )
Family: CACTACEAE

Accepted Scientific Name: Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler
Taschenb. Cactuslieb. 2ed.: 48 +124 (1844) [ et Pfeiff. in Pfeiff. & Otto, Abbild. & Beschr. Bluh. Cact. ii. sub t. 1 (1845), in adnot. ] Mittler

Gymnocalycium megalothelon Photo by: Valentino Vallicelli
The first peculiarity of this nice plant is the beautiful double petaled candid white flower. The second distinctive characteristic of G. megalothele is that it is self-fertile and it produce easily fruit without the need of cross pollination.

Synonyms:

See all synonyms of Gymnocalycium denudatum
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Accepted name in llifle Database:
Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler
Taschenb. Cactuslieb. 2ed.: 48 +124 (1844) [ et Pfeiff. in Pfeiff. & Otto, Abbild. & Beschr. Bluh. Cact. ii. sub t. 1 (1845), in adnot. ]
Synonymy: 14 Accepted name in llifle Database:
Gymnocalycium denudatum subs. angelae (Mereg.) Prestlé
Gymnocalycium 17(2): 577. 2004 [May 2004]
Synonymy: 2 Accepted name in llifle Database:
Gymnocalycium denudatum subs. angulatum Prestlé
Gymnocalycium 17(2):573, 2004

Accepted name in llifle Database:
Gymnocalycium denudatum var. anisitsii hort., Kreuz.
Verzeichnis Amer. Sukk. Rev. Syst. Kakteen 13, 1935

Accepted name in llifle Database:
Gymnocalycium denudatum var. argentinense F.Haage
Kakteen-Peisverzeichnis: 14, 1928

Accepted name in llifle Database:
Gymnocalycium denudatum var. argentinense Y.Itô
Cactaceae [Itô] 378, 1981 later omonym, nom. illeg. (Art. 53.1)

Accepted name in llifle Database:
Gymnocalycium denudatum var. backebergii Pazout
Friciana 3(15): 6, 1963, nom. inval. (Art. 37.1)

Accepted name in llifle Database:
Gymnocalycium denudatum var. boliviensis hort.
Catalog name. Pubbl. in Schneekloth List

Accepted name in llifle Database:
Gymnocalycium denudatum var. brachyanthum hort.
Catalog name. Pubbl. in Schneekloth List

Accepted name in llifle Database:
Gymnocalycium denudatum var. brasiliensis hort.
Catalog name. Pubbl. in Uhlig seed list 1992/93

Accepted name in llifle Database:
Gymnocalycium denudatum var. flavispinum (Mundt in Schelle) Y.Itô
170, 1957 nom. inval. (Art. 33.2)
Synonymy: 2 Accepted name in llifle Database:
Gymnocalycium denudatum var. grandiflorum hort.
Catalog name. Pubbl. in Schneekloth List

Accepted name in llifle Database:
Gymnocalycium denudatum var. montanum subv. staminosum Prestlé
Manuskript und Protokoll, Eugendorf n.n. 1996

Accepted name in llifle Database:
Gymnocalycium denudatum var. montanum Prestlé
Manual (Gray), ed. 2. n.n. 1996

Accepted name in llifle Database:
Gymnocalycium denudatum subs. necopinum Prestlé
17(2):575, 2004

Accepted name in llifle Database:
Gymnocalycium denudatum var. necopinum Prestlé
n.n. 1996

Accepted name in llifle Database:
Gymnocalycium denudatum var. pentacanthum hort.
published in Uhlig Catalogue n.n. (= horstii?)

Accepted name in llifle Database:
Gymnocalycium denudatum var. roseum Hildm.
Atlas Kaktusu 15, 1986

Accepted name in llifle Database:
Gymnocalycium denudatum var. terwinianum hort.
Catalogname, published in Schneekloth-Liste

Cultivars (1):
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Subspecies, varieties, forms and cultivars of plants belonging to the Gymnocalycium denudatum group

  • Gymnocalycium denudatum (Link & Otto) Pfeiff. ex Mittler: has a globular usually unbranched stem with glossy dark-green epidermis and 5(-8) flat, rounded ribs, with poorly developed tubercles. Distribution: Brazil (Rio Grande do Sul), Argentina (Corrientes, Misiones) Paraguay [possibly] and Uruguay.
  • Gymnocalycium denudatum subs. angelae (Mereg.) Prestlé: has smaller flowers with red throat and a more opaque and pale green colour of the stem. Distribution: San Martin department, Corrientes, Argentina (It is separated from Gymnocalycium denudatum by hundreds of kilometres).
  • Gymnocalycium denudatum cv. Jan Suba hort.: is said to be an hybrid between Gymnocalycium denudatum and Gymnocalycium baldianum. It has the stem and spination of the former and the lovely red or deep pink flower colour of the latter.
  • Gymnocalycium megalothelon (Sencke ex K.Schum.) Britton & Rose: is a solitary flattened-globular cactus with a five ribbed appearance and more raised tubercles. The flowers are white and double petaled. Distribution: Argentina (San Luis).

13019 cactus-art Cactus Art
Gymnocalycium megalothelon Photo by: Cactus Art
13020 cactus-art Cactus Art
Gymnocalycium megalothelon Photo by: Cactus Art

13021 cactus-art Cactus Art
Gymnocalycium megalothelon Photo by: Cactus Art
13022 cactus-art Cactus Art
Gymnocalycium megalothelon Photo by: Cactus Art

13023 cactus-art Cactus Art
Gymnocalycium megalothelon Photo by: Cactus Art
13024 cactus-art Cactus Art
Gymnocalycium megalothelon Photo by: Cactus Art


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