Gymnocalycium gibbosum f. cristatum

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Since 4 Aug 2013

Gymnocalycium gibbosum f. cristatum hort.
"forma cristata"
Family: CACTACEAE

Accepted Scientific Name: Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler
Taschenb. Cactuslieb. 2: 124 (1844); et: Abbild. Beschr. Cact. 2: sub t. 1. 1845 Mittler

Gymnocalycium gibbosum f. cristatum Photo by: Valentino Vallicelli

Origin and Habitat: Garden origin (Nursery produced cultivar)

Synonyms:

Gymnocalycium gibbosum f. cristatum hort.

See all synonyms of Gymnocalycium gibbosum

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Accepted name in llifle Database:
Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler
Taschenb. Cactuslieb. 2: 124 (1844); et: Abbild. Beschr. Cact. 2: sub t. 1. 1845
Synonymy: 30

Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler

Cactus gibbosus Haw.
Cereus gibbosus (Haw.) Pfeiff.
Echinocactus gibbosus (Haw.) DC.

Gymnocalycium gibbosum var. brachypetalum (Speg.) Papsch

Echinocactus brachypetalus (Speg.) Werderm. in Backeb.
Gymnocalycium brachypetalum Speg.

Gymnocalycium gibbosum f. cerebriformis (Speg.) Papsch

Echinocactus gibbosus var. cerebriformis Speg.

Gymnocalycium gibbosum var. chubutense (Speg.) Papsch

Echinocactus gibbosus var. chubutensis
Gymnocalycium chubutense (Speg.) Speg.

Gymnocalycium gibbosum f. cristatum hort.
Gymnocalycium gibbosum var. gerardii Boed.

Gymnocalycium gerardii (Boed.) Y.Itô

Gymnocalycium gibbosum var. leonense (Hildm. ex K.Schum.) Borg

Echinocactus gibbosus var. leonensis Hildm. ex K.Schum.
Echinocactus gibbosus f. leonensis (Hildm. ex K.Schum.) Schelle

Gymnocalycium gibbosum var. leucacanthum (Rümpler) Borg

Echinocactus gibbosus var. leucacanthus Rümpler
Echinocactus gibbosus f. leucacanthus (Rümpler) Schelle

Gymnocalycium gibbosum f. longispinum hort.
Gymnocalycium gibbosum var. nigrum Backeb.
Gymnocalycium gibbosum var. nobile (Haw.) Y.Itô

Cactus nobilis Haw.
Echinocactus gibbosus var. nobilis (Haw.) K.Schum.
Echinocactus gibbosus f. nobilis (Haw.) Schelle

Gymnocalycium gibbosum var. schlumbergeri (Rümpler) Borg

Echinocactus gibbosus var. schlumbergeri Rümpler
Echinocactus gibbosus f. schlumbergeri (Rümpler) Schelle

Accepted name in llifle Database:
Gymnocalycium gibbosum subs. borthii (Koop ex H.Till) G.J.Charles
Cactaceae Syst. Init. 20: 18. 2005 [ Nov 2005 ]
Synonymy: 5

Gymnocalycium gibbosum subs. borthii (Koop ex H.Till) G.J.Charles

Gymnocalycium borthii Koop ex H.Till

Gymnocalycium borthii subs. kokori Halda & Milt
Gymnocalycium borthii subs. nogolense Neuhuber
Gymnocalycium borthii var. viridis Neuhuber

Accepted name in llifle Database:
Gymnocalycium gibbosum subs. ferdinandii Halda, Malina & Milt
Acta Mus. Richnov., Sect. Nat. 9(1): 61 (fig. 71). 2002

Accepted name in llifle Database:
Gymnocalycium gibbosum subs. ferox (Labour. ex Rümpler) Papsch
Gymnocalycium 9(4): 201 (1996)
Synonymy: 4

Gymnocalycium gibbosum subs. ferox (Labour. ex Rümpler) Papsch

Echinocactus gibbosus var. ferox Labour. ex Rümpler
Echinocactus gibbosus f. ferox (Labour. ex Rümpler) Schelle
Gymnocalycium gibbosum var. ferox (Labour. ex Rümpler) Borg

Accepted name in llifle Database:
Gymnocalycium gibbosum subs. gastonii Halda & Milt
Acta Mus. Richnov., Sect. Nat. 9(1): 62 (fig. 72). 2002

Accepted name in llifle Database:
Gymnocalycium gibbosum subs. radekii Halda & Milt
Acta Mus. Richnov., Sect. Nat. 9(1): 63 (-64; fig. 73). 2002

Accepted name in llifle Database:
Gymnocalycium gibbosum subs. radovanii Halda & Milt
Acta Mus. Richnov., Sect. Nat. 13(1): 5 (-7; figs.). 2006

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Description: This is the crested clone of Gymnocalycium gibbosumSN|8057]]SN|8057]]. It is one of the more fascinating crested gymnocalyciums sought after by cactus impassioned. This cultivar is stable and remain crested.
The standard species is a low growing solitary cactus.
Stem: Deep glaucous-green, dark olive green, brown or grey-black, discoidal that became elonged with time 10-25 cm tall, up to 12 cm in diameter, the apex is slightly woolly.
Ribs: 10-16 straight, divided in well distinct angular ribs.
Areoles: Whitish-grey, elonged.
Radial spines: 5-7 (-9) 20-25 mm long slightly bent against the plants body, clear brown with a darker base when young, that became whitish-grey with a black base as they age.
Central spines: 0-2 very similar to the radials.
Flowers: Infundibuliform in the nearest periphery just around the apex 45-60 mm long, 60-65 in diameter. Tepals ivory white with a brownish mid rib or occasionally reddish, throat greenish with a basal reddish area. Style white-greenish, stigma white. Anthers cream coloured.
Fruits: Globose or fusiform, 20-40 mm long green with white bordered scales.
Remarks: Seems to be a pretty variable plant.

Subspecies, varieties, forms and cultivars of plants belonging to the Gymnocalycium gibbosum group

Gymnocalycium gibbosum has lots of synonyms (like many other Gymnocalyciums) 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:

Gymnocalycium gibbosum (Haw.) Pfeiff. ex Mittler: It is a small solitary cactus with deep glaucous-green to grey-black, discoidal stem up to 12 cm in diameter. Flowers in the nearest periphery just around the apex ivory white with a brownish mid rib or occasionally reddish, throat greenish with a basal reddish area.
Gymnocalycium gibbosum subs. borthii (Koop ex H.Till) G.J.Charles: has dark green, round, low ribs with tubercles, large white flowers. Distribution: Quines, San Luis, Argentina
Gymnocalycium gibbosum var. brachypetalum (Speg.) Papsch: has grey-black body and large white flowers. Distribution: La Pampa and Río Negro Argentina.
Gymnocalycium gibbosum var. chubutense (Speg.) Papsch: has dark green to nearly black stem and cream-white or pinkish flowers. Chubut, Peninsula Valdes, Argentina
Gymnocalycium gibbosum f. cristatum hort.: crested form.
Gymnocalycium gibbosum subs. ferox (Labour. ex Rümpler) Papsch: has very robust radial spines and no centrals. Distribution Chubut province.
Gymnocalycium gibbosum f. longispinum hort.: The form “longispinum” has longer and stiffer spines but is practically identical to the normal form in stem and flowers characteristics. (Only known in cultivation)
Gymnocalycium gibbosum var. nigrum Backeb.: has very dark green to almost black stems.
Gymnocalycium gibbosum var. nobile (Haw.) Y.Itô: This variety is easily recognized by the very dark olive-green body and the strong, more numerous, longer, overlapping, spines that are white with a darker base.

Bibliography: Major references and further lectures
1) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
2) James Cullen, Sabina G. Knees, H. Suzanne Cubey "The European Garden Flora Flowering Plants: A Manual for the Identification of Plants Cultivated in Europe, Both Out-of-Doors and Under Glass" Cambridge University Press, 11/Aug/2011
3) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006
4) N. L. Britton, J. N. Rose “The Cactaceae. Descriptions and Illustrations of Plants of the Cactus Family.” Volume 4, The Carnegie Institution of Washington, Washington 1923
5) Curt Backeberg “Die Cactaceae: Handbuch der Kakteenkunde” Gustav Fischer Verlag, Stuttgart New York 1982–1985