Origin and Habitat: Coastal Chile (Approx from Valparaiso to Maule)
Habitat: Grows on rocky outcrop on costal terraces cliffs, slopes, often hanging from rocks, from areas with very arid Mediterranean climate to areas of transition between Mediterranean climate and humid forest.

• Neoporteria clavata f. parviflora F.Ritter
• Eriosyce clavata var. parviflora (F.Ritter)
• Eriosyce nigrihorrida var. parviflora (F.Ritter) hort.

• Eriosyce subgibbosa (Haw.) Katt.
• Chilenia subgibbosa (Haw.) Backeb.
• Euporteria subgibbosa (Haw.) Kreuz. & Buining
• Neoporteria subgibbosa (Haw.) Britton & Rose
• Eriosyce subgibbosa f. acutissima (Otto & A.Dietr.)
• Chilenia acutissima (Otto & A.Dietr.) Backeb.
• Echinocactus acutissimus Otto & A.Dietr.
• Euporteria acutissima (Otto & A.Dietr.) Kreuz. & Buining
• Neoporteria acutissima (Otto & A.Dietr.) Borg
• Eriosyce subgibbosa var. castanea (F.Ritter) Katt.
• Eriosyce castanea F.Ritter
• Neoporteria castanea F.Ritter
• Neoporteria subgibbosa var. castanea (F.Ritter) Ferryman
• Eriosyce subgibbosa f. castaneoides (Cels ex Salm-Dyck)
• Chilenia castaneoides (Cels ex Salm-Dyck) Backeb.
• Echinocactus castaneoides Cels ex Salm-Dyck
• Euporteria castaneoides (Cels ex Salm-Dyck) Kreuz. & Buining
• Neoporteria castaneoides (Cels ex Salm-Dyck) Werderm.
• Neoporteria subgibbosa f. castaneoides (Cels ex Salm-Dyck) Donald & G.D.Rowley
• Eriosyce subgibbosa f. chionacantha (Y.Itô)
• Neoporteria subgibbosa var. chionacantha Y.Itô
• Eriosyce subgibbosa f. exsculpta (Otto ex Pfeiff.)
• Echinocactus exsculptus Otto ex Pfeiff.
• Neoporteria exsculpta (Otto ex Pfeiff.) Borg
• Eriosyce subgibbosa f. graciana (F.Ritter)
• Neoporteria microsperma var. graciana F.Ritter
• Eriosyce subgibbosa f. heteracantha (Kreuz. & Buining)
• Chilenia heteracantha Backeb.
• Euporteria heteracantha Kreuz. & Buining
• Neoporteria heteracantha Backeb.
• Neoporteria subgibbosa f. heteracantha (Backeb.) Donald & G.D.Rowley
• Eriosyce subgibbosa var. litoralis (F.Ritter) Katt.
• Neoporteria litoralis F.Ritter
• Neoporteria litoralis var. intermedia
• Neoporteria litoralis var. robustispina Y.Itô
• Neoporteria subgibbosa var. intermedia (F.Ritter) A.E.Hoffm.
• Neoporteria subgibbosa var. litoralis (F.Ritter) A.E.Hoffm.
• Neoporteria subgibbosa f. litoralis (F.Ritter) Donald & G.D.Rowley
• Eriosyce subgibbosa f. major (Backeb.)
• Chilenia nigrihorrida var. major Backeb.
• Neoporteria nigrihorrida var. major Backeb.
• Neoporteria subgibbosa f. major (Backeb.) Donald & G.D.Rowley
• Eriosyce subgibbosa f. microsperma (F.Ritter)
• Neoporteria microsperma F.Ritter
• Neoporteria subgibbosa f. microsperma (F.Ritter) Donald & G.D.Rowley
• Neoporteria wagenknechtii var. microsperma (F.Ritter) A.E.Hoffm.
• Eriosyce subgibbosa f. minor (Backeb.)
• Chilenia nigrihorrida var. minor Backeb.
• Neoporteria nigrihorrida var. minor Backeb.
• Neoporteria subgibbosa f. minor (Backeb.) Donald & G.D.Rowley
• Eriosyce subgibbosa f. orientalis (F.Ritter)
• Neoporteria subgibbosa var. orientalis F.Ritter
• Eriosyce subgibbosa f. rostrata (Jacobi)
• Chilenia rostrata (Jacobi) Backeb.
• Echinocactus rostratus Jacobi
• Hildmannia rostrata (Jacobi) Kreuz. & Buining
• Neochilenia rostrata (Jacobi) Backeb.
• Eriosyce subgibbosa f. serenana (F.Ritter)
• Neoporteria microsperma var. serenana F.Ritter & Y.Itô
• Neoporteria subgibbosa f. serenana (F.Ritter) Donald & G.D.Rowley
• Eriosyce subgibbosa f. subcylindrica (Backeb.)
• Chilenia subcylindrica Backeb.
• Euporteria subcylindrica Kreuz. & Buining
• Neoporteria subcylindrica (Backeb.) Backeb.
• Neoporteria subgibbosa f. subcylindrica (Backeb.) Donald & G.D.Rowley
• Eriosyce subgibbosa f. tunensis (F.Ritter)
• Neoporteria castanea var. tunensis F.Ritter
• Neoporteria subgibbosa f. tunensis (F.Ritter) Donald & G.D.Rowley
• Neoporteria cachitaensis n.n., catalog name

• Eriosyce subgibbosa subs. clavata (Söhrens ex K.Schum.) Katt.
• Arequipa clavata (Söhrens) Borg
• Echinocactus clavatus Söhrens
• Eriosyce clavata (Söhrens ex K.Schum.) Helmut Walter
• Euporteria clavata (Söhrens) Kreuz. & Buining
• Neoporteria clavata (Söhrens ex K.Schum.) Werderm.
• Eriosyce subgibbosa var. nigrihorrida (Backeb. ex A.W.Hill) Katt.
• Chilenia nigrihorrida Backeb. ex A.W.Hill
• Chilenia nigrihorrida Backeb.
• Echinocactus nigrihorridus
• Eriosyce clavata subs. nigrihorrida (Backeb. ex A.W.Hill) Helmut Walter
• Eriosyce subgibbosa subs. nigrihorrida (Backeb. ex A.W.Hill) Katt.
• Euporteria nigrihorrida (Backeb. ex A.W.Hill) Kreuz. & Buining
• Neoporteria clavata var. nigrihorrida (Backeb.) A.E.Hoffm.
• Neoporteria nigrihorrida (Backeb. ex A.W.Hill) Backeb.
• Neoporteria nigrispina n.n.
• Neoporteria subgibbosa var. nigrihorrida (Backeb.) Donald & G.D.Rowley
• Eriosyce subgibbosa f. rapifera (F.Ritter & Y.Itô)
• Neoporteria rapifera F.Ritter & Y.Itô
• Eriosyce subgibbosa var. vallenarensis (F.Ritter) Katt.
• Eriosyce subgibbosa subs. vallenarensis (F.Ritter) Katt.
• Horridocactus vallenarensis (F.Ritter) Backeb.
• Neoporteria curvispina var. vallenarensis (F.Ritter) Donald & G.D.Rowley
• Neoporteria subgibbosa var. vallenarensis (F.Ritter) Katt.
• Neoporteria vallenarensis F.Ritter
• Neoporteria wagenknechtii var. vallenarensis (F.Ritter) A.E.Hoffm.
• Pyrrhocactus vallenarensis F.Ritter
• Eriosyce subgibbosa var. wagenknechtii (F.Ritter) Katt.
• Eriosyce subgibbosa subs. wagenknechtii (F.Ritter) Katt.
• Neochilenia wagenknechtii (F.Ritter) Backeb.
• Neoporteria jussieui var. wagenknechtii (F.Ritter) A.E.Hoffm.
• Neoporteria wagenknechtii F.Ritter
• Pyrrhocactus wagenknechtii F.Ritter
• Eriosyce subgibbosa var. wagenknechtii f. napina (F.Ritter)
• Neoporteria wagenknechtii var. napina F.Ritter
• Neoporteria clavata f. grandiflora F.Ritter
• Neoporteria clavata f. parviflora F.Ritter
• Eriosyce clavata var. parviflora (F.Ritter)
• Eriosyce nigrihorrida var. parviflora (F.Ritter) hort.
• Neoporteria clavata f. procera F.Ritter

Description: Eriosyce subgibbosaSN|2931]]SN|2931]] var. clavata f. grandiflora|SN|21616]] is one of the innumerable and controversial form and variety of Eriosyce subgibbosaSN|2931]]SN|2931]] which is a very variable species forming cylindrical stems. Eriosyce subgibbosaSN|2931]]SN|2931]] var. clavata has flowers of variable size, the large flowered form is sometime classified as forma "grandiflora" while the small flowered one is named forma "parviflora". However the extent of variation in Eriosyce subgibbosaSN|2931]]SN|2931]] has led most authors to conclude that "grandiflora" and "parviflora" are not sufficiently distinct to deserve their own formal status.
Stem: Solitary, but sometimes branched, globular to columnar, up to 90 cm tall (or more), up to 10 cm wide. Grey-green, brownish-green or blackish-green. ("clavata" means "club shaped" and refers to the usually cylindrical stem shape of this form)
Ribs: up to 20
Spines: Nearly hiding the ribs, acicular, more or less long and dense, white, yellowish, golden yellow, brown, or nearly black, while older one became greyish.
Radial spines: 8-30, radiating,
Central spines: 4 (or more) stronger, straight or recurved and spreading, often darker at the tips..
Flower: Pretty relatively small up to about 4 cm long, bi-coloured with magenta, rose to the violet petal tips and pinkish-white, white or yellowish-white throat, giving the sensation of being fluorescent and being very difficult to photograph in good conditions because that particularity.
Blooming season: Blooms early in late winter to spring. It is advisable to leave them dry from middle of November to obtain fantastic flowering later in January/March.
Fruits: Ovoid to cylindrical, partly hollow at maturity, only scarcely woolly, apical areoles not spinescent.

Bibliography: Major references and further lectures
1) Edward Anderson “The Cactus family” Timber Press, Incorporated, 2001
2) Nathaniel Lord Britton, Joseph Nelson Rose “Cactaceae: Descriptions and Illustrations of Plants of the Cactus Family” vol. 4 The Carnegie Institution of Washington, Washington 1923
3) 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
4) David R Hunt; Nigel P Taylor; Graham Charles; International Cactaceae Systematics Group. "The New Cactus Lexicon" dh books, 2006 ISBN 0953813444, 9780953813445
5) Fred Kattermann "Eriosyce (Cactaceae): The Genus Revised and Amplified" David Hunt, 1994

Cultivation and Propagation: It is a summer grower species. Easy to cultivate but somewhat rot prone if kept in a non ventilated place. Require a very fast draining drying soil, water regularly in summer, but do not over-water.
Needs a full sun exposure (or light shade) Good heat tolerance. Hardy to at least -5°C ( but probably can tolerate - 10° C for brief periods).
Propagation: Usually propagated from Seeds. (seldom produces offsets)