Acanthocalycium thionanthum - Revision history

Badmin at 15:53, 13 April 2026

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	* ''[[Acanthocalycium chionanthum]]''		* ''[[Acanthocalycium chionanthum]]''
	* ''[[Acanthocalycium griseum]]''		* ''[[Acanthocalycium griseum]]''
			* ''[[Echinopsis thionantha]]''
			* ''[[Lobivia thionantha]]''
			* ''[[Echinocactus thionanthus]]''
			* ''[[Echinopsis brevispina]]''
			* ''[[Lobivia brevispina]]''
			* ''[[Echinopsis chionantha]]''
			* ''[[Lobivia chionantha]]''
			* ''[[Echinocactus chionanthus]]''

	== Notes ==		== Notes ==

Badmin at 15:25, 13 April 2026

2026-04-13T15:25:45Z

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	== Description ==		== Description ==
	'''Acanthocalycium thionanthum''' is a ~~small to medium-sized~~ cactus species ~~native to Argentina. Plants are~~ usually solitary, globose to short cylindrical~~, dark~~ green to ~~gray-~~green, ~~reaching up to 12 cm in height and 10 cm in diameter~~.		'''Acanthocalycium thionanthum''' is a variable cactus species, usually solitary, with globose to short cylindrical stems. The epidermis is green to dark green, sometimes slightly glaucous.

	The ribs are ~~9–15~~, rounded ~~and slightly notched~~. Areoles ~~are elliptical~~. Spines are ~~awl-shaped~~, gray ~~with darker tips, typically 1–1.5 cm long. Central spines (1–4) may be absent, while radial spines number 5–10~~.		The ribs are well defined, typically numbering between 9 and 15, with rounded margins. Areoles bear numerous radial spines and several central spines. Spines are straight, varying in color from whitish to brownish or gray.

	Flowers are ~~somewhat bell~~-shaped and variable in color, ranging from ~~bright~~ yellow to ~~red~~ or ~~white, up to 4~~.~~5 cm in length and diameter. Floral tubes bear dark, spine-tipped~~ scales ~~along~~ with hairs and bristles. Fruits are ~~globose~~, dry, and dehiscent, ~~up to 1 cm in diameter~~.		Flowers are funnel-shaped, diurnal, and variable in color, ranging from yellow to white or pinkish tones. The floral tube bears characteristic scales with spines, hairs, and bristles.

			Fruits are spherical, dry, and dehiscent. Seeds are small, dark, and papillose.

	== Distribution ==		== Distribution ==
	* Argentina – Salta ~~Province~~		* Argentina – Catamarca, La Rioja, Salta, Tucumán

	== Taxonomy ==		== Taxonomy ==
	According to '''Joël Lodé''', this species is ~~placed in~~ the genus [[Acanthocalycium]].		According to '''Joël Lodé''', this species is recognized within the genus [[Acanthocalycium]].

	== Synonyms ==		== Synonyms ==
	* ''[[~~Echinopsis thionantha~~]]''		* ''[[Acanthocalycium aurantiacum]]''
	* ''[[~~Echinocactus thionanthus~~]]''		* ''[[Acanthocalycium brevispinum]]''
	* ''[[~~Lobivia thionantha]]''~~		* ''[[Acanthocalycium catamarcense]]''
	* ''[[Echinocactus chionanthus]]''
	* ''[[Lobivia chionantha]]''
	* ''[[Echinopsis chionantha]]''
	* ''[[Acanthocalycium chionanthum]]''		* ''[[Acanthocalycium chionanthum]]''
	* ''[[Acanthocalycium brevispinum]]''
	* ''[[Echinopsis brevispinum]]''
	* ''[[Acanthocalycium griseum]]''		* ''[[Acanthocalycium griseum]]''
	* ''[[Acanthocalycium catamarcense]]''

	== Notes ==		== Notes ==
	* ~~Species shows high variability in flower color and spine development~~.		* One of the most variable species within the genus.
	* ~~Frequently encountered~~ under ~~different generic~~ names ~~in horticulture~~.		* Has been described under numerous names, later unified under ''Acanthocalycium thionanthum''.
	* ~~One of the more widely distributed species within the genus~~.		* Variation occurs in spine density, stem coloration, and flower color.

	== Cultivation ==		== Cultivation ==
	~~This species is relatively easy to cultivate:~~
	* prefers well-draining mineral substrate		* prefers well-draining mineral substrate
	* requires bright light to full sun		* requires bright light to full sun

Badmin at 14:52, 13 April 2026

2026-04-13T14:52:47Z

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	\| notes = Taxonomy follows Joël Lodé (2015–2019).		\| notes = Taxonomy follows Joël Lodé (2015–2019).
	}}		}}

			''Acanthocalycium thionanthum'' is a species of cactus in the genus [[Acanthocalycium]], native to Argentina.

	== Description ==		== Description ==
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	== Synonyms ==		== Synonyms ==
	~~The following names have been applied to this species:~~

	* ''[[Echinopsis thionantha]]''		* ''[[Echinopsis thionantha]]''
	* ''[[Echinocactus thionanthus]]''		* ''[[Echinocactus thionanthus]]''

Badmin at 14:50, 13 April 2026

2026-04-13T14:50:37Z

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	[[Category:Cactoideae]]		[[Category:Cactoideae]]
	[[Category:Trichocereeae]]		[[Category:Trichocereeae]]
	[[Category:~~Acantocalicium~~]]		[[Category:Acanthocalycium]]

Badmin at 14:49, 13 April 2026

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	This species is relatively easy to cultivate:		This species is relatively easy to cultivate:
	* prefers well-draining mineral substrate		* prefers well-draining mineral substrate
	* requires bright light ~~for compact~~ growth		* requires bright light to full sun
	* ~~tolerates~~ cool ~~temperatures if kept dry~~ in winter		* moderate watering during active growth
			* keep dry and cool in winter

	[[Category:Cactaceae ~~species~~]]		[[Category:Cactaceae]]
	[[Category:~~Flora of Argentina~~]]		[[Category:Cactoideae]]
	[[Category:Trichocereeae]]		[[Category:Trichocereeae]]
			[[Category:Acantocalicium]]

Badmin at 14:45, 13 April 2026

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	== Taxonomy ==		== Taxonomy ==
	According to '''Joël Lodé''', this species is placed in the genus [[Acanthocalycium]].		According to '''Joël Lodé''', this species is placed in the genus [[Acanthocalycium]].

	~~{{TaxonomySource}}~~

	~~== Species within the genus ==~~
	* [[Acanthocalycium ferrarii]]
	* [[Acanthocalycium glaucum]]
	* [[Acanthocalycium klimpelianum]]
	* [[Acanthocalycium spiniflorum]]
	* '''Acanthocalycium thionanthum'''

	== Synonyms ==		== Synonyms ==

Badmin at 23:01, 11 April 2026

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	{{Taxobox		{{Taxobox
	\| name = Acanthocalycium thionanthum		\| name = Acanthocalycium thionanthum
	\| image = ~~Acanthocalycium_thionanthum~~.jpg		\| image = Acanthocalycium thionanthum.jpg
	\| kingdom = [[Plantae]]		\| kingdom = [[Plantae]]
	\| family = [[Cactaceae]]		\| family = [[Cactaceae]]
	\| subfamily = [[Cactoideae]]		\| subfamily = [[Cactoideae]]
	\| tribe = [[Trichocereeae]]		\| tribe = [[Trichocereeae]]
	~~\| subtribe = [[Trichocereinae]]~~
	\| genus = [[Acanthocalycium]]		\| genus = [[Acanthocalycium]]
	\| species = '''A. thionanthum'''		\| species = '''Acanthocalycium thionanthum'''
	~~\| binomial = ''Acanthocalycium thionanthum''~~
	~~\| binomial_authority = (Speg.) Backeb.~~
	\| notes = Taxonomy follows Joël Lodé (2015–2019).		\| notes = Taxonomy follows Joël Lodé (2015–2019).
	}}		}}

	''Acanthocalycium thionanthum'' is a species ~~of cactus~~ in ~~the genus [[Acanthocalycium]]~~.		== Description ==
			'''Acanthocalycium thionanthum''' is a small to medium-sized cactus species native to Argentina. Plants are usually solitary, globose to short cylindrical, dark green to gray-green, reaching up to 12 cm in height and 10 cm in diameter.

	~~== Etymology ==~~		The ribs are 9–15, rounded and slightly notched. Areoles are elliptical. Spines are awl-shaped, gray with darker tips, typically 1–1.5 cm long. Central spines (1–4) may be absent, while radial spines number 5–10.
	The ~~name ''thionanthum'' derives from Greek~~, ~~referring to sulfur~~-~~yellow flowers~~ (~~"thion" = sulfur~~, ~~"anthos" = flower)~~.

	~~== Description ==~~		Flowers are somewhat bell-shaped and variable in color, ranging from bright yellow to red or white, up to 4.5 cm in length and diameter. Floral tubes bear dark, spine-tipped scales along with hairs and bristles. Fruits are globose, dry, and dehiscent, up to 1 cm in diameter.
	~~''Acanthocalycium thionanthum'' is a small to medium~~-~~sized cactus~~, ~~usually solitary~~, ~~with globose~~ to ~~short cylindrical stems~~. ~~The epidermis is green to~~ dark ~~green~~, ~~often slightly glossy~~.

	Ribs are well defined, with rounded to slightly acute edges. Areoles are spaced regularly and bear numerous radial spines and several central spines. Spines are straight, acicular, varying in color from whitish to brownish.		== Distribution ==
			* Argentina – Salta Province

	~~Flowers are diurnal, funnel-shaped, typically yellow~~ to ~~pale yellow~~, ~~occasionally with a slight greenish hue. They arise near~~ the ~~apex and have a spiny floral tube~~.		== Taxonomy ==
			According to '''Joël Lodé''', this species is placed in the genus [[Acanthocalycium]].

	~~Fruits are spherical, dry, and dehiscent, with persistent scales. Seeds are small, dark, and papillose.~~		{{TaxonomySource}}

	== ~~Habitat~~ ==		== Species within the genus ==
	~~The species grows in arid to semi-arid environments, often on rocky slopes or among grasses and low shrubs. It tolerates strong sunlight but can also be found in lightly shaded conditions.~~		* [[Acanthocalycium ferrarii]]
			* [[Acanthocalycium glaucum]]
			* [[Acanthocalycium klimpelianum]]
			* [[Acanthocalycium spiniflorum]]
			* '''Acanthocalycium thionanthum'''

	== ~~Distribution~~ ==		== Synonyms ==
	* Argentina – Catamarca, La Rioja, Salta, Tucumán		The following names have been applied to this species:

	~~== Synonyms ==~~		* ''[[Echinopsis thionantha]]''
	~~{{columns-list\|1\|~~		* ''[[Echinocactus thionanthus]]''
	* ''~~Echinopsis~~ thionantha'' ~~(Speg.)~~		* ''[[Lobivia thionantha]]''
	* ''Lobivia ~~thionantha~~'' ~~(Speg.)~~		* ''[[Echinocactus chionanthus]]''
	* ''Acanthocalycium brevispinum''		* ''[[Lobivia chionantha]]''
	* ''Echinopsis ~~brevispina~~''		* ''[[Echinopsis chionantha]]''
	}}		* ''[[Acanthocalycium chionanthum]]''
			* ''[[Acanthocalycium brevispinum]]''
			* ''[[Echinopsis brevispinum]]''
			* ''[[Acanthocalycium griseum]]''
			* ''[[Acanthocalycium catamarcense]]''

	== Notes ==		== Notes ==
	* ~~Originally described as ''Echinopsis thionantha'' by Spegazzini~~.		* Species shows high variability in flower color and spine development.
	* ~~Later transferred to ''Acanthocalycium'' by Backeberg~~.		* Frequently encountered under different generic names in horticulture.
	* ~~The~~ species ~~shows variability in spine density and flower coloration~~.		* One of the more widely distributed species within the genus.
	* ~~Sometimes included within ''Echinopsis''~~ in ~~broader classifications.~~
			== Cultivation ==
			This species is relatively easy to cultivate:
			* prefers well-draining mineral substrate
			* requires bright light for compact growth
			* tolerates cool temperatures if kept dry in winter

	[[Category:Cactaceae]]		[[Category:Cactaceae species]]
			[[Category:Flora of Argentina]]
	[[Category:Trichocereeae]]		[[Category:Trichocereeae]]

	~~{{Acanthocalycium species}}~~

Badmin at 22:58, 11 April 2026

2026-04-11T22:58:38Z

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	{{Taxobox		{{Taxobox
	\| name = Acanthocalycium thionanthum		\| name = Acanthocalycium thionanthum
	\| image = ~~Acanthocalycium thionanthum~~.jpg		\| image = Acanthocalycium_thionanthum.jpg
	\| kingdom = [[Plantae]]		\| kingdom = [[Plantae]]
	\| family = [[Cactaceae]]		\| family = [[Cactaceae]]
	\| subfamily = [[Cactoideae]]		\| subfamily = [[Cactoideae]]
	\| tribe = [[Trichocereeae]]		\| tribe = [[Trichocereeae]]
			\| subtribe = [[Trichocereinae]]
	\| genus = [[Acanthocalycium]]		\| genus = [[Acanthocalycium]]
	\| species = '''Acanthocalycium thionanthum'''		\| species = '''A. thionanthum'''
			\| binomial = ''Acanthocalycium thionanthum''
			\| binomial_authority = (Speg.) Backeb.
	\| notes = Taxonomy follows Joël Lodé (2015–2019).		\| notes = Taxonomy follows Joël Lodé (2015–2019).
	}}		}}

			''Acanthocalycium thionanthum'' is a species of cactus in the genus [[Acanthocalycium]].

			== Etymology ==
			The name ''thionanthum'' derives from Greek, referring to sulfur-yellow flowers ("thion" = sulfur, "anthos" = flower).

	== Description ==		== Description ==
	'''Acanthocalycium thionanthum''' is a small to medium-sized cactus ~~species native to Argentina. Plants are~~ usually solitary, globose to short cylindrical~~, dark~~ green to ~~gray-~~green, ~~reaching up to 12 cm in height and 10 cm in diameter~~.		''Acanthocalycium thionanthum'' is a small to medium-sized cactus, usually solitary, with globose to short cylindrical stems. The epidermis is green to dark green, often slightly glossy.

	~~The ribs~~ are ~~9–15~~, rounded ~~and~~ slightly ~~notched~~. Areoles are ~~elliptical~~. Spines are ~~awl-shaped~~, ~~gray with darker tips~~, ~~typically 1–1.5 cm long. Central spines (1–4) may be absent, while radial spines number 5–10~~.		Ribs are well defined, with rounded to slightly acute edges. Areoles are spaced regularly and bear numerous radial spines and several central spines. Spines are straight, acicular, varying in color from whitish to brownish.

	Flowers are ~~somewhat bell~~-shaped ~~and variable in color~~, ~~ranging from bright~~ yellow to ~~red or white, up to 4.5 cm in length and diameter. Floral tubes bear dark~~, ~~spine-tipped scales along~~ with ~~hairs and bristles~~. ~~Fruits are globose, dry,~~ and ~~dehiscent, up to 1 cm in diameter~~.		Flowers are diurnal, funnel-shaped, typically yellow to pale yellow, occasionally with a slight greenish hue. They arise near the apex and have a spiny floral tube.

	~~== Distribution ==~~		Fruits are spherical, dry, and dehiscent, with persistent scales. Seeds are small, dark, and papillose.
	* Argentina – Salta Province

	== ~~Taxonomy~~ ==		== Habitat ==
	~~According~~ to ~~'''Joël Lodé'''~~, ~~this species is placed~~ in ~~the genus [[Acanthocalycium]]~~.		The species grows in arid to semi-arid environments, often on rocky slopes or among grasses and low shrubs. It tolerates strong sunlight but can also be found in lightly shaded conditions.

	~~{{TaxonomySource}}~~		== Distribution ==
			* Argentina – Catamarca, La Rioja, Salta, Tucumán
	== ~~Species within the genus~~ ==
	* ~~[[Acanthocalycium ferrarii]]~~
	* [[Acanthocalycium glaucum]]
	* [[Acanthocalycium klimpelianum]]
	* [[Acanthocalycium spiniflorum]]
	* '''Acanthocalycium thionanthum'''

	== Synonyms ==		== Synonyms ==
	~~The following names have been applied to this species:~~		{{columns-list\|1\|
			* ''Echinopsis thionantha'' (Speg.)
	* ''[[Echinopsis thionantha~~]]''~~		* ''Lobivia thionantha'' (Speg.)
	* ''[[Echinocactus thionanthus]]''		* ''Acanthocalycium brevispinum''
	* ''[[Lobivia thionantha~~]]''~~		* ''Echinopsis brevispina''
	* ''[[Echinocactus chionanthus]]''		}}
	* ''[[Lobivia chionantha]]''
	* ''[[Echinopsis chionantha]]''
	* ''[[Acanthocalycium chionanthum]]''
	* ''[[Acanthocalycium brevispinum]]''
	* ''[[Echinopsis ~~brevispinum]]''~~
	* ''[[Acanthocalycium griseum]]''
	* ''[[Acanthocalycium catamarcense]]''

	== Notes ==		== Notes ==
	* ~~Species shows high variability in flower color and spine development~~.		* Originally described as ''Echinopsis thionantha'' by Spegazzini.
	* ~~Frequently encountered under different generic names in horticulture~~.		* Later transferred to ''Acanthocalycium'' by Backeberg.
	* ~~One of the more widely distributed~~ species ~~within the genus~~.		* The species shows variability in spine density and flower coloration.
			* Sometimes included within ''Echinopsis'' in broader classifications.
	~~== Cultivation ==~~
	~~This species is relatively easy to cultivate:~~
	* ~~prefers well-draining mineral substrate~~
	* requires bright light for compact growth
	* tolerates cool temperatures if kept dry in ~~winter~~

	[[Category:Cactaceae]]		[[Category:Cactaceae]]
	~~[[Category:Cactoideae]]~~
	[[Category:Trichocereeae]]		[[Category:Trichocereeae]]
	~~[[Category:~~Acanthocalycium]]
			{{Acanthocalycium species}}

Badmin at 17:10, 11 April 2026

2026-04-11T17:10:45Z

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	* tolerates cool temperatures if kept dry in winter		* tolerates cool temperatures if kept dry in winter

	[[Category:Cactaceae ~~species~~]]		[[Category:Cactaceae]]
	[[Category:~~Flora of Argentina~~]]		[[Category:Cactoideae]]
	[[Category:Trichocereeae]]		[[Category:Trichocereeae]]
			[[Category:Acanthocalycium]]

Badmin: /* Synonyms */

2026-03-25T12:03:09Z

Synonyms

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	The following names have been applied to this species:		The following names have been applied to this species:

	* ''[[Echinopsis thionantha]]'' ~~– (Spegazzini) Werdermann (1931)~~		* ''[[Echinopsis thionantha]]''
	* ''[[Echinocactus thionanthus]]'' ~~– Spegazzini (1905)~~		* ''[[Echinocactus thionanthus]]''
	* ''[[Lobivia thionantha]]'' ~~– (Spegazzini) Britton & Rose (1922)~~		* ''[[Lobivia thionantha]]''
	* ''[[Echinocactus chionanthus]]'' ~~– Spegazzini (1905)~~		* ''[[Echinocactus chionanthus]]''
	* ''[[Lobivia chionantha]]'' ~~– (Spegazzini) Britton & Rose (1922)~~		* ''[[Lobivia chionantha]]''
	* ''[[Echinopsis chionantha]]'' ~~– (Spegazzini) Werdermann (1931)~~		* ''[[Echinopsis chionantha]]''
	* ''[[Acanthocalycium chionanthum]]'' ~~– (Spegazzini) Backeberg (1935)~~		* ''[[Acanthocalycium chionanthum]]''
	* ''[[Acanthocalycium brevispinum]]'' ~~– F. Ritter (1964)~~		* ''[[Acanthocalycium brevispinum]]''
	* ''[[Echinopsis brevispinum]]'' ~~– (F. Ritter) H. Friedrich & G.D. Rowley (1974)~~		* ''[[Echinopsis brevispinum]]''
			* ''[[Acanthocalycium griseum]]''
	~~=== Invalid or doubtful names ===~~		* ''[[Acanthocalycium catamarcense]]''
	* ''Acanthocalycium griseum'' ~~– not validly published~~
	* ''Acanthocalycium catamarcense'' ~~– considered synonymous~~

	== Notes ==		== Notes ==