Acanthocalycium glaucum: Difference between revisions
From M&J Cactus Wiki
Created page with "{{Taxobox | name = Acanthocalycium glaucum | image = Acanthocalycium_glaucum.jpg | kingdom = Plantae | family = Cactaceae | subfamily = Cactoideae | tribe = Trichocereeae | genus = Acanthocalycium | species = '''Acanthocalycium glaucum''' | notes = Taxonomy follows Joël Lodé (2015–2019). }} == Description == '''Acanthocalycium glaucum''' is a small cactus species forming globose to short cylindrical stems, typically bluish-green to gray-green in..." |
No edit summary |
||
| Line 8: | Line 8: | ||
| genus = [[Acanthocalycium]] | | genus = [[Acanthocalycium]] | ||
| species = '''Acanthocalycium glaucum''' | | species = '''Acanthocalycium glaucum''' | ||
| notes = Taxonomy | | notes = Taxonomy according to Joël Lodé (v1.19). | ||
}} | }} | ||
== Description == | == Description == | ||
'''Acanthocalycium glaucum''' is a small cactus species | '''Acanthocalycium glaucum''' is a small, solitary cactus species characterized by its distinct glaucous (bluish-grey to silvery-green) epidermis. The stems are globose to short cylindrical, reaching up to 10-15 cm in height. | ||
The ribs are well-defined | The ribs (typically 8–14) are well-defined and slightly tuberculate. Areoles are felted, bearing 5–10 radial spines that are straight, dark grey to blackish when young, later turning grey. | ||
The flowers are a highlight of this species: funnel-shaped, typically '''bright yellow to orange-yellow''', about 6 cm in diameter. The floral tube is covered with characteristic papery scales and white hairs, which gives the genus its name. | |||
== Distribution == | == Distribution == | ||
* '''Argentina:''' Found primarily in the provinces of Catamarca and La Rioja, growing in rocky, mineral-rich soils at altitudes between 500 and 1000m. | |||
* ''' | |||
== Taxonomy == | == Taxonomy == | ||
According to Joël Lodé, | According to '''Joël Lodé (Taxonomy of the Cactaceae, 2015)''', ''Acanthocalycium glaucum'' is a distinct and accepted species. While some previous authors (like Hunt) treated it as a variety of ''Acanthocalycium thionanthum'', molecular and morphological data supported by Lodé maintain its specific rank. | ||
== Synonyms == | == Synonyms == | ||
Based on the '''Lodé Index (v1.19)''', the following names are associated with this taxon: | |||
* ''Acanthocalycium aurantiacum'' Rausch | |||
* '' | * ''Acanthocalycium thionanthum var. glaucum'' (Ritter) Donald | ||
* '' | * ''Echinopsis glaucina'' H.Friedrich & G.D.Rowley | ||
* ''Lobivia thionantha var. glauca'' (Ritter) Rausch | |||
== Cultivation == | == Cultivation == | ||
This species is | This species is highly valued by collectors for its contrast between the blue skin and yellow flowers. | ||
* | * '''Soil:''' Requires a strictly mineral, well-draining substrate. | ||
* | * '''Watering:''' Regular during summer, but must be kept '''completely dry''' in winter to prevent root rot. | ||
* | * '''Light:''' Needs full sun to maintain its glaucous wax coating and produce dense spines. | ||
* '''Hardiness:''' Can tolerate brief frosts down to -5°C if dry. | |||
[[Category:Acanthocalycium]] | |||
[[Category:Cactaceae species]] | [[Category:Cactaceae species]] | ||
[[Category:Flora of Argentina]] | [[Category:Flora of Argentina]] | ||
[[Category:Trichocereeae]] | [[Category:Trichocereeae]] | ||
Revision as of 14:24, 25 March 2026
| Acanthocalycium glaucum | |
|---|---|
| File:Acanthocalycium glaucum.jpg | |
| Kingdom | Plantae |
| Family | Cactaceae |
| Subfamily | Cactoideae |
| Tribe | Trichocereeae |
| SubTribe | |
| Genus | Acanthocalycium |
| Species | Acanthocalycium glaucum |
| Notes | Taxonomy according to Joël Lodé (v1.19). |
Description
Acanthocalycium glaucum is a small, solitary cactus species characterized by its distinct glaucous (bluish-grey to silvery-green) epidermis. The stems are globose to short cylindrical, reaching up to 10-15 cm in height.
The ribs (typically 8–14) are well-defined and slightly tuberculate. Areoles are felted, bearing 5–10 radial spines that are straight, dark grey to blackish when young, later turning grey.
The flowers are a highlight of this species: funnel-shaped, typically bright yellow to orange-yellow, about 6 cm in diameter. The floral tube is covered with characteristic papery scales and white hairs, which gives the genus its name.
Distribution
- Argentina: Found primarily in the provinces of Catamarca and La Rioja, growing in rocky, mineral-rich soils at altitudes between 500 and 1000m.
Taxonomy
According to Joël Lodé (Taxonomy of the Cactaceae, 2015), Acanthocalycium glaucum is a distinct and accepted species. While some previous authors (like Hunt) treated it as a variety of Acanthocalycium thionanthum, molecular and morphological data supported by Lodé maintain its specific rank.
Synonyms
Based on the Lodé Index (v1.19), the following names are associated with this taxon:
- Acanthocalycium aurantiacum Rausch
- Acanthocalycium thionanthum var. glaucum (Ritter) Donald
- Echinopsis glaucina H.Friedrich & G.D.Rowley
- Lobivia thionantha var. glauca (Ritter) Rausch
Cultivation
This species is highly valued by collectors for its contrast between the blue skin and yellow flowers.
- Soil: Requires a strictly mineral, well-draining substrate.
- Watering: Regular during summer, but must be kept completely dry in winter to prevent root rot.
- Light: Needs full sun to maintain its glaucous wax coating and produce dense spines.
- Hardiness: Can tolerate brief frosts down to -5°C if dry.
