Acanthocalycium ferrarii: Difference between revisions

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== Description ==
== Description ==
'''Acanthocalycium ferrarii''' is a small globose cactus species native to Argentina. Plants are usually solitary, with dark green stems and well-defined ribs.
'''Acanthocalycium ferrarii''' is a solitary cactus species forming globose to short cylindrical stems, green in color, reaching up to 12 cm in diameter.


The ribs are typically low and rounded. Areoles are small and spaced along the ribs. Spines are short to medium in length, usually grayish with darker tips. The number and length of spines may vary depending on growing conditions.
The ribs are numerous, up to 18, rounded and often swollen at the areoles. Areoles are oval and whitish. Spines are horn-colored to brown, usually straight and awl-shaped. Central spines number 1–4 and reach up to 1.5 cm in length. Radial spines number 7–9 and may reach up to 2 cm.


Flowers are relatively large compared to the body, funnel-shaped, and commonly yellow, though variations may occur. The floral tube bears scales, hairs, and bristles typical of the genus.
Flowers are relatively large and showy, ranging in color from yellow to orange-red to carmine. They reach up to 5.5 cm in length and about 5 cm in diameter. Fruits are oval, up to 10 mm long and 8 mm in diameter.


== Distribution ==
== Distribution ==
* Argentina (northwestern regions)
* Argentina – Tucumán Province


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


In broader classifications, it is often treated as part of [[Echinopsis]], reflecting a wider genus concept based on molecular data.
In broader classifications, it may be included in [[Echinopsis]], reflecting a wider genus concept based on molecular phylogeny.


== Synonyms ==
== Synonyms ==
The following names have been associated with this species:
The following names have been associated with this species:


* ''[[Echinopsis ferrarii]]''
* ''[[Acanthocalycium variiflorum]]'' – not validly published
* ''[[Lobivia ferrarii]]''


== Notes ==
== Notes ==
* Considered closely related to other species of the genus such as [[Acanthocalycium thionanthum]].
* Described by Rausch (1976).
* Shows variability in spine development depending on habitat conditions.
* Closely related to other species within the genus.
* Shows variation in flower coloration.


== Cultivation ==
== Cultivation ==
This species is relatively easy to cultivate:
This species is relatively easy to cultivate:
* requires well-draining soil   
* requires well-draining mineral soil   
* prefers bright light   
* prefers bright light   
* benefits from a dry winter rest  
* tolerates cooler temperatures if kept dry during winter   


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

Revision as of 11:09, 25 March 2026

Acanthocalycium ferrarii
File:Acanthocalycium ferrarii.jpg
Kingdom Plantae
Family Cactaceae
Subfamily Cactoideae
Tribe Trichocereeae
SubTribe
Genus Acanthocalycium
Species Acanthocalycium ferrarii
Notes Taxonomy follows Joël Lodé (2015–2019), with alternative classifications noted below.

Description

Acanthocalycium ferrarii is a solitary cactus species forming globose to short cylindrical stems, green in color, reaching up to 12 cm in diameter.

The ribs are numerous, up to 18, rounded and often swollen at the areoles. Areoles are oval and whitish. Spines are horn-colored to brown, usually straight and awl-shaped. Central spines number 1–4 and reach up to 1.5 cm in length. Radial spines number 7–9 and may reach up to 2 cm.

Flowers are relatively large and showy, ranging in color from yellow to orange-red to carmine. They reach up to 5.5 cm in length and about 5 cm in diameter. Fruits are oval, up to 10 mm long and 8 mm in diameter.

Distribution

  • Argentina – Tucumán Province

Taxonomy

According to Joël Lodé, this species is accepted within the genus Acanthocalycium.

In broader classifications, it may be included in Echinopsis, reflecting a wider genus concept based on molecular phylogeny.

Synonyms

The following names have been associated with this species:

Notes

  • Described by Rausch (1976).
  • Closely related to other species within the genus.
  • Shows variation in flower coloration.

Cultivation

This species is relatively easy to cultivate:

  • requires well-draining mineral soil
  • prefers bright light
  • tolerates cooler temperatures if kept dry during winter