Acanthocalycium spiniflorum: Difference between revisions

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Created page with "{{Taxobox | name = Acanthocalycium spiniflorum | image = Acanthocalycium spiniflorum.jpg | kingdom = Plantae | family = Cactaceae | subfamily = Cactoideae | tribe = Trichocereeae | genus = Acanthocalycium | species = '''Acanthocalycium spiniflorum''' | notes = Taxonomy follows Joël Lodé (2015–2019). }} == Description == '''Acanthocalycium spiniflorum''' is a small to medium-sized cactus species native to Argentina. Plants are usually solitary, gl..."
 
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| genus = [[Acanthocalycium]]
| genus = [[Acanthocalycium]]
| species = '''Acanthocalycium spiniflorum'''
| species = '''Acanthocalycium spiniflorum'''
| notes = Taxonomy follows Joël Lodé (2015–2019).
| notes = Taxonomy follows Joël Lodé (2015–2019, updated 2025).
}}
}}


== Description ==
== Description ==
'''Acanthocalycium spiniflorum''' 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 15 cm in height and 10–12 cm in diameter.
'''Acanthocalycium spiniflorum''' is a globose to short cylindrical cactus species native to Argentina. Plants are typically solitary, dark green to gray-green, reaching up to 15 cm in height and 10–12 cm in diameter.


The ribs are numerous (typically 10–16), well defined and divided into tubercles. Areoles are oval and bear dense clusters of spines. Radial spines number 8–12, slender and slightly curved, while central spines (1–4) are stronger, often darker and more prominent.
The ribs are numerous (10–16), clearly defined and divided into tubercles. Areoles are oval, bearing dense clusters of spines. Radial spines (8–12) are slender and slightly curved, while central spines (1–4) are thicker and more prominent.


Flowers are funnel-shaped and relatively large, usually pink to reddish or magenta, sometimes with lighter centers. The floral tube is covered with scales, hairs, and bristles. Fruits are small, globose, dry, and split open when mature.
Flowers are large relative to the plant body, funnel-shaped, and usually pink to reddish or magenta, sometimes with lighter centers. The floral tube bears scales with hairs and bristles. Fruits are small, globose, dry, and dehiscent.


== Distribution ==
== Distribution ==
* Argentina – northwestern regions   
* Argentina – northwestern regions   


Occurs in dry mountainous areas, often on rocky slopes and well-drained soils.
Occurs in arid mountainous habitats, typically on rocky slopes and well-drained soils.


== 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]], which is currently accepted as a valid genus based on modern taxonomic revisions. :contentReference[oaicite:1]{index=1} 


The species has historically been associated with the genus [[Echinopsis]], reflecting morphological similarities and ongoing taxonomic revisions within the tribe.
Historically, the species has been associated with [[Echinopsis]] and [[Lobivia]], reflecting morphological similarities within the tribe Trichocereeae.


{{TaxonomySource}}
{{TaxonomySource}}
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== Notes ==
== Notes ==
* One of the more widely cultivated species in the genus.
* One of the most widespread and variable species within the genus.
* Notable for its relatively large and colorful flowers.
* Flower size is relatively large compared to the stem.
* Displays variability in spine density and coloration.
* Frequently encountered under different generic names in horticulture.


== Cultivation ==
== Cultivation ==
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  
* moderate watering during active growth   
* moderate watering during active growth   
* keep dry and cool in winter   
* keep dry and cool in winter   

Revision as of 16:30, 11 April 2026

Acanthocalycium spiniflorum
File:Acanthocalycium spiniflorum.jpg
Kingdom Plantae
Family Cactaceae
Subfamily Cactoideae
Tribe Trichocereeae
SubTribe
Genus Acanthocalycium
Species Acanthocalycium spiniflorum
Notes Taxonomy follows Joël Lodé (2015–2019, updated 2025).

Description

Acanthocalycium spiniflorum is a globose to short cylindrical cactus species native to Argentina. Plants are typically solitary, dark green to gray-green, reaching up to 15 cm in height and 10–12 cm in diameter.

The ribs are numerous (10–16), clearly defined and divided into tubercles. Areoles are oval, bearing dense clusters of spines. Radial spines (8–12) are slender and slightly curved, while central spines (1–4) are thicker and more prominent.

Flowers are large relative to the plant body, funnel-shaped, and usually pink to reddish or magenta, sometimes with lighter centers. The floral tube bears scales with hairs and bristles. Fruits are small, globose, dry, and dehiscent.

Distribution

  • Argentina – northwestern regions

Occurs in arid mountainous habitats, typically on rocky slopes and well-drained soils.

Taxonomy

According to Joël Lodé, this species is placed in the genus Acanthocalycium, which is currently accepted as a valid genus based on modern taxonomic revisions. :contentReference[oaicite:1]{index=1}

Historically, the species has been associated with Echinopsis and Lobivia, reflecting morphological similarities within the tribe Trichocereeae.

📚 Taxonomy note: Taxonomic placement follows the system of Joël Lodé (2015–2019).

Species within the genus

Synonyms

The following names have been applied to this species:

Notes

  • One of the most widespread and variable species within the genus.
  • Flower size is relatively large compared to the stem.
  • Frequently encountered under different generic names in horticulture.

Cultivation

This species is relatively easy to cultivate:

  • prefers well-draining mineral substrate
  • requires bright light to full sun
  • moderate watering during active growth
  • keep dry and cool in winter