Acanthocalycium thionanthum: Difference between revisions
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[[Category:Trichocereeae]] | [[Category:Trichocereeae]] | ||
[[Category:Acanthocalycium]] | |||
Revision as of 17:10, 11 April 2026
| Acanthocalycium thionanthum | |
|---|---|
| |
| Kingdom | Plantae |
| Family | Cactaceae |
| Subfamily | Cactoideae |
| Tribe | Trichocereeae |
| SubTribe | |
| Genus | Acanthocalycium |
| Species | Acanthocalycium thionanthum |
| Notes | Taxonomy follows Joël Lodé (2015–2019). |
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.
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.
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.
Distribution
- Argentina – Salta Province
Taxonomy
According to Joël Lodé, this species is placed in the genus Acanthocalycium.
📚 Taxonomy note: Taxonomic placement follows the system of Joël Lodé (2015–2019).
Species within the genus
- Acanthocalycium ferrarii
- Acanthocalycium glaucum
- Acanthocalycium klimpelianum
- Acanthocalycium spiniflorum
- Acanthocalycium thionanthum
Synonyms
The following names have been applied to this species:
- Echinopsis thionantha
- Echinocactus thionanthus
- Lobivia thionantha
- Echinocactus chionanthus
- Lobivia chionantha
- Echinopsis chionantha
- Acanthocalycium chionanthum
- Acanthocalycium brevispinum
- Echinopsis brevispinum
- Acanthocalycium griseum
- Acanthocalycium catamarcense
Notes
- Species shows high variability in flower color and spine development.
- Frequently encountered under different generic names in horticulture.
- One of the more widely distributed species within the genus.
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
