Acanthocalycium keuhhasii
Acanthocalycium keuhhasii
Acanthocalycium keuhhasii
Acanthocalycium keuhhasii (Rausch) V.Gapon is treated as an accepted taxon in Plants of the World Online.1
The current source-backed classification places it in Cactaceae within Acanthocalycium.12
Its recorded native range/source remark is AGWSJ, AGWSL, SOUTHERNAMERICA, AGWJU, AGWME, SOUTHERNSOUTHAMERICA, AGW, AGWSA, AGWSE, AGWLR, AGWCA, AGWTU; Argentina (La Rioja).1
POWO records the plant context as succulent subshrub, subtropical.1
This is a source-populated draft intended for later Kaktus Doktoru editorial rewriting; care advice and morphology should be reviewed before publication.
References
- Plants of the World Online. "Acanthocalycium keuhhasii (Rausch) V.Gapon". Royal Botanic Gardens, Kew. Accessed: 2026-06-10. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77371954-1 ↩
- GBIF Secretariat. "Acanthocalycium keuhhasii". GBIF Backbone Taxonomy. Accessed: 2026-06-10. https://www.gbif.org/species/7283711 ↩
Plants In This Group
Acanthocalycium keuhhasii
Acanthocalycium keuhhasii
Acanthocalycium keuhhasii is a perennial, succulent subshrub in the family Cactaceae, native to the arid and semi-arid mountainous regions of western and northwestern Argentina 1. Known for its dense, fierce spination and showy funnel-shaped flowers, this cactus is highly adapted to withstand harsh alpine-like conditions in its natural habitat.
Sınıflandırma ve adlandırma
The species is classified under the genus Acanthocalycium. The generic name is derived from the Greek words "akantha" (spine) and "kalyx" (calyx/bud), referring to the characteristic spiny scales covering the flower tube 2. The specific epithet keuhhasii honors a prominent plant explorer or cactus enthusiast. Recent molecular and morphological studies maintain its status within Acanthocalycium.
Doğal yayılış ve habitat
This taxon is widespread across several provinces in Argentina, including Catamarca, La Rioja, San Juan, San Luis, Mendoza, Salta, and Jujuy 1. It is typically found at elevations between 1000 and 2500 meters above sea level, growing on rocky slopes, gravelly plains, and crevices within subtropical mountain biomes.
Görünüm
The stem is solitary, globose when young, and becomes short-cylindrical with age, displaying a dark green to grayish-green epidermis. It features prominent ribs lined with woolly areoles. The spines are stiff, varying from yellowish-brown to gray, providing excellent shade and protection. The summer-blooming flowers are yellow, orange, or reddish, distinguished by their uniquely spiny floral tubes.
Kültürde bakım
In cultivation, Acanthocalycium keuhhasii requires an extremely porous, mineral-based cactus substrate 2. It thrives under full, direct sunlight, which promotes strong spine development and abundant flowering. During the winter dormancy, the plant should be kept completely dry and placed in a cool, frost-free location to encourage the next season's blooms.
Sık görülen bakım hataları
The most common pitfall is overwatering, particularly during the cold winter months, which quickly leads to root rot 1. Poorly draining soil and insufficient light also cause etiolation, wherein the stem stretches unnaturally toward the light, weakening its overall structure and defense mechanisms.
References
Acanthocalycium keuhhasii
Acanthocalycium keuhhasii
Acanthocalycium keuhhasii is a perennial, succulent subshrub in the family Cactaceae, native to the arid and semi-arid mountainous regions of western and northwestern Argentina 1. Known for its dense, fierce spination and showy funnel-shaped flowers, this cactus is highly adapted to withstand harsh alpine-like conditions in its natural habitat.
Sınıflandırma ve adlandırma
The species is classified under the genus Acanthocalycium. The generic name is derived from the Greek words "akantha" (spine) and "kalyx" (calyx/bud), referring to the characteristic spiny scales covering the flower tube 2. The specific epithet keuhhasii honors a prominent plant explorer or cactus enthusiast. Recent molecular and morphological studies maintain its status within Acanthocalycium.
Doğal yayılış ve habitat
This taxon is widespread across several provinces in Argentina, including Catamarca, La Rioja, San Juan, San Luis, Mendoza, Salta, and Jujuy 1. It is typically found at elevations between 1000 and 2500 meters above sea level, growing on rocky slopes, gravelly plains, and crevices within subtropical mountain biomes.
Görünüm
The stem is solitary, globose when young, and becomes short-cylindrical with age, displaying a dark green to grayish-green epidermis. It features prominent ribs lined with woolly areoles. The spines are stiff, varying from yellowish-brown to gray, providing excellent shade and protection. The summer-blooming flowers are yellow, orange, or reddish, distinguished by their uniquely spiny floral tubes.
Kültürde bakım
In cultivation, Acanthocalycium keuhhasii requires an extremely porous, mineral-based cactus substrate 2. It thrives under full, direct sunlight, which promotes strong spine development and abundant flowering. During the winter dormancy, the plant should be kept completely dry and placed in a cool, frost-free location to encourage the next season's blooms.
Sık görülen bakım hataları
The most common pitfall is overwatering, particularly during the cold winter months, which quickly leads to root rot 1. Poorly draining soil and insufficient light also cause etiolation, wherein the stem stretches unnaturally toward the light, weakening its overall structure and defense mechanisms.