| Gymnocalycium castellanosii | |
|---|---|
| |
| Conservation status | |
 Least Concern (IUCN 3.1) | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Gymnocalycium |
| Species: | G. castellanosii |
| Binomial name | |
| Gymnocalycium castellanosii Backeb. 1936 | |
Gymnocalycium castellanosii is a species of Gymnocalycium from Argentina.
Description
Gymnocalycium castellanosii is a solitary cactus with dull blue-green, spherical to elongated stems up to 15 cm tall and 10 cm in diameter. It has 10–12 broad, flat ribs divided into sharply defined humps. The straight, whitish spines, tipped in dark, include one central spine and 5–7 radial spines up to 2.5 cm long. The flowers are bell- to funnel-shaped, white with pink tinges, up to 4.5 cm long and wide. The fruits are green and spherical.
Subspecies
Two subspecies are recognized:
| Image | Name | Distribution |
|---|---|---|
 |
Gymnocalycium castellanosii subsp. castellanosii | Argentina (La Rioja, San Luis) |
| Gymnocalycium castellanosii subsp. ferocius (Backeb. ex H.Till & Amerh.) G.J.Charles | Argentina (Córdoba) |
Distribution
Native to Argentina, it grows in La Rioja, Córdoba, and San Juan provinces growing on rocky slopes and red sandstone mountains at altitudes of 500 to 1500 meters. Plants are found growing along with Gymnocalycium saglionis, Gymnocalycium schickendantzii, Gymnocalycium bodenbenderianum, Echinopsis aurea, Acanthocalycium leucanthum, Parodia microsperma, Tephrocactus articulatus, Stetsonia coryne, and Salmonopuntia salmiana.
Taxonomy
First described by Curt Backeberg in 1936, its specific epithet honors Argentine botanist Alberto Castellanos.
References
- "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. 2010-09-21. Retrieved 2024-12-08.
- Anderson, Edward F.; Eggli, Urs; Anderson, Edward F. (2005). Das große Kakteen-Lexikon (in German). Stuttgart (Hohenheim): Ulmer. p. 313-314. ISBN 3-8001-4573-1.
- "Gymnocalycium castellanosii Backeb". Plants of the World Online. Retrieved 2024-12-08.
- "Gymnocalycium castellanosii". LLIFLE. 2013-08-04. Retrieved 2024-12-08.
This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
External links
Media related to Gymnocalycium castellanosii at Wikimedia Commons
Data related to Gymnocalycium castellanosii at Wikispecies
| Taxon identifiers | |
|---|---|
| Gymnocalycium castellanosii |
|