| Acanthocalycium thionanthum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Acanthocalycium |
| Species: | A. thionanthum |
| Binomial name | |
| Acanthocalycium thionanthum (Speg.) Backeb. 1935 | |
Acanthocalycium thionanthum is a species of Acanthocalycium from Argentina. [1]
Acanthocalycium thionanthum usually grows individually with spherical to short cylindrical, dark green to green-grey shoots and reaches a height of up to 12 centimeters with a diameter of 10 centimeters. There are 9 to 15 round ribs that are slightly notched and bumpy. From the elliptical areoles arise submissive, gray thorns that have a darker tip. There are 1 to 4 central spines, which can also be absent, and 5 to 10 radial spines.
The somewhat bell-shaped flowers are bright yellow to red or white. They have a length of up to 4.5 centimeters and have the same diameter. Your pericarpel and the flower tube are covered with dark pointed scales and brown to white hair and bristles. The spherical, hard-fleshed fruits tear open and reach a diameter of up to 1 centimeter.
| Image | Scientific name | Distribution |
|---|---|---|
 | Acanthocalycium thionanthum subsp. glaucum (F.Ritter) Lodé | Argentina |
 | Acanthocalycium thionanthum subsp. ferrarii (Rausch) Schlumpb. | Argentina (Tucumán). |
 | Acanthocalycium thionanthum subsp. thionanthum | Argentina |
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Media related to Acanthocalycium thionanthum at Wikimedia Commons
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