| Matucana ritteri | |
|---|---|
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| Conservation status | |
 Critically Endangered (IUCN 3.1) | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Genus: | Matucana |
| Species: | M. ritteri |
| Binomial name | |
| Matucana ritteri Buining 1959 | |
Matucana ritteri is a species of Matucana found in Peru.
Description
Matucana ritteri usually grows solitary with flattened spherical, glossy dark green shoots and reaches a height of 3 to 5 cm (1.2 to 2.0 in) with a diameter of 5 to 10 cm (2.0 to 3.9 in). There are twelve to 22 blunt ribs present. The straight to slightly curved brownish-black spines turn gray with age. The one to five central spines are 2 to 4 cm (0.79 to 1.57 in), the seven to 14 radial spines 1 to 3 cm (0.39 to 1.18 in) long.
The crooked, crimson flowers are 7 to 9 cm (2.8 to 3.5 in) long and have a diameter of 4.5 to 5 cm (1.8 to 2.0 in). The bright red and green, scaly fruits reach a diameter of 1 to 1.5 cm (0.39 to 0.59 in).
Distribution
Matucana ritteri is common in the region of La Libertad in Peru, near Otuzco at altitudes of 2500 meters.
Taxonomy
The first description was in 1959 by Albert Frederik Hendrik Buining. The specific epithet ritteri honors the German cacti specialist Friedrich Ritter. Nomenclature synonyms are Submatucana ritteri (Buining) Backeb. (1962) and Borzicactus ritteri (Buining) Donald (1971).
References
- "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species. 2011-05-07. Retrieved 2023-08-27.
- Anderson, Edward F.; Eggli, Urs (2005). Das grosse Kakteen-Lexikon (in German). p. 421. ISBN 3-8001-4573-1.
- "Au Cactus Francophone :". Au Cactus Francophone (in French). Retrieved 2023-08-27.
External links
Media related to Matucana ritteri at Wikimedia Commons
Data related to Matucana ritteri at Wikispecies
