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Polaskia (named after American amateur Charles Polaski) is a genus of tree-like cacti reaching 4–5 m high, comprising 2 species. Both present primitive characteristics, but Polaskia chichipe is nearer to Myrtillocactus while Polaskia chende is nearer to Stenocereus. The genus is found in the Mexican states of Puebla and Oaxaca.[1][2]
| Polaskia | |
|---|---|
 | |
| Polaskia chichipe | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Cactaceae |
| Subfamily: | Cactoideae |
| Tribe: | Echinocereeae |
| Genus: | Polaskia Backeb. |
| Species | |
| |
| Synonyms | |
| |
Description
The tree-like, highly branched species of the Polaskia genus reach heights of growth of between 4 and 5 meters and form dense crowns 3 to 4 meters above the ground. Its bright green shoots repeatedly fork and grow 1 to 2 meters long. The 7 to 12 ribs are sharply triangular in cross-section. On their edges, these wear 3 to 4 millimeters wide, shield-shaped areoles at close intervals. The central spine may be absent. The 3 to 8 radial spines are greyish to blackish.
The urn- to bell-shaped flowers are white to creamy white to yellowish green. They open day and night and are between 4 and 6 centimeters long.
The red, spherical fruits with a diameter of 2 to 4 centimeters are juicy and edible. The small seeds it contains are pear- to ovoid-shaped and dull black.
Synonymy
The following genera have been brought into synonymy with Polaskia:
- Chichipia Backeb. (nom. inval.)
- Heliabravoa Backeb.
Extant Species
Species as of 2021:[3]
| Image | Scientific name | Common Name | Distribution |
|---|---|---|---|
 | Polaskia chende | chende, chinoa | Oaxaca & Puebla Mexico |
 | Polaskia chichipe | chichipe, chichibe, chichituna | Oaxaca & Puebla Mexico |
References
- Anderson, Edward F.; Eggli, Urs (2005). Das große Kakteen-Lexikon (in German). Stuttgart. ISBN 978-3-8001-4573-7. OCLC 181456857.
- "On-line Guide to the positive identification of Members of the Cactus Family". On-line Guide to the positive identification of Members of the Cactus Family. Retrieved 2022-10-25.
- Korotkova, Nadja; Aquino, David; Arias, Salvador; Eggli, Urs; Franck, Alan; Gómez-Hinostrosa, Carlos; Guerrero, Pablo C.; Hernández, Héctor M.; Kohlbecker, Andreas; Köhler, Matias; Luther, Katja; Majure, Lucas C.; Müller, Andreas; Metzing, Detlev; Nyffeler, Reto; Sánchez, Daniel; Schlumpberger, Boris; Berendsohn, Walter G. (2021-08-31). "Cactaceae at Caryophyllales.org – a dynamic online species-level taxonomic backbone for the family". Willdenowia. Botanic Garden and Botanical Museum Berlin, Freie Universitaet Berlin. 51 (2). doi:10.3372/wi.51.51208. ISSN 0511-9618.
External links
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На других языках
- [en] Polaskia
[es] Polaskia
Polaskia es un género de cactus casi árboles que alcanzan 4-5 metros de altura, con dos especies. Ambas presentan características primitivas, pero Polaskia chichipe está más cerca de Myrtillocactus mientras que Polaskia chende está más cerca de Stenocereus. El género se encontró en el estado mexicano de Puebla y Oaxaca. Fue nombrado en honor del botánico amateur estadounidense Charles Polaski. Es una especie endémica de la región Tehuacán-Cuicatlán. En la zona de Zapotitlán se pueden encontrar individuos de esta especie en los alrededores de Los Reyes Metzontla y de San Luis Atolotitlán.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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