Polaskia
Polaskia chichipe
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Cactaceae
Subfamily: Cactoideae
Tribe: Echinocereeae
Genus: Polaskia
Backeb.
Species
Synonyms

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]

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:

Extant Species

Species as of 2021:[3]

ImageScientific nameCommon NameDistribution
Polaskia chendechende, chinoaOaxaca & Puebla Mexico
Polaskia chichipechichipe, chichibe, chichitunaOaxaca & Puebla Mexico

References

  1. ↑ Anderson, Edward F.; Eggli, Urs (2005). Das große Kakteen-Lexikon (in German). Stuttgart. ISBN 978-3-8001-4573-7. OCLC 181456857.{{cite book}}: CS1 maint: location missing publisher (link)
  2. ↑ "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.
  3. ↑ 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.
  • Media related to Polaskia at Wikimedia Commons
  • Data related to Polaskia at Wikispecies


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