Parodia tenuicylindrica

Parodia tenuicylindrica is a species of cactus from the genus Parodia. The small green cacti have yellow and red-brown spines, white wool and yellow flowers. They produce yellow-green fruit, and black seeds. P. tenuicylindrica can be found growing individually in Rio Grande do Sul, Brazil.

Parodia tenuicylindrica
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Core eudicots
Order:
Caryophyllales
Family:
Cactaceae
Genus:
Parodia
Species:
P. tenuicylindrica
Binomial name
Parodia tenuicylindrica
(F.Ritter) D. R. Hunt
Synonyms[1]
  • Notocactus minimus Frič & Kruizinger ex Bruining 1940
  • Notocactus tenuicylindricus F.Ritter 1970

Taxonomy

The species was originally described as Notocactus minimus by Frič & Kruizinger in 1940, based on a description by Bruining. It was later described as Notocactus tenuicylindricus by Friedrich Ritter.[1] Despite objections from hobbyists (among whom Notocactus species were popular) Notocactus (and others) were synonymised under Parodia.[2] In 1997, based on Ritter's earlier description, D. R. Hunt classified the species as Parodia tenuicylindrica.[1]

Description

P. tenuicylindrica are cylindrical cacti which are green to blue-green.[1] In height, they are 4 to 8 centimetres (1.6 to 3.1 in) and are from 2 to 3 centimetres (0.79 to 1.18 in) in width.[1] The plants have 13-21 notched and tuberculate ribs.[1] On top of the tubercles, there are areoles with white wool. The species has straight and stout spines; the radial spines, of which there are between ten and fifteen, are pale yellow, and between 3 and 4 millimetres (0.12 and 0.16 in) in length, while the 2-4 red-brown central spines are between 3 and 6 millimetres (0.12 and 0.24 in) long.[1] The species produces lemon yellow flowers (which are up to 4.3 centimetres (1.7 in) long) and greenish-yellow fruits. The seeds are black oblongs with tubercles.[1]

Distribution

P. tenuicylindrica can be found growing solitarily in Rio Grande do Sul, Brazil.[1] It is currently classified as Endangered (EN) on the IUCN Red List, with major threats reported to be fires, cattle grazing due to trampling, agriculture, and forestry.

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References
  1. Anderson, Edward F. (2001). The cactus family. Timber Press. p. 555. ISBN 978-0-88192-498-5.
  2. Eggli, U.; Nyffeler, R. (1998). "Proposal to Conserve the Name Parodia against Frailea (Cactaceae)". Taxon. 47 (2): 475–6. doi:10.2307/1223792. ISSN 0040-0262.
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