File:2014-08-31-15.22.25 ZS PMax-1 (15099428392).jpg

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Rebutia pseudodeminuta—Scarlet Crown Cactus. A cactus with many names; a situation, unfortunately, not uncommon for cactus. The genus Rebutia is considered polyphyletic, but wide differences exist among taxonomists who have studied the genus. A 2011 study trying to make sense of DNA analyses renamed the species Aylostera buiningiana but the name is not widely accepted. The authoritative Plant List maintained by Kew uses Rebutia pseudodeminuta. Literature from 1972 and later, including the label for this specimen uses Rebutia buiningiana. Those interested in such matters should Google each of these three names plus the Botany 101-level Wikipedia article for the genus Rebutia. The species, widely available in the cactus trade, comes from Northern Argentina and adjoining Bolivia.

The flowers of this specimen measure 40 mm, the anthers & stamens together are 5 mm, and the spines are 5 mm (each pair of spines are thus 10 mm.)

The plant is located in a private cactus collection in Berkeley, CA.
Date
Source 2014-08-31-15.22.25 ZS PMax-1
Author John Rusk from Berkeley, CA, United States of America

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This image was originally posted to Flickr by John Rusk at https://flickr.com/photos/12303842@N00/15099428392. It was reviewed on 25 May 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

25 May 2017

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current15:29, 25 May 2017Thumbnail for version as of 15:29, 25 May 20173,379 × 2,534 (7.22 MB)Josve05a (talk | contribs)Transferred from Flickr via Flickr2Commons

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