File:Cottonthorn, Tetradymia axillaris var. axillaris (30654349627).jpg

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cottonthorn, Tetradymia axillaris var. axillaris, California, White Mountains, McAfee Creek, Fishlake Valley drainage, elevation 1647 m (5405 ft).

The common name of this desert shrub refers to the dense cottony hairs on the young spines, which later shed their hairs. Anatomically the spines form from the primary leaves of the plant (true thorns come from branches instead). The green leaves that you see on the plant are actually secondary leaves that develop after the primaries.

Tetradymia axillaris is nearly endemic to the western and northern Mojave Desert of eastern California, southern Nevada, and southwest Utah below about 2300 meters (7550 feet) elevation. It extends only shortly into the surrounding mountains and Great Basin desert. The variety axillaris, characterized by its smooth green phyllaries, is even more restricted, found only in the northern Mojave - southern Great Basin transition zone of southern Nevada and adjacent California.
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Source cottonthorn, Tetradymia axillaris var. axillaris
Author Jim Morefield from Nevada, USA
Camera location37° 38′ 04.96″ N, 118° 05′ 38.36″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo

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This file is licensed under the Creative Commons Attribution-Share Alike 2.0 Generic license.
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This image was originally posted to Flickr by Jim Morefield at https://flickr.com/photos/127605180@N04/30654349627 (archive). It was reviewed on 29 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-sa-2.0.

29 December 2019

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Date/TimeThumbnailDimensionsUserComment
current03:07, 29 December 2019Thumbnail for version as of 03:07, 29 December 20193,648 × 2,736 (6.13 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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