Image: Nature's Thermometers

Description: Rhododendron (Rhododendron maximum), Lackawanna State Forest, Lackawanna County. A cold-hardy species, R. maximum responds to subfreezing temperatures by curling, folding down, and clamping shut its foliage. This action helps protect the shrub from the desiccating effects of cold air. (According to my GPS unit, the air temperature was 9ºF [–13ºC] at the time.)
Title: Nature's Thermometers
Credit: Flickr: Nature's Thermometers
Author: Nicholas A. Tonelli
Permission: This image, which was originally posted to Flickr, was uploaded to Commons using Flickr upload bot on 25 January 2013, 18:12 by Gerry D. On that date, it was confirmed to be licensed under the terms of the license indicated. This file is licensed under the Creative Commons Attribution 2.0 Generic license. You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. https://creativecommons.org/licenses/by/2.0 CC BY 2.0 Creative Commons Attribution 2.0 truetrue
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