<i><a href="//commons.wikimedia.org/wiki/Pinus_rigida" title="Pinus rigida">Pinus rigida</a></i> on Blue Ridges Parkway, North Carolina. Tree at right edge with shorter needles probably <i><a href="//commons.wikimedia.org/wiki/Pinus_pungens" title="Pinus pungens">P. pungens</a></i>.
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/soilscience/">Soil-Science.info on Flickr</a> (Dr. David Lindbo of the Department of Soil Science at NC State University)
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