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An unidentified crustose lichen An unidentified crustose lichen growing on the bark at the base of a large Quaking Aspen (Populus tremuloides). It was the only one seen on this tree and no others were found on any nearby trees. The thallus is thick, smooth but with cracks. There do not appear to be apothecia but irregularly shaped soralia with yellow soredia are present. There are a few dark black spots mixed in among the soralia. Geotagged,Spring,United States,crustose lichen,forest,gray lichen,populus tremuloides,quaking aspen,unidentified,yellow soredia Click/tap to enlarge Promoted

An unidentified crustose lichen

An unidentified crustose lichen growing on the bark at the base of a large Quaking Aspen (Populus tremuloides). It was the only one seen on this tree and no others were found on any nearby trees. The thallus is thick, smooth but with cracks. There do not appear to be apothecia but irregularly shaped soralia with yellow soredia are present. There are a few dark black spots mixed in among the soralia.

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View Gary B's profile

By Gary B

All rights reserved
Uploaded Apr 14, 2019. Captured Apr 13, 2019 15:19 in 4408 Miller Rd, Barnum, MN 55707, USA.
  • Canon EOS Rebel T6
  • f/5.6
  • 1/166s
  • ISO800
  • 100mm