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Peniophora rufa Peniophora rufa on the trunk of a fallen Quaking Aspen (Populus tremuloides) tree. These individuals are plumped up because it had just rained a few hours earlier. Geotagged,Peniophora rufa,Populus tremuloides,Quaking Aspen,Red Brain Fungus,Spring,United States Click/tap to enlarge

Peniophora rufa

Peniophora rufa on the trunk of a fallen Quaking Aspen (Populus tremuloides) tree. These individuals are plumped up because it had just rained a few hours earlier.

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Peniophora rufa is a distinctive crust fungus that forms small, bright red, cushion-shaped structures on the dead but still bark-covered branches and trunks of aspens, including quaking aspen and big-toothed aspen. Although a microscope is probably not needed in order to identify Peniophora rufa successfully, the fungus has fascinating microscopic features, including prominent gloeocystidia.

Similar species: Russulales
Species identified by Gary B
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By Gary B

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Uploaded Mar 14, 2019. Captured May 9, 2014 16:29 in 4408 Miller Rd, Barnum, MN 55707, USA.
  • Canon EOS DIGITAL REBEL
  • f/5.0
  • 1/60s
  • ISO400
  • 100mm