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Monk's hood lichen (Hypogymnia physodes), a very common lichen growing epiphyttic on threes. Used as an indicator for air pollution, and for dyeing yarn.

Stock Photo:
Image ID: 53075473
Release Information: N/A
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Small
500x350 6.9"x4.9" (72dpi) 128 KB
Med
1000x699 3.3"x2.3" (300dpi) 430 KB
Large
3000x2098 10.0"x7.0" (300dpi) 1.9 MB
Super
6000x4196 20.0"x14.0" (300dpi) approx.5.4 MB
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