Rock Tripe Lichen

Uploaded 19 Jun 2013
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© David Lee Tiller
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Photo Info
UploadedJune 19, 2013
TakenJune 18, 2013
ModelCanon EOS 60D
Exposure1/40 sec at f/4
FlashNo Flash
Focal Length24 mm
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Photo license: © All rights reserved

Rock Tripe Lichen - Some species of Rock Tripe Lichen are used as dyes. Common lichens yield intense purple dyes: rock tripe (Umbilicaria Americana and U. mammulata), and toadskin lichen (Lasallia papulosa). They’re most common on rock faces with a 60- to 95-degree slope; any gentler and the rock will host mosses instead, but too much of an overhang won’t let them get established. Despite their drab gray, brown, or black coloring, these lichens and others have yielded valuable and brilliant dyes throughout history.

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