April 20, 2013
Brown-eyed Sunshine ~ Vulpicida canadensis ~ Cetraria canadensis
In today’s steady rain, a couple of miles up Buffalo Bill Creek, the only “sunshine” I saw was this brightly colored lichen. Its yellow color is derived from two poisonous substances, pinastric and vulpinic acids which occur only in lichens and are thought to deter grazing by insects and other invertebrates. Pretty, isn’t it!
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