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Flavopunctelia soredica ("powder-edged speckled greenshield") on oak bark on a mountaintop in Arizona. The Navajo use this lichen as a dye source. next portrait previous portrait Photograph copyright Stephen/Sylvia Sharnoff
Flavopunctelia soredica ("powder-edged speckled greenshield") on oak bark on a mountaintop in Arizona. The Navajo use this lichen as a dye source.
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Photograph copyright Stephen/Sylvia Sharnoff