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Very small lichen living on a rusty old ...
Lichen (?) of different shades of green on ...
This picture was taken at the top of the Lac des Cygnes mountain in the ...
Leafy lichen with white tendrils underneath
Yellow lichen growing on a rock, most ...
Gorgeous green stalked lichen, fruiting ...
growing on top of exposed, east facing wall. I'm not sure whether the black ...
limestones with this white lichen called ...
When it dries out it curls up, showing mostly the white underside then, when ...
White to Pink to Red in color. Most often seen on North side of Oak trees on ...
Very pale compared to most Rhizocarpon I find. Usually they are almost ...