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South America Pond Road; identified by Mark Rahill
"On Trunks and branches of Umbellularia californica and Quercus agrifolia. Boulder-strewn mixed oak wodland adjacent to Pseudotsuga menziesii forest and open grassland. "
On Quercus sp.
Net-marked parmelia (Parmelia sulcata), or Shield lichen, is a lichen in the family Parmeliaceae. It is very tolerant of pollution and is widespread, making it one of the most common lichens.
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