Notes: I couldn’t decide between Pleopsidium flavum and Acarospora contigua for this neon yellow lichen. I cannot yet differentiate between dwarf fruticose lichens and crustose, but arrived at these two identifications by elimination of “Sterile crustose lichens,” and looking at the pictures in the Lichens of NA book.
I cut the areoles up extensively, and found no apothecia, which is why I do not think it is Acarospora, which, in the Lichens of the Sonoran Desert Region, is described to have one apothecium per areole. However, I did seem to find Pycnidia with ellipsoid conidia.
This lichen was found growing on serpentine rock, on an arid, exposed hillside.
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Created: 2009-12-06 13:27:11 PST (-0800)
Last modified: 2009-12-06 13:27:11 PST (-0800)
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