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Parmeliaceae
Evernia prunastri Growth type foliose (though can appear to be fruticose).Chemical results: K+ yellow Occurs on acid-barked deciduous trees and fences, occasionally on rocks. The lobes are strap-like and flattened, the upper surface greyish-white to yellow-green with netted ridges that can become sorediate. Lower surface is +/- white. The reddish-brown apothecia are rarely produced. Host to the lichenicolous fungus Unguiculariopsis lettaui Similar: Pseudevernia furfuracea, lobes often blackish below, upper surface isidiate. Can be confused with Ramalina farinacea (usually K-) |
Evernia prunastri