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Parmeliaceae
Platismatia glauca Growth type foliose Chemical results: Upper cortex: K+ yellow, UV- Found on acid-barked trees (often on horizontal branches) also on upland rocks and soil. Very variable. Blue-grey to green-brown thallus, +/- erect, tufted lobes with crisped, incised margins that can be isidiate or sorediate. Rhizines are usually absent. Apothecia rare. Platismatia norvegica has broader, rounder lobes with a network of low, sharp ridges. Rare, only found in north and north-west Scotland |
Platismatia glauca
December 2012