lichen-Parmotrema xanthinum

Parmotrema xanthinum

Parmotrema xanthinum

Parmotrema xanthinum photo by Bob Klips

DIAGNOSTIC FEATURES: Yellow-green, ciliate lobes; marginal isidia cylindrical to branched; collected from rock; compare with P. madagascariaceum which is morphologically identical but with medulla KC+ red.

ECOLOGY: Rather rare on trees and rock in southeastern US; recently found in 5 southern Ohio counties, on the base of sandstone cliffs at all locations.

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