Parmeliopsis ambigua #

Taxon #

Parmeliopsis ambigua

Organization #

Shield-Like Parmelioids

Identification #

Parmeliopsis ambigua is a much more yellow color than any other shield or rosette-like Parmelioid lichen in Alaska. This species always produces yellowish soredia at maturity but only rarely produces apothecia with brown discs. The lobe tips are inconspicuously browned. The other species of the genus P. hyperopta is a gray lichen that is not at all yellowish.

Substrate #

corticolous more commonly on conifers than deciduous trees, ramicolous, commonly lignicolous

Chemical Tests #

upper cortex: K- or K+ yellow, C-, KC+ yellow, Pd-, UV-; medulla: K-, C-, KC-, Pd-, UV+ white (CLH)

Notes #

Ubiquitous on the mainland of Alaska where there are trees (CLH).

Photos #