Hypogymnia physodes #

Taxon #

Hypogymnia physodes

Organization #

Shield-Like Parmelioids

Identification #

A whitish to light green tube lichen which does not become so browned as in many other species, especially as in the H. austerodes group. Lacking isidia but proucing soredia from labriform soralia at the lobe tips and only very rarely producing apothecia. When growing on broader surfaces it can form nice shield or rosette-shaped thalli, more irregular when on twigs and branches.

Substrate #

ramicolous, corticolous, rarely terricolous, bryocolous, or saxicolous (CLH)

Chemical Tests #

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

Notes #

A ubiquitous species on the Alaska mainland and throughout the SE Region.