Parmelia squarrosa #

Taxon #

Parmelia squarrosa

Organization #

Shield-Like Parmelioids

Identification #

This Parmelia species is isidiate and best separated from the other isidiate species of the genus by having squarrose rhizines. It is similarly grayish green as in other Parmelia species and also bears the hammer marks on the upper surface of the thalli.

Substrate #

most commonly corticolous, also ramicolous, lignicolous, saxicolous

Chemical Tests #

medulla: K+ yellow, C-, KC-, Pd+ yellow or orange (Brodo et al. 2001)