When: 2011-09-18

Collection location: Shorecrest High School, Shoreline, King Co., Washington, USA [Click for map]

Who: Tim Sage (NMNR)

No specimen available

Growing on Lodgepole Pine

Species Lists


Proposed Names

29% (1)
Recognized by sight
0% (2)
Recognized by sight
61% (2)
Recognized by sight: soredioid isidia scattered over surface, instead of excavate soredia along cracks

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= Observer’s choice
= Current consensus


Add Comment
This seems to be relatively common along the coast
By: Jason Hollinger (jason)
2011-09-24 18:53:09 BST (+0100)

There are a few isidiate Parmelia, including P. saxatilis and P. fraudans, but both of those typically grow on rock. P. fraudans also has usnic acid in the isidia. P. saxatilis has shiny isidia with obvious cortex while P. hygrophila and P. fraudans both have soft, dull-looking granular “isidia”.