Besides white leprous thallus also see some pale brown squamulous thallus and some darker brown thallus. Not sure what is associated with these apothecia. (Reluctant to do more as specimen is quite small.)
a possibility (rare and high arctic) Lecanora leptacina
hope someone can suggest what this might be
microscopic features didn’t post -
spores 8/ascus ave 14×6u
thick paraphs – ca. 4u
Nostoc on surface
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Thanks again. I’ll try to get back to this, including ascus stain. Want to figure it out because I find it very attractive on the moss.
The white pseudo-leprose thallus looks like Lepraria neglecta. Certainly unrelated in any case. My opinion.
It’s not uncommon to find stray Nostoc on the surface of lichens in such habitat. That may also be unrelated. I can’t quite make out the algae within the apothecial margins. It looks “grass green” but it’s hard to be sure.
Ascus stain is probably the next step? Do you have a British Flora? Its generic key is probably your best hope. Although it sounds like you have some additional unpublished keys for the Pacific Northwest which I don’t have access to. Not sure Thompson’s Arctic Lichens vol 2 will help much,but it may be worth a quick try, too.
Created: 2014-11-06 13:20:59 PST (-0800)
Last modified: 2014-11-06 13:28:50 PST (-0800)
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