Collection location: Spencer Island, Snohomish Co., Washington, USA [Click for map]
on dead Alnus rubra in area of relatively poor air quality
Would like some help with this one, as don’t know if I am on the right track. Doesn’t clearly key out to species.
thought exciple appeared Iodine + pale violaceous but this was very weak
|I’d Call It That||3.0||0.00||0|
sum(score * weight) /
(total weight + 1)
Thank you for the reference.
I have the same problems.
For Biatora it looks like Printzen is the authority:
Printzen, C. 1995. Die Flechtengattung Biatora in Europa. Bibliotheca Lichenologica, 60, J. Cramer, Berlin, Stuttgart. 275 pp.
The Bibliotheca Lichenologica seem to be particularly hard to hold of though. (And I can’t read German very well, anyway.)
Ekman, S. 1996. The corticolous and lignicolous species of Bacidia and Bacidina in North America. Opera Botanica 127: 1-148. [RLL List #164 / Rec. #4795]
Where is the Ekman treatment, and why can’t I find a reference? (Can’t connect with lichen literature site today.)
Some authors use upper hymenium in place of epihymenium. The funny thing is Curtis decries this confusion regularly, but for some reason chose to use “upper hymenium” which I thought was clearly in the minority. Maybe it’s a European thing.
Those keys only cover one area in central BC. Granted there is a lot of diversity in that area, so there is huge overlap with the entire greater area. Still it’s entirely possible you have something not included in those keys. It was worth a try!
Wish I had access to the Ekman treatment. I think that’s still the authority.
not sure what “upper hymenium” exactly refers to in Wells Gray key, but what I would call the epihymenium is POL+ in H2O (see photo), POL- in KOH
On Wells Gray key, if “upper hymenium” POL+ then key gives B. pallens spores 9-18×2-3 (which is too narrow) 3-septate (some other characteristics also not consistent with specimen)
if “upper hymenium” POL- then keys (exciple IKI-) to B. nobilis spores (5.0-)5.5-7.2(-8.5) x (10.0-)12.5-18.3(-21.5) (0-)3-septate, known western B.C. WA and OR, but only on conifer trunks in mixed Pseudotsuga forests (very different substrate and habitat)
Created: 2012-03-05 17:52:58 WAT (+0100)
Last modified: 2012-03-05 18:13:17 WAT (+0100)
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