Usnea

thought it would be easy - have specimen and looked at several references and many photos but still can't decide between several species

 

Daphne Fisher Stone 2018 Usnea in the Pacific Northwest, Aide Memoire; Northwest Lichenologists

 

McCune, Bruce, and Geiser, Linda (2009) Macrolichens of the Pacific Northwest, Second Edition

 

www.waysofenlichenment.net/lichens/Usnea/

 

lichens.twinferntech.net/pnw/specieslist.shtml#U

 

my lichen photos by genus - www.flickr.com/photos/29750062@N06/collections/7215762439...

 

my photos arranged by subject, e.g. mountains - www.flickr.com/photos/29750062@N06/collections

 

Done