Observation 11663: Usnea Dill. ex Adans.

When: 2008-09-29

Collection location: Southeast Portland, Multnomah Co., Oregon, USA [Click for map]

Who: Daniel B. Wheeler (Tuberale)

No specimen available

This apparently abundant in my area lichen, is rather attractive and relatively easy for me to identify from other lichens. It can be rather extensive, up to 2-3 inches from the base to the tips, usually pendant, with distinctive bi-colored branches. Branch base color seems to be aqua-greenish, but with white bands/rings (like a coral snake?), and white scalish things on the stems as well. Found on Quercus palustra and a decorative bi-colored ash tree.


Proposed Names

57% (1)
Recognized by sight
28% (1)
Recognized by sight
86% (1)
Used references: Thanks, Jason!

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= Observer’s choice
= Current consensus


Add Comment
Definitely Usnea
By: Jason Hollinger (jason)
2008-09-30 15:35:33 CDT (-0400)

This is definitely one of the “shrubby” (not “pendent”) Usnea. It looks like one of the “inflated” or “constricted” ones, leading probably to U. glabrata, but I’m far from an expert on this genus.