Observation 32339: Usnea strigosa (Ach.) Eaton

When: 2010-01-10

Collection location: North Falmouth, Falmouth, Massachusetts, USA [Click for map]

Who: Nathan Wilson (nathan)

Specimen available

This appears to be one of the most common lichens in the North Falmouth area.



Proposed Names

29% (1)
Recognized by sight
92% (2)
Eye3 Eyes3
Used references: Glancing through Lichens of North America (Brody et al.), I this species as a good visual match. The apothecia are paler in my specimen than in the book, but otherwise it seems right.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
The other species is Usnea subfusca
By: Jason Hollinger (jason)
2010-01-23 12:00:51 CST (-0500)

It’s described in the Hinds flora of New England. Both can have white medulla (and thus lack the pinkish coloration your specimen shows). But U. subfusca is black at the base, and “often has annular cracks” ringing the branches. “subfusca” undoubtedly refers to the blackening. It is, however exceedingly rare in New England, known only from a few specimens from Rhode Island, if memory serves me.

Yup, definitely Usnea strigosa.
By: Jason Hollinger (jason)
2010-01-21 10:47:42 CST (-0500)

Only other species like it out east is… I’ve forgotten the name, but it lacks the pinkish color in the apothecia according to what I remember from Brodo’s book.

Created: 2010-01-21 10:37:59 CST (-0500)
Last modified: 2010-01-21 10:37:59 CST (-0500)
Viewed: 81 times, last viewed: 2018-08-14 23:03:38 CDT (-0400)
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