Observation 50365: Physconia detersa (Nyl.) Poelt

When: 2010-05-20

Collection location: Trois-Rivières, Quebec, Canada [Click for map]

Who: Chris Parrish (kitparrish)

No specimen available

Species Lists



Proposed Names

28% (1)
Used references: Brodo, Sharnoff, and Sharnoff, 2001, pp.560-566
56% (1)
Recognized by sight: marginal soredia

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Jason Hollinger (jason)
2010-08-15 20:31:26 CDT (-0400)

Only other plausible option would appear to be P. enteroxantha, but there’s always at least a hint of yellowishness. Note, by the way, the secalonic acid (or whatever it is) in enteroxantha and related species is fairly strongly UV+y. Very handy if testing a large number of specimens.

Created: 2010-08-15 19:24:47 CDT (-0400)
Last modified: 2010-08-15 20:29:13 CDT (-0400)
Viewed: 258 times, last viewed: 2018-04-12 08:51:38 CDT (-0400)
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