Observation 212171: Physcia dubia (Hoffm.) Lettau

When: 2015-07-28

Collection location: Washington Island, Door Co., Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

57% (1)
Eye3 Eyes3
Recognized by sight: Id provided by Jason Hollinger
Based on microscopic features: Medulla K-, lower cortex prosoplect.
29% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Jim Bennett identiifed it as P.subtilis
By: Andrew Khitsun (Andrew)
2016-01-20 21:29:47 -05 (-0500)

The lobes look oddly wide for P.subtilis – although everything looks odd, sometimes to the point of looking surreal, in Door county.

I am not sure I identified it correctly
By: Andrew Khitsun (Andrew)
2015-08-07 19:25:08 -05 (-0500)

Small thallii (about 1/2 inch), white lower surface. K+ greenish both medulla and cortex, although can’t guarantee the medulla since it’s almost non-existent. My other collections of P.dubia had upturned lobes.

Created: 2015-08-07 19:06:09 -05 (-0500)
Last modified: 2017-03-18 22:28:27 -05 (-0500)
Viewed: 36 times, last viewed: 2017-06-20 12:32:57 -05 (-0500)
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