Observation 95994: Physcia aipolia (Ehrh. ex Humb.) Fürnr.
When: 2012-05-26
Herbarium specimen reported
0 Sequences

Proposed Names

8% (2)
Recognized by sight: on dry branch of apple, aerobiontic
28% (1)
Recognized by sight: not quite good enough photos to be sure this isn’t P. aipolia. Ideally you’d want to do K test in medulla to be sure, anyway: P. stellaris is K-, P. aipolia K+y (both are K+y on the surface).
84% (1)
Recognized by sight: see comments

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Works for me!
By: Jason Hollinger (jason)
2012-06-01 22:53:58 CEST (+0200)
It has to be
By: Gerhard Koller (Gerhard)
2012-06-01 21:05:38 CEST (+0200)

Physcia aipolia. I see tiny white dots on the thalli if I am not erring and I believe the medulla is K y+ but not sure about that at all.

By: Jason Hollinger (jason)
2012-06-01 20:46:00 CEST (+0200)

The only trick is to distinguish between K+ in the medulla and the K+ from the cortex. If you cut/scratch a patch of cortex off exposing the white medulla, try applying KOH solution with needle or toothpick of capillary tube or something very small. Helps to do it under a dissecting scope.

Does the K reaction still work
By: Gerhard Koller (Gerhard)
2012-06-01 20:28:55 CEST (+0200)

on herbarium material?

Created: 2012-06-01 15:27:57 CEST (+0200)
Last modified: 2012-06-01 22:54:09 CEST (+0200)
Viewed: 48 times, last viewed: 2017-06-13 08:30:33 CEST (+0200)
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