Observation 215977: Aspicilia A.Massal.

When: 2015-08-21

Collection location: Powers Bluff County Park, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
2% (2)
Used references: ID provided by Jason Hollinger
Based on microscopic features: Norstictic present, thallus rimose-continuous and turning green when wet, epihymenium green, paraphyses thin but distinctly moniliform with several globose end cells, hymenium I+r almost immediately, hypothecium I+b turning very dark ~reddish, medulla I-, spores 8 per ascus ~15×10um, conidia ~11-14um — morphologically just like leavata, but with strongly moniliform paraphyses and norstictic instead of stictic acid, seems likely to be an undescribed species

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Jim Bennet’s verdict is no less confusing:
By: Andrew Khitsun (Andrew)
2016-03-10 18:41:13 CST (-0600)

“Specimen has characters of both A.cinerea and A.caesiocinerea: thallus K+y to or. to r.; <8 spores per ascus; paraphyses not moniliform.”

I am totally confused now
By: Andrew Khitsun (Andrew)
2015-09-12 22:12:16 CDT (-0500)

Finally, I was able to grab a decent piece of a specimen. KOH test showed yellowing when applied to upper cortex. From Thomson keys, it must be Aspicilia laevata, but that species is much darker, and has different looking apothecia.

Created: 2015-09-12 21:08:25 CDT (-0500)
Last modified: 2017-03-18 23:21:23 CST (-0600)
Viewed: 42 times, last viewed: 2017-06-20 19:58:37 CDT (-0500)
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