Observation 204934: Ochrolechia parella (L.) A. Massal.

When: 2015-05-13

Collection location: Petenwell Rock, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

57% (1)
Recognized by sight
68% (2)
Eye3 Eyes3
Recognized by sight: esorediate, eisidiate, pruinose disc, apo margin very thick and without cortex
Used references: 2009 British flora
Based on microscopic features: epithecium brown under scope
Based on chemical features: K+y-o, UV+w-p, C- thallus

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
If it’s O.parella, here is very similar picture of it:
By: Andrew Khitsun (Andrew)
2018-04-15 06:09:36 EEST (+0300)
By: Jim Bennett (Lichenman)
2018-04-13 21:08:27 EEST (+0300)

Brodo in 1991 said this species is not in N America, yet there are many records in CNALH saying it is. The notation in the NA checklist may be incorrect. The lignicolous substrate (fence) is unusual as it is usually on rock. I was unable to get spores from the material to confirm. If this really is O. parella it is a state record. There is a record from nearby Michigan. When I first saw the specimen I thought it was a Pertusaria, which it apparently was once classified as. The apothecium mounted in water that I examined bled an unknown bright yellow-orange dye under the cover slip.

On wooden fences. Lecanora caesiorubella?
By: Andrew Khitsun (Andrew)
2015-05-26 01:17:19 EEST (+0300)

Created: 2015-05-25 05:22:34 EEST (+0300)
Last modified: 2018-04-15 06:09:36 EEST (+0300)
Viewed: 64 times, last viewed: 2018-04-16 17:24:18 EEST (+0300)
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