Observation 159381: Lecanora subrugosa Nyl.

When: 2013-07-29

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

Who: Andrew Khitsun (Andrew)

Specimen available


Copyright © 2013 Jason Hollinger (jason)
Copyright © 2013 Jason Hollinger (jason)
Copyright © 2013 Jason Hollinger (jason)

Proposed Names

18% (2)
Recognized by sight
-28% (1)
Recognized by sight
61% (2)
Recognized by sight
-11% (2)
Used references: Identified by Jim Bennett

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= Observer’s choice
= Current consensus


Add Comment
Sorry to abuse my admin privileges…
By: Jason Hollinger (jason)
2014-06-01 13:33:17 AST (-0400)

But I couldn’t let this go by. I have no idea what Jim was looking at, but you can see from the three micrographs I just posted that all of the specimens in these photos clearly have abundant large coarse K- crystals in the amphithecium. I stand by my id. This isn’t a subtle character susceptible to misinterpretation!

Sorry I didn’t see this comment
By: Jason Hollinger (jason)
2014-05-23 01:16:46 AST (-0400)

(MO doesn’t notify users who propose names but don’t comment.)

L. subfusca is a European species, I think. L. subfusca group refers to a whole mess of species with well-developed K+y thallus and calcium oxylate crystals in the margin. There are several reported from Wisconsin.

This one had no granules/crystals in the epihymenium, but had both large blocky crystals and coarse granules throughout the margin. That narrows it down to L. argentata, L. subrugosa, L. meridionalis and L. perplexa. The last has very thin indistinct cortex and granular thallus. The third has black apothecia. The first two differ in how verrucose the thallus and apothecial margins are and in how thick the walls of the spores are. I’d call this verrucose and the spores had very conspicuous walls, so I’m going with L. subrugosa.

It’s not listed in WI at this point.
By: Andrew Khitsun (Andrew)
2014-02-09 20:08:25 AST (-0400)

What’s in that group? Are there any other species that were made to belong to or relate to that group.

Created: 2014-02-09 12:32:29 AST (-0400)
Last modified: 2014-06-01 13:31:15 AST (-0400)
Viewed: 78 times, last viewed: 2018-09-19 20:43:29 AST (-0400)
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