When: 2012-03-25

Collection location: Ableman’s Gorge State Natural Area, Wisconsin, USA [Click for map]

Who: Andrew Khitsun (Andrew)

Specimen available


Proposed Names

57% (1)
Used references: ID provided by Jim Bennett

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= Observer’s choice
= Current consensus


Add Comment
Well darn!
By: Jason Hollinger (jason)
2014-09-28 18:52:02 EDT (-0400)

You’re causing me to question my faith!

Jim Bennett tested medula K+Y→OR and returned ID X.plittii
By: Andrew Khitsun (Andrew)
2014-09-28 18:16:44 EDT (-0400)
Tested that Xanthoria few days ago.
By: Andrew Khitsun (Andrew)
2012-03-26 18:52:44 EDT (-0400)

So my K should be OK :-)

Wait until you see proper K+ test
By: Jason Hollinger (jason)
2012-03-26 02:59:02 EDT (-0400)

There’s no way to know this ahead of time, but trust me, it’s not subtle when it happens. …Assuming your KOH solution is good! I’m reminded of a world acclaimed lichenologist who recently misidentified one of my specimens this winter because of reagents that had gone “off”. It happens. We should all keep a stack of test subjects at hand to verify our reagents. You posted a good specimen of Parmotrema hypotropum recently. Or Parmelia. If you ever find any of those in abundance, grab a handful. They both have excellent K+y-r reactions. Or you could grab some Xanthoria, too.

Isidiate, lower surface pale, medula K-
By: Andrew Khitsun (Andrew)
2012-03-25 22:13:39 EDT (-0400)

Again, it was very difficult to test with K – I have to learn to understand the colors. Medula didn’t seem to change much, except initial pale yellowing, but the lower surface was looking greenish-yellowish when treated with K. So maybe it’s X.plittii?