Observation 100088: Lepraria finkii (B. de Lesd.) R.C. Harris

When: 2012-07-08

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

Who: Andrew Khitsun (Andrew)

Specimen available

Proposed Names

29% (1)
Recognized by sight
57% (1)
Eye3 Eyes3
Based on chemical features: TLC by Jason Hollinger

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
That’s probably right
By: Jason Hollinger (jason)
2012-07-12 19:40:28 CDT (-0400)

I’ve gotten a range of colors from orange to almost red for P test of fumarprotocetraric acid. Seems to depend on concentration of the acid… and maybe concentration of the reagent in your case? The important ones to distinguish are the pure yellow reactions from thamnolic and psoromic acids. The rest are all just sort of ambiguous orangish-reddish.

P+ orange (almost)
By: Andrew Khitsun (Andrew)
2012-07-11 20:19:17 CDT (-0400)

I tested it with P prepared with 91% Isopropyl Alcohol (instead of the stuff usually used for this, since I lack denaturated alcohol). My results were slightly orangish. No results observed with K, KC, or C.
It grows on dolomitic limestone of Niagara Escarpment

Created: 2012-07-11 20:13:27 CDT (-0400)
Last modified: 2017-04-03 20:12:52 CDT (-0400)
Viewed: 49 times, last viewed: 2017-07-20 02:18:21 CDT (-0400)
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