Private Herbarium of Jason Hollinger (hb. Hollinger)
Lecidea laboriosa Müll.Arg.
Lecideaceae
Jason Hollinger (2018-05-03)
ID certainty: positive
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Jason Hollinger
14950
2016-09-12
United States, California, Inyo County, Mount Whitney, summit
36.5785 -118.293 +-25m.
4400 meters (14432ft)
bare granite alpine peak
granite pebble
thallus endolithic, scurfy white; apothecia clustered densely along microcracks; epihymenium bright aeruginose-black turning slightly greener in K; hymenium ~50um, ~clear, aeruginose; hypothecium dark red-brown on top to medium red-brown lower down continuous with inner exciple; exciple dark blue-brown-black edge, medium red-brown inside, K+ weak violet; spores 8 per ascus, oblong-ellipsoid, ~9-11x3um; TLC 4-O-demethylplanaic (JPH plate 52.5 solvents B' and C on 20180501)