Private Herbarium of Jason Hollinger (hb. Hollinger)
Porpidia contraponenda cfr.
Jason Hollinger (2017-08-24)
ID certainty: to genus
Jason Hollinger
17567
2017-08-24
United States, Idaho, Idaho County, Slate Creek Lookout
45.581 -116.1547 +-5m.
2229 meters (7311ft)
open granite knoll in montane conifer forest on top of ridge
shaded vertical granite
thallus areolate, pale gray, K- C- KC- UV- or weak KUV- P- I-; apothecia weakly to more strongly white pruinose, sessile from start, rims black and epruinose; epihymenium ~greenish black; hymenium ~50um, I+b-gold; subhymenium brownish; hypothecium dark brown; exciple dark red-brown in all but thinnest sections, POL- K- no bubbles C- I-; spores 8 per ascus, halonate, ellipsoid, ~12x5um but none seen free of ascus