Private Herbarium of Jason Hollinger
(hb. Hollinger)
Taxon: Rhizocarpon geminatum Körb.
Family: Rhizocarpaceae
Determiner: Jason Hollinger (2014-10-09)
ID Remarks: ID certainty: positive
Collector: Jason Hollinger   7728   
Date: 2014-10-09
Locality: United States, Nevada, Pershing County, Humboldt Range, Black Canyon, near top of tall stepped cliff on south side of road just past where road crosses to south side of canyon (~700 m past fork)
40.5404  -118.2025 +-5m.
Elevation: 2105 meters (6904ft)
Habitat: drainage channel high on steep broken north-facing rhyolite cliff
Substrate: granite
Associated Species: Rhizocarpon bolanderi
Notes: areoles strongly convex pinkish-gray, apothecia small with thick black prominent rims, spores 2 per ascus pretty consistently, medulla K+y strong C- KC- I- or I+ red, epihymenium red-brown K+r/v strong
Specimen Images
Record ID: 7ee19435-cc59-433d-8cd2-d1b492c64315
For additional information on this specimen, please contact: Jason Hollinger (
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