Usnea fulvoreagens is very similar to U. glabrescens and was originally described as its variety. It is distinguished by deep, empty soralia, delimited with outstanding cortex, similar to U. perplexans. Its distinction is not supported by molecular data and is commonly recognized as a variety of U. glabrescens. Both species are chemically very variable and require a detailed study.
In Europe, the species usually grows on branches of deciduous trees in humid, cold and open forests. Its distribution in the Czech Republic is not well-known, because it is often not distinguished. Rare recent records are from the Brdy Hills, its foothills and Novohradské hory Mts.taxonomic classification:
All records: 7, confirmed 7. One click on a selected square displays particular record(s), including their source(s).