A fruticose to partly pendent Usnea species, until recently not distinguished at the species level (Clerc & Otte 2018). It is characterized by long isidia (isidiofibrils), usually by the presence of alectorialic acid in soralia (C+ red) and absence of medullary substances in the main branches.
Its overall distribution and ecology are still little known, but it is probably quite a common species of the temperate zone with continental tendencies. It is known from many European countries, from the lowlands to the mountains. But the lichen is so far absent from, e.g., Scandinavia. It grows on deciduous and coniferous trees, most commonly on spruce, sycamore, larch and fir, mainly in forests. Usnea viktoriana might rarely be saxicolous. In the Czech Republic, it is probably common as well, but has so far only been found at few localities, most often on larch trees.
Literature: Clerc P. & Otte V. (2018): Usnea viktoriána (Ascomycota, Parmeliaceae), a new European taxon of the Usnea barbata-dasopoga group, with a key to the shrubby-subpendulous sorediate Usnea species in Europe. – Lichenologist 50: 513–527. Šoun J., Malíček J. & Vondrák J. (2019): Zajímavé nálezy lišejníků v Brdech a na Rokycansku. – Erica 26: 45–64.taxonomic classification:
All records: 8, confirmed 8. One click on a selected square displays particular record(s), including their source(s).