Usnea usnea • usnea barbata · · · Info · Definitions · Characters · · Usnea · · Text Latin · · Script 5 · · Length 2 · · Syllables Definitions · · · (noun) widely distributed lichens usually having a greyish or yellow pendulous freely branched thallus. Synonyms: genus Usnea. · · Noun Definition 1 Characters · · U latin capital letter u U+0055 a latin small letter a U+0061 e latin small letter e U+0065 n latin small letter n U+006E s latin small letter s U+0073