English: Old man's beard; Methuselah's beard lichen.
Synonym: Usnea longissima.
Clades:
Parmeliaceae.
Region: Europe, Asia, and North America.
Habitat: boreal forests, coastal woodland; on old trees, deciduous or coniferous, especially spruce.
Ecology: threatened
MycologyLichen; fruticose; with very long stems; with short, even side branches; longest lichen in the world.
Stems:15 to 30 cm long, sometimes much longer.