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Parmeliaceae
Usnea articulata Growth type fruticose Chemical results: K-, C-, KC-, P+ red Can be locally common in south and west on well-lit hedges and trees, very rarely found on rocks and dunes. Very sensitive to SO2 pollution. Often without distinct attachment, probably mainly wind distributed. BLS conservation evaluation: NT P Eng Wa IR Long grey-green thallus, the main branches usually +/- smooth, older branches with scattered pseudocyphellae. Branches constricted to central core forming sausage-like segments. Infertile in Britain and Ireland. Young specimens can resemble Usnea flammea, K+ yellow-red |
Usnea articulata
West Dorset. November 2013