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82 beard lichens species
Usnea longissima
Usnea strigosa
Usnea hirta
Usnea cavernosa
Usnea dasopoga
Usnea subfloridana
Usnea perplexans
Usnea quasirigida
Usnea rubicunda
Usnea cornuta
Usnea barbata
Usnea trichodea
Usnea mutabilis
Usnea scabrata
Usnea flavocardia
Usnea subgracilis
Usnea glabrata
Usnea lambii
Usnea pacificana
Usnea ceratina
Usnea intermedia
Usnea silesiaca
Usnea sphacelata
Usnea alpina
Usnea merrillii
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