Usnea in Europe

	Key to the Usnea species in Europe
	Identification key of 31 species, maximum length – 37 steps

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	Apical parts characteristically twisted; numerous soralia densely close to each other, remaining ± superficial
	Apical parts not characteristically twisted; soralia usually not densely close to each other, may become deeply concave

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	Species in the key articulata \| barbata \| cavernosa \| ceratina \| chaetophora \| cornuta \| dasaea \| dasypoga \| diplotypus \| esperantiana \| flammea \| flavocardia \| florida \| fragilescens \| fulvoreagens \| glabrata \| glabrescens \| hirta \| intermedia \| lapponica \| longissima \| mutabilis \| praetervisa \| rubicunda \| schadenbergiana \| silesiaca \| subcornuta \| subfloridana \| subscabrosa \| substerilis \| wasmuthii