Usnea in Baltic countries

	Key to the Usnea species in the Baltic countries
	Identification key of 16 species, maximum length – 17 steps

	select one of the choices
	Medulla and central axis usually pink, C+ pale yellow
	Medulla and central axis always white, C-

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	Species in the key articulata \| barbata \| ceratina \| chaetophora \| dasypoga \| diplotypus \| florida \| fulvoreagens \| glabrata \| glabrescens \| hirta \| lapponica \| longissima \| subfloridana \| substerilis \| wasmuthii