Usnea in Europe

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

	select one of the choices
	Cortex very thick (10–17%), medulla very thin (6–14%), central axis thick (40–65%)
	Proportions of inner layers of the thallus different (cortex mainly thinner and medulla much thicker)

	current step: 30; previous step: 29 go back

	start again other keys

	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