We found 1 definitions of genus usnea from 1 different sources.
Noun |
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genus usnea - widely distributed lichens usually having a greyish or yellow pendulous freely branched thallus | ||
Usnea, genus Usnea | ||
fungus genus includes lichen genera | ||
family usneaceae, usneaceae fruticose lichens having prostrate or erect or pendulous thalli: genera Usnea, Evernia, Ramalina, Alectoria |