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nounany of several eruptive skin diseases characterized by hard thick lesions grouped together and resembling lichens growing on rockstype of:
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nounany thallophytic plant of the division Lichenes; occur as crusty patches or bushy growths on tree trunks or rocks or bare ground etc.type of:
Definition that contains lichen
- evernia lichens of the family Usneaceae having a pendulous or shrubby thallus
- iceland moss lichen with branched flattened partly erect thallus that grows in mountainous and Arctic regions; used as a medicine or food for humans and livestock; a source of glycerol
- genus evernia lichens of the family Usneaceae having a pendulous or shrubby thallus
- alectoria lichens having dark brown erect or pendulous much-branched cylindrical thallus
- cetraria islandica lichen with branched flattened partly erect thallus that grows in mountainous and Arctic regions; used as a medicine or food for humans and livestock; a source of glycerol
- genus alectoria lichens having dark brown erect or pendulous much-branched cylindrical thallus
- iceland lichen lichen with branched flattened partly erect thallus that grows in mountainous and Arctic regions; used as a medicine or food for humans and livestock; a source of glycerol