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nouna plant body without true stems or roots or leaves or vascular system; characteristic of the thallophytestype of:
Definition that contains thallus
- horsetail lichen any of several lichens of the genus Alectoria having a thallus consisting of filaments resembling hair
- evernia lichens of the family Usneaceae having a pendulous or shrubby thallus
- thalloid of or relating to or resembling or consisting of a thallus
- sphaerocarpos type genus of Sphaerocarpaceae; liverworts with small many-lobed usually orbicular thallus
- usnea widely distributed lichens usually having a greyish or yellow pendulous freely branched thallus
- genus ulva type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce
- cladonia type genus of Cladoniaceae; lichens characterized by a crustose thallus and capitate fruiting bodies borne on simple or branched podetia
- 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
- genus alectoria lichens having dark brown erect or pendulous much-branched cylindrical thallus
- genus ramalina shrubby lichens of the family Usneaceae having a flattened thallus