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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
- sphaerocarpus type genus of Sphaerocarpaceae; liverworts with small many-lobed usually orbicular thallus
- genus usnea widely distributed lichens usually having a greyish or yellow pendulous freely branched thallus
- crustose (of lichens) having a thin crusty thallus that adheres closely to the surface on which it is growing
- podetium an organ or body resembling a stalk; especially the outgrowth of the thallus of certain lichens on which the ascocarp is borne
- usnea widely distributed lichens usually having a greyish or yellow pendulous freely branched 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 sphaerocarpos type genus of Sphaerocarpaceae; liverworts with small many-lobed usually orbicular thallus
- genus cladonia type genus of Cladoniaceae; lichens characterized by a crustose thallus and capitate fruiting bodies borne on simple or branched podetia
- alectoria lichens having dark brown erect or pendulous much-branched cylindrical thallus
- ulva type genus of the family Ulvaceae; green seaweed having a thallus two cells thick: sea lettuce