Stratum example sentences

It is thallus-like and prostrate or erect, and attached to the substratum by unicellular or multicellular rhizoids.It is thallus-like and prostrate or erect and attached to the substratum by rhizoids.The plant body is usually attached to the substratum by a holdfast, and has a stalk, the stipe and leaf like photosynthetic organ – the frond.