Vegetative structure not clearly divided into stem and leaf (as in Lemna).
Having a simple plant or fungus body without differentiation into leaves or leaf-like structures.
A plant body not separated into a distinct stem and leaves, as in Duckweeds (Lemnaceae), and in many lower plants such as Algae, some Liverworts and Lichens, etc.
A type of plant body that is undifferentiated into root, stem, or leaf.
A plant body that is not differentiated into roots, stems and leaves, and characteristic of lower plants (algae, fungi and lichens).