- A solid mass of cellular tissue, consisting of one or more
layers, usually in the form of a flat stratum or expansion, but
sometimes erect or pendulous, and elongated and branching, and forming
the substance of the thallogens.
Thallus Thallus is a plant or microbial body lacking special tissue systems or organs; thalli may vary from a single cell to a complex, branching, multi
Definition
[ n.]