noun
thallus
Botanical term for a plant body not differentiated into stem, root, or leaf, as in algae, fungi, and some liverworts. Contrasts with 茎葉体 (cormus).
See also: 茎葉体
藻類や菌類の体は葉状体と呼ばれる。
The body of algae and fungi is called a thallus.
Compound of 葉状 (leaf-shaped) + 体 (body), a calque from Western botanical terminology.