网页2024年8月5日 · The mycelium makes up the thallus, or undifferentiated body, of a typical fungus. It may be microscopic in size or developed into visible structures, such as brackets, mushrooms, puffballs, rhizomorphs (long strands of hyphae cemented together), sclerotia (hard, compact masses), stinkhorns, toadstools, and truffles.