Any of a large group of fungi and fungus-like organisms, including many parasitic and aquatic forms, which are simple in structure and typically reproduce asexually.
Origin
Early 19th century. After German niederer Pilz.
Definition of lower fungus in US English:
lower fungus
noun
Any of a large group of fungi and fungus-like organisms, including many parasitic and aquatic forms, which are simple in structure and typically reproduce asexually.