Phycomycetes

“Recognizing then these distinctions, we may make two divisions of the sub-kingdom: I.  The Alga-Fungi (_Phycomycetes_), and II.”

Elements of Structural and Systematic Botany For High Schools and Elementary College Courses

“While some of the lower forms show affinities with the _Phycomycetes_, and through them with the algæ, the greater number differ very strongly from all green plants both in their habits and in their structure and reproduction.”

Elements of Structural and Systematic Botany For High Schools and Elementary College Courses

“All of the characteristically aquatic groups of fungi belong to the most primitive or alga-like division — the Phycomycetes — and they are all probably to be regarded as primitively aquatic.”

Internet Archive: Transactions of the American Philosophical Society