Based on basidium type and fruiting body development:
These are fungi that produce motile cells (zoospores) with flagella at some stage in their life cycle. They typically possess a cell wall and exhibit absorptive nutrition. (Uniflagellate fungi) alexopoulos classification of fungi
Note: Later editions and variations of Alexopoulos’s work refined these into the standard Divisions: , Zygomycota , Ascomycota , and Basidiomycota , along with the "Deuteromycota" (Fungi Imperfecti). Based on basidium type and fruiting body development:
Alexopoulos’s system is valued for its clarity and logical organization. It treats fungi as a distinct kingdom and divides them primarily based on their (sexual and asexual spores) and thallus organization . alexopoulos classification of fungi