FIGURE 12-30 The fungi that humans know best. There are more than 1.5 million fungal species, usually divided among seven phyla. Those most recognizable to humans are mushrooms of the Basidiomycota (basidiomycetes), yeasts of the Ascomycota (ascomycetes), and molds (a term that does not refer to a monophyletic group), which occur in multiple phyla.