Pratella cretacea var. flavescens (Richon & Roze) Quél. Dataset Rank VARIETY Classification kingdom Fungi phylum Basidiomycota class Agaricomycetes order Agaricales family Agaricaceae genus Agaricus species Agaricus xanthodermus Name Homonyms Pratella cretacea var. flavescens (Richon & Roze) Quél.