 Coprinellus <unk> was illustrated in a woodcut by the 16th @-@ century botanist Carolus Clusius in what is arguably the first published monograph on fungi , the 1601 Rariorum plantarum historia . Fungorum in <unk> <unk> brevis historia ( History of rare plants . Brief history of fungi observed in Pannonia [ Hungary ] ) . Clusius erroneously believed the species to be poisonous , and classified it as a genus of Fungi <unk> ( harmful fungi ) . The species was first described scientifically by French botanist Jean Baptiste François Pierre Bulliard in 1786 as Agaricus micaceus in his work Herbier de la France . In 1801 , Christian Hendrik Persoon grouped together all of the gilled fungi that auto @-@ digested ( <unk> ) during spore discharge into the section Coprinus of the genus Agaricus . Elias Magnus Fries later raised Persoon 's section Coprinus to genus rank in his Epicrisis Systematis Mycologici , and the species became known as Coprinus micaceus . It was the type species of subsection <unk> in section <unk> of the genus Coprinus , a grouping of related taxa with veils made of sphaerocysts ( round swollen cells usually formed in clusters ) exclusively or with thin @-@ filamentous connective hyphae intermixed . Molecular studies published in the 1990s demonstrated that many of the coprinoid ( Coprinus @-@ like ) mushrooms were in fact unrelated to each other . This culminated in a 2001 revision of the genus Coprinus , which was split into four genera ; C. <unk> was transferred to Coprinellus . 
