A study of multiple Mycena mushroom species, also known as “bonnets,” reported in the journal Cell Genomics on June 27 has found that they have unexpectedly large genomes. A study of multiple Mycena mushroom species, also known as “bonnets,” reported in the journal Cell Genomics on June 27 has found that they have unexpectedly large genomes. Ecology Molecular & Computational biology Phys.org – latest science and technology news stories