Chlorophyllum
Chlorophyllum is a genus of large agarics similar in appearance to the true parasol mushroom. "Chlorophyllum" was originally coined in 1898, a time when spore color was the deciding factor for differentiating genera. It was termed in order to describe the poisonous green-spored "C. molybdites" which shared many characteristics of the mushrooms within the genus "Lepiota" but lacked the all important white spores. The name derives from Greek "Chloro" meaning green and "phyllo" meaning leaf (or gill in this case). It remained as a monotypic genus until recently when modern DNA analyses concluded that many of the mushrooms  contained in the genus "Macrolepiota" actually had more in common genetically with the "Chlorophyllum molybdites" than with the other members of the "Macrolepiota". The genus has a widespread distribution, with many species found in tropical regions. The best known members are the edible shaggy parasol, a name applied to three very similar species "Chlorophyllum rhacodes", "C. olivieri" and "C. brunneum", and the poisonous "C. molybdites", which is widespread in subtropical regions around the world. List of species. , the nomenclatural database Index Fungorum lists 28 species in the genus.