Correct name for namcko

The Japanese common edible mushroom called nameko at present is a species belonging to Pholiota. This species has been identified as P. nameko (T. Ito) S. Ito & Imai (= Collybia nameko T. Ito, 1929). The type specimens of C. nameko are not traced in herbaria. The plate of the original description is designated as the lectotype of C. nameko T. Ito. The Himalayan species P. microspora (Berk.) Sacc. (= Agaricus microsporus Berk., 1850) is identical with nameko. The author concludes P. nameko is a synonym of P. microspora.