. . . _:b76309717 . "209990" . "Polyporus ptychogaster F.Ludw., 1880" . "Polyporus ptychogaster" . _:b76309717 . _:b76309717 "Index Fungorum id" . . "F.Ludw., 1880" . . . _:b76309717 "209990" . . "Polyporus ptychogaster" . "517254" . _:b76309717 .