Studies of two Corner types (Marasmius nigroimplicatus and M-subrigidichorda) and new Gymnopus combinations

Type specimens of Marasmius nigroimplicatus and M. subrigidichorda were studied. Based on morphological studies, both species belong to Gymnopus, sect. Androsacei. Color photographs of dried basidiomata and microscopic characters accompany the detailed descriptions. New combinations are proposed for these two taxa. Nine related marasmioid species are transferred to Gymnopus.