Herbarium_Specimen(s): UBC F27836 Original_Herbarium_Label: Mycena pterigena (Fr.) P. Kumm. Habitat: in an alluvial Red Alder (Alnus rubra_) stand with Vine Maple (_Acer circinatus) Host/Substrate: Growing on dead fronds of Athyrium filix-femina Collector(s): Oluna Ceska Identified_by: Oluna Ceska Comment(s): at the site of an unknown agaric: https://mushroomobserver.org/82309