Gills of Mycena leaiana have a darker edge
Mycena leaiana is brilliant orange when young but fades to white in age or after weathering. It grows on wood in clusters and is more robust than most of the other Mycenas. Mycena species produce white spore prints. Note the efficiency of the gill design and how the gills have primary, secondary, and tertiary rows to increase the surface area of the hymenium. The increase in surface area of the hymenium (spore producing hymenium) can be calculated and expresed as an increase over the surface area of the underside of the cap.