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Saprobic; samples collected from leaf litter in both hardwood and softwood dominant forests, ecologically distinct from morphologically similar Mirasmius rotula which grows exclusively on wood. Cap 5-20 mm, cream to light tan, often slightly translucent, pleated with a central depression; stipe dark reddish-brown to black, turning yellow near cap; wiry. Gills similar in color to cap, are even, thick, attaching to a ring around the stem; tend to grow in patches and clusters. Global distribution (Rout et al. 2020). Mating patterns are consistent among different species of Marasmius, including Marasmius capillaris. This was demonstrated by crossing monokaryotic isolates of eleven different species of Marasmius (Gordon et al. 1994). ID number: 22.30.01.2021
White, Kathleen R.; Jergensen, Jacqueline A.; and Lam, Ada, "Marasmius capillaris" (2021). Mycological Herbarium of Macrofungi from the East Brook Valley. 57.