Gymnopus nidus-avis: basidiomata (César 36, holotype). Scale bar: 4 mm

 
 
  Part of: César E, Bandala VM, Montoya L, Ramos A (2018) A new Gymnopus species with rhizomorphs and its record as nesting material by birds (Tyrannidae) in the subtropical cloud forest from eastern Mexico. MycoKeys 42: 21-34. https://doi.org/10.3897/mycokeys.42.28894