Name requested: Agaricus pudensMycotaxon 15: 63.
Homotypic synonym: Xerula pudensMycotaxon 15: 63. 71: 108. 81: 157, 158. 82: 199, 202. 93: 320. 101: 114, 124, 125.
Heterotypic synonym: Collybia longipesAnnales Mycologici 34 (4-5): 308. Mycologia 7 (3): 132. 22 (2): 83. 38 (3): 260. 70 (5): 1047. Mycotaxon 9 (1): 122. 15: 63. 30: 390, 392. 57: 58. 60: 219. 81: 157. Persoonia 13 (1): 50. Sydowia 8 (1-6): 49.
Heterotypic synonym: Xerula longipesMycology and Phytopathology 2 (2): 110. Mycotaxon 15: 62, 63. 30: 402. 75: 337, 340. 81: 157. 83: 123. Persoonia 2 (1): 42. 13 (1): 45, 47, 48. Sydowia 15 (1-6): 173.
Heterotypic synonym: Oudemansiella longipesMycologia 59 (5): 916. 64 (4): 828. Mycotaxon 15: 63. 17: 428, 431. 30: 390. 81: 157, 158. 82: 199. 83: 123. 101: 135. Persoonia 2 (1): 42. Sydowia 32: 75. Transactions of the Mycological Society of Japan 23 (4): 502.