Name requested: Gymnoascus umbrinus var. thaxteriMycologia 63 (2): 200. Mycological Papers 96: 14.
Homotypic synonym: Myxotrichum thaxteriMycologia 47 (6): 878, 880, 881, 882, 885, 886, 888, 889. 48 (6): 805. 51 (5): 678, 683. 52 (5): 766. 63 (2): 199, 200, 201. Mycological Papers 96: 14. Mycotaxon 24: 118, 153, 154. Sydowia 23 (1-6): 133.
Homotypic synonym: Auxarthron thaxteriMycologia 63 (2): 200, 201. 64 (1): 64, 66. Mycotaxon 5 (1): 287, 288. 24: 153.