| Name | Leucopaxillus amarus f. bicolor (Murrill) R. Singer & A. H. Smith |
| Authorship | (Murrill) Singer & A. H. Smith |
| Rank | Forma |
| Placed in | Leucopaxillus amarus (Albertini & Schweinitz) Kühner |
| GUID | urn:lsid:indexfungorum.org:names:351759 |
| Citation | 1943 ["1942"] Pap. Michigan Acad. Sci. 28: 129 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Leucopaxillus amarus f. bicolor (Murrill) R. Singer & A. H. Smith |
| Identification made in | [no date] (1), 2012 (1) |