| Name | Cystangium megasporum (Rodway) T. Lebel & M. A. Castellano |
| Authorship | (Rodway) T. Lebel & M. A. Castellano |
| Rank | Species |
| Placed in | Cystangium Singer & A. H. Smith |
| Citation | 2002 Mycologia 94: 335 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Cystangium megasporum (Rodway) T. Lebel & M. A. Castellano |
| Identification made in | [no date] (4) |