| Name | Mastopoma subrobustum Dixon |
| Authorship | Dixon |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Mastopoma |
| Citation | 1935 J. Linn. Soc., Bot. 50: 114 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Mastopoma subrobustum Dixon |
| Identification made in | [no date] (1) |