| Name | Cratoneuron commutatum var. sulcatum Nyholm |
| Authorship | Nyholm |
| Rank | Variety |
| Placed in | Cratoneuron commutatum (Hedwig) G. Roth |
| Citation | 1965 Ill. Moss Fl. Fennoscandia 420 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Cratoneuron commutatum var. sulcatum Nyholm |
| Identification made in | [no date] (1) |