| Name | Galium scabriusculum subsp. protoscabriusculum Dempster & Ehrendorfer |
| Authorship | Dempster & Ehrendorfer |
| Rank | Subspecies |
| Placed in | Galium scabriusculum (Heinr. Braun ex Oborny) Dalla Torre & Sarnthein |
| Citation | 1965 Brittonia 17: 312 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Galium scabriusculum subsp. protoscabriusculum Dempster & Ehrendorfer |
| Identification made in | 1962 (1) |