| Name | Galium serpenticum subsp. scabridum (Ehrendorfer) Dempster & Ehrendorfer |
| Authorship | (Ehrendorfer) Dempster & Ehrendorfer |
| Rank | Subspecies |
| Placed in | Galium serpenticum Dempster |
| Citation | 1965 Brittonia 17(4): 330 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Galium serpenticum subsp. scabridum (Ehrendorfer) Dempster & Ehrendorfer |
| Identification made in | [no date] (1) |
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