| Name | Galium obtusum subsp. filifolium (Wiegand) Puff |
| Authorship | (Wiegand) Puff |
| Rank | Subspecies |
| Placed in | Galium obtusum Bigelow |
| Citation | 1977 Bull. Torrey Bot. Club 104(3): 207 |
| Holdings | 42 Specimens held in the Harvard University Herbaria identified as Galium obtusum subsp. filifolium (Wiegand) Puff |
| Identification made in | [no date] (42) |
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