| Rubiaceae | |
Galium tinctorium var. diversifolium
| W. Wight | Zoë 5(3): 54 | 1900 |
| Rubiaceae | |
Galium tinctorium var. filifolium
| Wiegand | Bull. Torrey Bot. Club 24(8): 397 | 1897 |
| Rubiaceae | |
Galium tinctorium subsp. floridanum
| (Wiegand) Puff | Canad. J. Bot. 54(16): 1916 | 1976 |
| Rubiaceae | |
Galium tinctorium var. floridanum
| Wiegand | Bull. Torrey Bot. Club 24(8): 397 | 1897 |
| Rubiaceae | |
Galium tinctorium var. labradoricum
| Wiegand | Bull. Torrey Bot. Club 24(8): 398 | 1897 |
| Rubiaceae | |
Galium tinctorium var. subbiflorum
| (Wiegand) Fernald | Rhodora 39(464): 320 | 1937 |
| Rubiaceae | |
Galium tinctorium var. submontanum
| W. Wight | Zoë 5(3): 53 | 1900 |
| Rubiaceae | |
Galium tinctorium subsp. tinctorium
| | | |
| Rubiaceae | |
Galium tinctorium var. tinctorium
| | | |