| Glyceria canbyi Scribn. | Poa secunda J. Presl | | | Glyceria canbyi Scribn. | Poa secunda J. Presl | 17673 | 29004 |
| Glyceria distans (Jacq.) Wahlenb. | Puccinellia distans (Jacq.) Parl. subsp. distans | | | Glyceria distans (Jacq.) Wahlenb. | Puccinellia distans (Jacq.) Parl. subsp. distans | 17674 | 418910 |
| Glyceria elata (Nash) Hitchc. | | a | | Glyceria elata (Nash) Hitchc. | | 17675 | |
| Glyceria fluitans (L.) R. Br. | | a | | Glyceria fluitans (L.) R. Br. | | 17676 | |
| Glyceria grandis S. Watson | | a | | Glyceria grandis S. Watson | | 17677 | |
| Glyceria lithuanica (Gorski) Gorski | | a | | Glyceria lithuanica (Gorski) Gorski | | 17678 | |
| Glyceria magellanica (Hook. f.) Benth. | Puccinellia magellanica (Hook. f.) Parodi | | | Glyceria magellanica (Hook. f.) Benth. | Puccinellia magellanica (Hook. f.) Parodi | 17679 | 310526 |
| Glyceria maxima (Hartm.) Holmb. | | a | | Glyceria maxima (Hartm.) Holmb. | | 17680 | |
| Glyceria multiflora Steud. | | a | | Glyceria multiflora Steud. | | 17681 | |
| Glyceria plicata (Fr.) Fr. | Glyceria notata Chevall. | | | Glyceria plicata (Fr.) Fr. | Glyceria notata Chevall. | 17682 | 408433 |
| Glyceria remota (Forselles) Fr. | Glyceria lithuanica (Gorski) Gorski | | | Glyceria remota (Forselles) Fr. | Glyceria lithuanica (Gorski) Gorski | 17683 | 17678 |
| Glyceria remota (Forselles) Fr. var. japonica Hack. | Glyceria alnasteretum Kom. | | i | Glyceria remota (Forselles) Fr. var.japonica Hack. | Glyceria alnasteretum Kom. | 17684 | 408435 |
| Glyceria tonglensis C. B. Clarke | | a | | Glyceria tonglensis C. B. Clarke | | 17686 | |
| Glyceria striata (Lam.) Hitchc. | | a | | Glyceria striata (Lam.) Hitchc. | | 70324 | |
| Glyceria spp. | | a | | Glyceria spp. | | 300229 | |
| Glyceria songorica Schrenk ex Fisch. & C. A. Mey. | Eremopoa altaica (Trin.) Roshev. subsp. songorica (Schrenk ex Fisch. & C. A. Mey.) Tzvelev | | | Glyceria songorica Schrenk ex Fisch. & C. A. Mey. | Eremopoa altaica (Trin.) Roshev. subsp. songorica (Schrenk ex Fisch. & C. A. Mey.) Tzvelev | 407865 | 407864 |
| Glyceria obtusa (Muhl.) Trin. | | a | | Glyceria obtusa (Muhl.) Trin. | | 408430 | |
| Glyceria notata Chevall. | | a | | Glyceria notata Chevall. | | 408433 | |
| Glyceria fluitans (L.) R. Br. var. plicata Fr. | Glyceria notata Chevall. | | i | Glyceria fluitans (L.) R. Br. var.plicata Fr. | Glyceria notata Chevall. | 408434 | 408433 |
| Glyceria alnasteretum Kom. | | a | | Glyceria alnasteretum Kom. | | 408435 | |
| Glyceria ischyroneura Steud. | | a | | Glyceria ischyroneura Steud. | | 409541 | |
| Glyceria arctica Hook. | Puccinellia arctica (Hook.) Fernald & Weath. | | | Glyceria arctica Hook. | Puccinellia arctica (Hook.) Fernald & Weath. | 412721 | 412720 |
| Glyceria pallida (Torr.) Trin. | Torreyochloa pallida (Torr.) G. L. Church var. pallida | | | Glyceria pallida (Torr.) Trin. | Torreyochloa pallida (Torr.) G. L. Church var.pallida | 412809 | 412780 |
| Glyceria pallida (Torr.) Trin. var. fernaldii Hitchc. | Torreyochloa pallida (Torr.) G. L. Church var. fernaldii (Hitchc.) Dore | | i | Glyceria pallida (Torr.) Trin. var.fernaldii Hitchc. | Torreyochloa pallida (Torr.) G. L. Church var.fernaldii (Hitchc.) Dore | 412812 | 412808 |
| Glyceria fernaldii (Hitchc.) H. St. John | Torreyochloa pallida (Torr.) G. L. Church var. fernaldii (Hitchc.) Dore | | | Glyceria fernaldii (Hitchc.) H. St. John | Torreyochloa pallida (Torr.) G. L. Church var.fernaldii (Hitchc.) Dore | 412813 | 412808 |
| Glyceria pauciflora J. Presl | Torreyochloa pallida (Torr.) G. L. Church var. pauciflora (J. Presl) J. I. Davis | | | Glyceria pauciflora J. Presl | Torreyochloa pallida (Torr.) G. L. Church var.pauciflora (J. Presl) J. I. Davis | 412816 | 412807 |
| Glyceria langeana Berlin | Puccinellia tenella (Lange) Holmb. subsp. langeana (Berlin) Tzvelev | | | Glyceria langeana Berlin | Puccinellia tenella (Lange) Holmb. subsp. langeana (Berlin) Tzvelev | 412836 | 412832 |
| Glyceria tenella Lange | Puccinellia tenella (Lange) Holmb. subsp. tenella | | | Glyceria tenella Lange | Puccinellia tenella (Lange) Holmb. subsp. tenella | 412837 | 412830 |
| Glyceria canadensis (Michx.) Trin. | | a | | Glyceria canadensis (Michx.) Trin. | | 413364 | |
| Glyceria laxa (Scribn.) Scribn. | | a | | Glyceria laxa (Scribn.) Scribn. | | 413366 | |
| Glyceria pulchella (Nash) K. Schum. | | a | | Glyceria pulchella (Nash) K. Schum. | | 413368 | |
| Glyceria nemoralis (Uechtr.) Uechtr. & Körn. | | a | | Glyceria nemoralis (Uechtr.) Uechtr. & Körn. | | 414934 | |
| Glyceria aquatica (L.) Wahlb. | Glyceria maxima (Hartm.) Holmb. | | | Glyceria aquatica (L.) Wahlb. | Glyceria maxima (Hartm.) Holmb. | 417733 | 17680 |
| Glyceria occidentalis (Piper) J. C. Nelson | | a | | Glyceria occidentalis (Piper) J. C. Nelson | | 418731 | |
| Glyceria spectabilis Mert. & W. D. J. Koch | Glyceria maxima (Hartm.) Holmb. | | | Glyceria spectabilis Mert. & W. D. J. Koch | Glyceria maxima (Hartm.) Holmb. | 454679 | 17680 |
| Glyceria stricta Hook. f. | Puccinellia stricta (Hook. f.) Blom | | | Glyceria stricta Hook. f. | Puccinellia stricta (Hook. f.) Blom | 461770 | 30347 |
| Glyceria septentrionalis Hitchc. | | a | | Glyceria septentrionalis Hitchc. | | 461783 | |
| Glyceria declinata Breb. | | a | | Glyceria declinata Breb. | | 465018 | |
| Glyceria grandis S. Watson var. komarovii Kelso | | a | i | Glyceria grandis S. Watson var.komarovii Kelso | | 465513 | |
| Glyceria grandis S. Watson var. grandis | | a | i | Glyceria grandis S. Watson var.grandis | | 465514 | |