| Piptatherum virescens (Trin.) Boiss. | | a | | Piptatherum virescens (Trin.) Boiss. | | 28613 | |
| Piptatherum laterale (Munro ex Regel) Roshev. | | a | | Piptatherum laterale (Munro ex Regel) Roshev. | | 105041 | |
| Piptatherum gracile Mez | | a | | Piptatherum gracile Mez | | 315545 | |
| Piptatherum coerulescens (Desf.) P. Beauv. | | a | | Piptatherum coerulescens (Desf.) P. Beauv. | | 316128 | |
| Piptatherum miliaceum (L.) Coss. | Oloptum miliaceum (L.) Röser & Hamasha | | | Piptatherum miliaceum (L.) Coss. | Oloptum miliaceum (L.) Röser & Hamasha | 317150 | 477743 |
| Piptatherum holciforme (M. Bieb.) Roem. & Schult. | | a | | Piptatherum holciforme (M. Bieb.) Roem. & Schult. | | 317151 | |
| Piptatherum paradoxum (L.) P. Beauv. | | a | | Piptatherum paradoxum (L.) P. Beauv. | | 317152 | |
| Piptatherum acuminatum J. Presl | Eriochloa acuminata (J. Presl) Kunth var. acuminata | | | Piptatherum acuminatum J. Presl | Eriochloa acuminata (J. Presl) Kunth var.acuminata | 318454 | 318451 |
| Piptatherum songaricum (Trin. & Rupr.) Roshev. ex Nikitina | | a | | Piptatherum songaricum (Trin. & Rupr.) Roshev. ex Nikitina | | 319089 | |
| Piptatherum micranthum (Trin. & Rupr.) Barkworth | Piptatheropsis micrantha (Trin. & Rupr.) Romasch. et al. | | | Piptatherum micranthum (Trin. & Rupr.) Barkworth | Piptatheropsis micrantha (Trin. & Rupr.) Romasch. et al. | 402291 | 480092 |
| Piptatherum aequiglume (Duthie ex Hook. f.) Roshev. | | a | | Piptatherum aequiglume (Duthie ex Hook. f.) Roshev. | | 408634 | |
| Piptatherum microcarpum (Pilg.) Tzvelev | | a | | Piptatherum microcarpum (Pilg.) Tzvelev | | 408636 | |
| Piptatherum molinioides Boiss. | | a | | Piptatherum molinioides Boiss. | | 408638 | |
| Piptatherum munroi (Stapf) Mez | | a | | Piptatherum munroi (Stapf) Mez | | 408639 | |
| Piptatherum purpurascens (Hack. ex Paulsen) Roshev. | | a | | Piptatherum purpurascens (Hack. ex Paulsen) Roshev. | | 408640 | |
| Piptatherum racemosum (Sm.) Eaton | Patis racemosa (Sm.) Romasch. et al. | | | Piptatherum racemosum (Sm.) Eaton | Patis racemosa (Sm.) Romasch. et al. | 413371 | 477773 |
| Piptatherum spp. | | a | | Piptatherum spp. | | 435190 | |
| Piptatherum exigua (Thurb.) Dorn | Piptatheropsis exigua (Thurb.) Romasch. et al. | | | Piptatherum exigua (Thurb.) Dorn | Piptatheropsis exigua (Thurb.) Romasch. et al. | 477757 | 477759 |
| Piptatherum canadensis (Poir.) Dorn | Piptatheropsis canadensis (Poir.) Romasch. et al. | | | Piptatherum canadensis (Poir.) Dorn | Piptatheropsis canadensis (Poir.) Romasch. et al. | 477762 | 477760 |
| Piptatherum pungens (Torr.) Dorn | Piptatheropsis pungens (Torr.) Romasch. et al. | | | Piptatherum pungens (Torr.) Dorn | Piptatheropsis pungens (Torr.) Romasch. et al. | 477772 | 477771 |
| Piptatherum nigrum Torr. | Patis racemosa (Sm.) Romasch. et al. | | | Piptatherum nigrum Torr. | Patis racemosa (Sm.) Romasch. et al. | 477777 | 477773 |