| Helictotrichon asperum (Munro ex Thwaites) Bor | Helictotrichon virescens (Nees) Henrard | | | Helictotrichon asperum (Munro ex Thwaites) Bor | Helictotrichon virescens (Nees) Henrard | 18807 | 316444 |
| Helictotrichon hookeri (Scribn.) Henrard | Helictochloa hookeri (Scribn.) Romero Zarco subsp. hookeri | | | Helictotrichon hookeri (Scribn.) Henrard | Helictochloa hookeri (Scribn.) Romero Zarco subsp. hookeri | 18808 | 463632 |
| Helictotrichon planiculme (Schrad.) Pilg. | Helictochloa planiculmis (Schrad.) Romero Zarco | | | Helictotrichon planiculme (Schrad.) Pilg. | Helictochloa planiculmis (Schrad.) Romero Zarco | 18809 | 463636 |
| Helictotrichon pratense (L.) Besser | Helictochloa pratensis (L.) Romero Zarco | | | Helictotrichon pratense (L.) Besser | Helictochloa pratensis (L.) Romero Zarco | 18810 | 463637 |
| Helictotrichon pubescens (Huds.) Pilg. | Avenula pubescens (Huds.) Dumort. | | | Helictotrichon pubescens (Huds.) Pilg. | Avenula pubescens (Huds.) Dumort. | 18811 | 103467 |
| Helictotrichon sempervirens (Vill.) Pilg. | | a | | Helictotrichon sempervirens (Vill.) Pilg. | | 18812 | |
| Helictotrichon sulcatum (Boiss.) Henrard | Helictochloa marginata (Lowe) Romero Zarco | | | Helictotrichon sulcatum (Boiss.) Henrard | Helictochloa marginata (Lowe) Romero Zarco | 18813 | 463634 |
| Helictotrichon turgidulum (Stapf) Schweick. | Trisetopsis turgidula (Stapf) Röser & A. Wölk | | | Helictotrichon turgidulum (Stapf) Schweick. | Trisetopsis turgidula (Stapf) Röser & A. Wölk | 18814 | 467692 |
| Helictotrichon decorum (Janka) Henrard | | a | | Helictotrichon decorum (Janka) Henrard | | 103495 | |
| Helictotrichon desertorum (Less.) Nevski | | a | | Helictotrichon desertorum (Less.) Nevski | | 103496 | |
| Helictotrichon sedenense (Clarion ex DC.) Holub | | a | | Helictotrichon sedenense (Clarion ex DC.) Holub | | 103497 | |
| Helictotrichon spp. | | a | | Helictotrichon spp. | | 300261 | |
| Helictotrichon bromoides (Gouan) C. E. Hubb. | Helictochloa bromoides (Gouan) Romero Zarco | | | Helictotrichon bromoides (Gouan) C. E. Hubb. | Helictochloa bromoides (Gouan) Romero Zarco | 316440 | 463629 |
| Helictotrichon compressum (Heuff.) Henrard | Helictochloa compressa (Heuff.) Romero Zarco | | | Helictotrichon compressum (Heuff.) Henrard | Helictochloa compressa (Heuff.) Romero Zarco | 316441 | 463630 |
| Helictotrichon versicolor (Vill.) Pilg. | Helictochloa versicolor (Vill.) Romero Zarco subsp. versicolor | | | Helictotrichon versicolor (Vill.) Pilg. | Helictochloa versicolor (Vill.) Romero Zarco subsp. versicolor | 316442 | 463639 |
| Helictotrichon schellianum (Hack.) Kitag. | Helictochloa hookeri (Scribn.) Romero Zarco subsp. schelliana (Hack.) Romero Zarco | | | Helictotrichon schellianum (Hack.) Kitag. | Helictochloa hookeri (Scribn.) Romero Zarco subsp. schelliana (Hack.) Romero Zarco | 316443 | 463633 |
| Helictotrichon virescens (Nees) Henrard | | a | | Helictotrichon virescens (Nees) Henrard | | 316444 | |
| Helictotrichon tibeticum (Roshev.) Holub | | a | | Helictotrichon tibeticum (Roshev.) Holub | | 319096 | |
| Helictotrichon mongolicum (Roshev.) Henrard | | a | | Helictotrichon mongolicum (Roshev.) Henrard | | 401963 | |
| Helictotrichon montanum (Vill.) Henrard | Helictotrichon sedenense (Clarion ex DC.) Holub | | | Helictotrichon montanum (Vill.) Henrard | Helictotrichon sedenense (Clarion ex DC.) Holub | 410701 | 103497 |
| Helictotrichon altius (Hitchc.) Ohwi | | a | | Helictotrichon altius (Hitchc.) Ohwi | | 418760 | |
| Helictotrichon tianschanicum (Roshev.) Henrard | | a | | Helictotrichon tianschanicum (Roshev.) Henrard | | 452412 | |
| Helictotrichon canescens (Buckley) Clayton | Trisetum cernuum Trin. subsp. canescens (Buckley) Calder & Roy L. Taylor | | | Helictotrichon canescens (Buckley) Clayton | Trisetum cernuum Trin. subsp. canescens (Buckley) Calder & Roy L. Taylor | 453511 | 451650 |
| Helictotrichon hookeri (Scribn.) Henrard subsp. schellianum (Hack.) Tzvelev | Helictochloa hookeri (Scribn.) Romero Zarco subsp. schelliana (Hack.) Romero Zarco | | i | Helictotrichon hookeri (Scribn.) Henrard subsp. schellianum (Hack.) Tzvelev | Helictochloa hookeri (Scribn.) Romero Zarco subsp. schelliana (Hack.) Romero Zarco | 463557 | 463633 |
| Helictotrichon versicolor (Vill.) M. Laínz unranked caucasica Holub | Helictochloa versicolor (Vill.) Romero Zarco subsp. caucasica (Holub) Romero Zarco | | i | Helictotrichon versicolor (Vill.) M. Laínz unranked caucasica Holub | Helictochloa versicolor (Vill.) Romero Zarco subsp. caucasica (Holub) Romero Zarco | 463562 | 463640 |
| Helictotrichon adzharicum (Albov) Grossh. | Helictochloa versicolor (Vill.) Romero Zarco subsp. caucasica (Holub) Romero Zarco | | | Helictotrichon adzharicum (Albov) Grossh. | Helictochloa versicolor (Vill.) Romero Zarco subsp. caucasica (Holub) Romero Zarco | 463564 | 463640 |
| Helictotrichon imberbe (Nees) Veldkamp | Trisetopsis imberbis (Nees) Röser et al. | | | Helictotrichon imberbe (Nees) Veldkamp | Trisetopsis imberbis (Nees) Röser et al. | 485569 | 485568 |