Position in a system
| system | Vitae - living organisms |
| domain | Eukaryota Whittaker & Margulis, 1978 - lifeforms with nucletic cells |
| superregnum | Bikonta - bikonts |
| Corticata | |
| Archaeplastida | |
| kingdom | Plantae Haeckel - plants |
| divisio | Magnoliophyta Cronquist, Takht. & W.Zimm. - flowering plants |
| class | Liliopsida Batsch - monocotyledons |
| order | Poales Small |
| family | Poaceae Barnhart |
| subfamily | Pooideae Bentham |
| genus | Trisetum Pers. - oatgrass |
| species | Trisetum mexicanum (Swallen) S.D.Koch |