| oryzopsis | (n) rice grass, Syn. genus Oryzopsis |
| mountain rice | (n) valuable forage grass of dry upland areas and plains of western North America to northern Mexico, Syn. Indian millet, silk grass, silkgrass, Oryzopsis hymenoides |
| smilo | (n) perennial mountain rice native to Mediterranean region and introduced into North America, Syn. Oryzopsis miliacea, smilo grass |
| Oryzopsis | prop. n. A genus of grasses incluiding rice grass. |