European perennial grass widely cultivated for pasture and hay and as a lawn grass.
1Rumex, Poterium sanguisorba, Potentilla anserina, Medicago sativa, Taraxacum officinale, Marrubium vulgare, Plantago lanceolata, P. major, Lolium perenne.
2Lolium perenne.- Ayoungstem, 7 inches in height, consisting of 3 internodes, with the flower-headnot yet protruded, was selected for observation.