T. repens: stems stiff, ascending or erect, 1-3 feet high, sometimes glaucous; spikelets placed on alternate sides of a spike, 2-6 inches long; glumes 5-7 ribbed, acute, or terminating in an awn. - Couch-grass. - Fields and waste places. Fl. July.

T. junceum, a plant with glaucous herbage and very blunt glumes to the spikelets, is common on sandy sea-shores.

T. caninum also closely resembles T. repens, but the stems are tufted, more leafy, and less glaucous; the glumes rather thinner, with five prominent ribs, and terminating in a rather long awn. - Woods and banks. Fl. July.

(326) Lolium. Rye-grass. L. perenne: stems erect or slightly decumbent, 1-1 1/2 foot high, leafy below; spike 1/2-1 foot long, distichous, the spike-lets at a considerable distance from each other, longer than the glumes. - Meadows, pastures, and waste places. Fl. June. L. temulentum: annual; stems erect, three feet high; spike long, the outer glume of the spikelets usually as long as the spikelet itself; pales sometimes with an awn longer than themselves. - Darnel. - Fields and waste places. Fl. July.