GRASS FAMILY. GRAMINEAE.

Fig 2. [Quack-Grass. Couch-Grass. Agropyron repens] (L.) Beauv.

Quack-Grass. Couch-Grass. Agropyron repens (L.) Beauv. Florets about 1 cm. long, 5-nerved at the short-awned apex: grain seldom produced and still less frequently found apart from the floral glume and palea, linear, about 4 mm. long, base abruptly acute, apex rounded, rounded on the back or outside, inside concave. Our worst weed. Introduced from Europe.


Fig 3. [Wild Oat. Avena fauta] L.

Wild Oat. Avena fauta L. Freed from chaff the floral glume is firm, rough, brown, thinly hairy, about 15 mm. long, awn from near the middle 2–4 cm. long with several firm twists, abruptly bent near the middle, the true grain seldom separated from the firmer floral glume. A bad weed in Oregon and California, seldom seen in Michigan.