els 
PHALARIDEA 195 
canary-grass, an annual with ovate heads, is an occasional 
weed introduced from Europe. This is grown in Europe 
for the seed which furnishes the canary seed of commerce. 
Canary seed usually contains also the seed of Panicum 
miliaceum. The seed of Phalaris canariensis (Fig. 34) is pale yel- 
low, 5 mm. long, elliptical-lanceolate, laterally somewhat flattened 
but equally convex on both sides, hard and shining and more or less 
pubescent. The fruit of Panicum miliaceum is pale, brownish or 
reddish, about as long as canary-grass seed but much more plump, 
dorsally flattened on one side, the palea being inclosed or overlapped 
by the lemma, the whole smooth, hard, shining, and faintly nerved. 
The seed, when removed from the inclosing lemma and palea is 
nearly white, somewhat globular with a notch in one side, pearly 
in appearance. The fruit of common or foxtail millet (Chztochloa 
italica) differs from that of Panicum miliaceum in being some- 
what smaller and faintly cross-wrinkled, and in the appearance of 
the palea, which presents 2 ridges near the margin representing 
the 2 keels. (See Figs. 21 and 25.) 
