136 CLASSIFICATION OF [CH. 
caryopsis, which easily falls out and is ovoid-acute, about 
2mm. long by | broad, and finely punctate. 
The much rarer P. arenarium and the very rare P. Behmeri and 
P. asperum also come here. 
Phleum is not easily confounded with any other of our grasses, 
and Briza and Glyceria are almost the only other common grasses of 
about the same size of which the caryopsis often falls free from the 
palea (“naked fruits”). Glyceria is longer and corn-shaped, and 
Briza usually larger. Anthoranthum and Phalaris are easily dis- 
tinguished. Agrostis is smaller and “corn-shaped.” Certain species 
of Panicum present resemblances, but the enveloping palez, &c. are 
very different. JMelica also occurs as “naked fruits,” but is rarely 
seen, and its colour and brilliant lustre distinguish it. 
B. Glumes not cuspidate. “Fruit” not yellow. 
(a) “Fruit” white, owing to the closely investing 
palea. 
Milium effusum. 
A common grass, but not often met with in “seed” grasses. It 
is eagerly eaten by birds. 
Milium effusum, L. (Fig. 52). 
Palea about 3 mm. long, with 
few nerves, closely investing the 
caryopsis: the seed is_ ellipsoid- 
acute, slightly compressed, and 2°2— 
27 mm. long. The inner pale be- 
comes hard and shines like porcelain. 
4 99 : ig. 52. Mili - 
(b) “Fruit” dark-brown shin- Bee oo eae 
; Xu sum. ‘© Seed,” a, 
ing; slightly flattened and nat. size; b and e, 
grooved. x 7. Nobbe. 
Melica. 
