AMONG THE WILD FLOWERS. 97 
dinary constituents of a hay-field. The Ceveads, 
or those species, British and Foreign, which 
are classed with corn, and produce grain used 
for food, are still fewer in number, there being 
only seven principal kinds, and of these only 
four are ordinarily grown by farmers. The 
four are Wheat, 7ritecum,; Barley, Hordeum ; 
Oat, Avena; Rye, Secale. The other three are 
Millet, Panzcum ; Rice, Oryza ; and Maize, Zea. 
In dimensions the species differ greatly, from 
the dwarf stem an inch long, 
tropical jungles in which the elephant is hidden, 
to the grass of 
and the tree-like Bamboo, Bamdbusa arun- 
dinacea, which attains a height of 50 feet or 
more. The Pampas Grass, Gynertum argen- 
teum, with its vegetable-silk spikes, reaches to 
feet. With only one exception the Graminez of 
our Flora have three stamens, and are therefore 
of Linn. Cl. II]., Zvzandria. The exception is 
the sweet-scented Vernal Grass, Axthoxanthum 
odoratum, which has 2 stamens; this species, as 
it dries, gives the pleasant odour to the hay. 
The Grasses are comprised in 12 Tribes, 
which again are included in two SuB-ORDERs : 
I., CLISANTHE, those with closed flowers; and 
II., EurvyANTHE#, in which the flowers are 
G 
