310 POPULAR FIELD BOTANY. 
MELAMPYRUM PRATENSE. Common yellow Cow-wheat. A 
curious straggling plant, found commonly in groves and 
thickets, one foot or more high, slender, opposite branches, 
leaves in distant pairs, long and narrow. Flowers large, 
pale yellow, the corolla being four times as long as the 
calyx, the lower lip protruding out. The whole plant turns 
black when dry. It derives its name of Cow-wheat from 
the seeds resembling grains of wheat; but they are said to 
make the bread black when mixed with flour. There are 
other species, but they are rare. 
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DIpDYNAMIA. ANGIOSPERMIA. 
COROLLIFLOREZ. SCROPHULARIACEZ. 
ANTIRRHINUM. (Snap-pracovn.) 
Generic Character. Calya divided into five. Corolla with the 
lips closed, and looking like a face, the lower part enlarged, but 
not spurred. 
ANTIRRHINUM Masus. Great Snap-Dragon. Flowers very 
large, generally purplish red, but often whitish, making it a 
conspicuous object on old walls and in chalk-pits. It is 
from one to two feet high, with narrow leaves; the blossom 
