186 EXPERIMENTAL FARMS. 
63 VICTORIA, A. 1900 
teristics of the other mustards and besides is a large free-growing, exceptionally prolific 
plant, of which when the seeds are ripe the head breaks off and becomes a ‘tumbling 
weed’ (Fig. 16), which may be blown for miles across the prairies in the autumn and 
during the winter, thus scattering the seeds quickly over wide areas. The reddish or 
greenish-brown seeds are very small, and a single plant produced one million and a half 
by actual count. Owing to the small size of the seeds, they are easily cleaned from 
grain. The distribution of the plant is almost entirely by the wind blowing the heads 
across the prairies during the winter. 
Remedy.—The best means of clear- 
= ing land of this and other kinds of 
mustard mentioned below consists of 
Ny 
b4 
the growing crops of grain as long as 
possible in spring, and subsequently 
hand-pulling the flowering plants and 
mowing them down at the edges of 
fields, on road allowances, railway 
banks and waste places. 
Hare’s-EAR Mustarp_ |Conringia 
orientalis, (Li.) Andrz.].—Annual. In- 
troduced. This is an extremely in- 
jurious plant with large leaves, grayish- 
green, like those of a young cabbage 
or field pea, but shaped like the ear 
of a hare or rabbit ; flowers small and 
creamy white, followed by long square 
pods from 3 to 4 inches long, a vigor- 
ous grower and an absorber of much 
moisture. The ripe stems, sometimes 4 
feet high, are wiry and stiff, and give 
much trouble when grain is harvested, 
not only in cutting, but also in binding 
and handling. The seeds of this plant 
are much larger than those of the 
Tumbling Mustard and are frequently 
found in seed grain, with which they 
are distributed. The Hare’s-ear Mus- 
tard now occurs widely through Mani- 
toba and the North-west Territories. 
Mr. Willing places it third in his list 
of the worst weeds. 
Fause Friax (Camelina sativa, 
Krantz).—Annual and winter annual. 
Introduced. A slender-branched plant 
of the Mustard Family which matures 
early, the numerous pear-shaped pods 
+ containing several seeds. This is 
Fig. 17.—Hare’s-ear Mustard. widely spread in the West. The chief 
causes of its increase in the past has 
been the late date at which summer- 
fallowing has been done, 
harrowing orcultivating with aweeder . 
te et iv 
