PLANTS THAT ARE CARRIED BY ANIMALS. 77 
smaller number on his legs and feet. Another student 
has seen dogs so annoyed by these burs on their feet that 
they gave up all attempts to walk. 
Many wild animals unwillingly carry about such fruits, 
and after a while most of them remove what they can 
with claws, hoof, or teeth. Many of these plants have no 
FlG ; 57. -AVhcie ripe fruit, f am q j ar common names, 
of the common carrot. " 
but who has not heard of 
some of these ? enchanter’s nightshade, bed- 
straw, wdd liquorice, hound s tongue, beggar- p itchf ork S , rndem, 
ticks, beggar’s lice, stick-tights, pitchforks, ^ o i i ^ l ts two barbed 
tick-trefoil, bush clover, motherwort, sand 
bur, burdock, cocklebur, sanicle, Avens, Agrimony, carrot, 
horse nettle, buffalo bur, Russian thistle. Besides these, a 
very large number of small seeds and fruits are rubbed 
off and carried away by animals. Some of these stick by 
means of the pappus, as, for instance, the dandelion, this- 
tle, prickly lettuce ; others by means of hairs on the seed, 
such as those of the willow-herb and milkweeds and 
willows ; or by hairs on the fruit, as virgin’s bower, 
