STOCK-POISONING PLANTS OF THE RANGE. 
29 
latter symptom is so prominent as to have given the disease its 
popular name. Diarrhea is common, and bloating is a prominent 
symptom in the animals poisoned on the range. The poison is cumula- 
tive, and its effects continue for a long time. 
Figure 27, shows a 
sheep poisoned by Hele- 
nium hoopesii at a time 
when nausea is very 
apparent, and Figure 
28 shows a steer in the 
act of vomiting as the 
result of feeding on 
this plant. 
Treatment for Sneeze- 
weed Poisoning. 
No medical remedy 
for sneezeweed poison- 
ing has been found. It 
is the custom of sheep 1 
the Wasatch 
Fig. 27. — A sheep poisoned by western sneezeweed (Hel- 
enium hoopesii). Its attitude shows that it is nause- 
ated. 
men on 
Mountains, when their 
sheep are found to be 
"spewin g," to take 
them to lower altitudes on " browse range," when their condition is 
improved. It is recognized, however, that this treatment does not 
bring about a real cure. It is important that herders should recog- 
nize the plant and so far as possible avoid ranges or parts of ranges 
where it is especially abundant. Generally speaking, when sheep are 
found to be suffering 
from this plant it is be- 
cause they have been 
eating it for some time, 
and perhaps a single 
large feeding may have 
precipitated the trou- 
ble, which is mainly 
due to the accumulated 
effect of prolonged 
feeding. 
BACCHARIS PTERONIOIDES. 
B accharis ptero- 
ni o id e s , shown in 
Plates XXXVIII and 
XXXIX, is a spread- 
ing shrub from 1 to 2 
feet in height, found in 
western Texas, the southern portions of New Mexico and Arizona, 
and in Mexico. The tips of the young branches are sticky. The leaves 
are small, from one-eighth to three-quarters inch long, and grow in 
dense clusters. The flowers are in bell-shaped heads terminating the 
branchlets. The staminate and pistillate flowers are on different 
plants. The white pappus of the pistillate flowers makes the plants, 
when in blossom, quite conspicuous. The plants may live at altitudes 
Fig. 28. — A steer which 
and is suffering 
lias eaten western sneezeweed 
from severe vomiting. 
