Colorado PlaJ^ts Injurious to Livlstock 
49 
purple ‘or , dark red. The small yellowish-green flowers occur in 
clusters in the axils of the leaves. The fruit is globular, berrylike, 
shining-white,- and often persistent on the plant during the winter. 
It usually grows in rather moist, shaded situations or among rocks. 
Poison oak or poison ivy should not be confused with scrub oak. 
Some people are very susceptible to ivy poisoning. In the 
human it causes intense inflammatin of the skin, with vesicles, 
edema, itching, and spreads rapidly. A few reports have come to 
this office to the effect that animals have been poisoned from eating 
poison ivy, but these reports have not been verified. From a veter¬ 
inary standpoint, it has little significance as a poisonous plant. 
For poisoning by ivy, a popular and effective remedy consists 
in washing the inflamed skin with a solution made by adding pow¬ 
dered sugar of lead to alcohol, of 50% grade, until no more will 
easily dissolve. 
SKUNK-BUSH (Rhus frilobafa) 
’ This is a much-branched shrub (fig. 65), 2 to 5 feet high. The 
leaves are usually 3-lobed. The flowers are in dense clusters, small, 
