TMIUS — SUMAC. 



ll'.J 



as n gnrpflo for soro throat. Nor lias its use been cnnfinod entirely to do- 

 inostic! practice, for nmny excellent practitioners, esiiecially those resident 

 hi tlie country \vher(; the fruit is readily accessible, employ it habituallv 

 as a coolinj,' drink and, either Jilone or as a basis, for <;ar<jfl('s. 



The leaves and bark owe Avhatcver of medicinal activity they possess to 

 the pi'esenco of tannit^ and gallic acids, and may be employed as simple 

 vegetable astrin<;ents wherever such remedies are indicated. 



Fia. 117.— Rhus Toxicodendron. A lloweiiiig brunch, out lialt naturnl size. 



§ 2. I\)isouoiiK S2)ecies. — Flowers polypfamous, in loose and slender ax- 

 illary panicles. Fruit olobular, glabrous, whitish or dun-colored ; stou'i 

 striate. Leaves unequally pinnate or trifoliate. 



Rhus Toxicodendron Limu'. — Poison Ivi/, FoiKon Oak. 



Descriptiun. — A low shrub or tall climber, according to the circum- 

 stances in which it is placed. Leaflets 3, rhombic-ovate, entire, or vari- 

 ously cut and lobed, smooth and shining above, downy beneath. Panicles 

 snnJl, tioNvers minute, fruit about the size of small peas, greenish. 



