Shaker : Vascilar Flora of Allegheny County. 37 



STAPHYLEACEiE De Candolle. 



BLADDER-NUT FAMILY. IV-66. 



STAPHYLEA Linn^us. 

 '■'■'- S. trifolia Linn?eus. American bladder-nut. 



ANACARDIACE^ Lindley. 

 SUMAC FAMILY. IV-62. 



RHUS Linnaeus. 



* R. hirta (Linnaeus). Staghorn sumac. 

 /?. typhina Linnaeus. 



'•= R. glabra Linnaeus. Smooth sumac. 

 ^- R. copallina Linnaeus. Dwarf sumac. 



* R. Vernix Linnaeus. Poison sumac. 

 R. venenata De Candolle. 



O'Hara Township, Swamp by W. P. R. R., near Allegheny City 

 Poor Farm, Nov., 1899. 



* R. radicans Linnaeus. Poison ivy. 



j R. aromatica Alton. Fragrant sumac. 



POLYGALACE^ Reichenbach. 

 MILKWORT FAMILY. IV-56. 

 POLYGALA Linnjeus. 

 t P. paucifolia Willdenow. Fringed milkwort. 



t P. polygama Walter. Racemed milkwort. 



i P. Senega Linnaeus. Seneca snakeroot. 



