202 ANACARDIACEAB 



Family 2. LIMNANTHAOEAE Lindl. False Mermaid Family. 

 1. FLOERKEA Willd. 

 1. Floerkea proserpinacoides Willd. Fai,se Mermaid. (Man. p. 

 599 ; I. F. y; 2346.) In marshes and along rivers, Quebec to Ont., Ore., 

 Pa., Tenn., Mo., Utah and Calif. — Pennsylvania: Northampton; Bucks; 

 DELAWARE ; Lancaster ; Franklin ; Washington ; Allegheny. 



Family 3. ANACAKDIACEAE Lindl. Sumac Family. 



Leaves compound : ovary and drupe not oblique. i. Rhus. 



Leaves simple : ovary and drupe very oblique. 2. Cotinus. 



1. RHUS L. 



Drupe with a pubescent outer coat : stone smooth. 

 Leaves with 9-13 leaflets : flowers appearing- after the leaves. 

 Leaf-rachis winged. 1. R. copallina. 



Leaf-rachis terete or nearly so. 

 Twigs and leaves copiously pubescent : leaflets not glaucous beneath. 



2. R. hiria. 

 Twigs and leaves glabrous : leaflets glaucous beneath. 3. R. glabra. 

 Leaves with 3 leaflets : flowers appearing before the leaves. 4. R. aromatica. 

 Drupe with a glabrous outer coat : stone ribbed. 

 Leaflets 7-13 : shrub or tree. 5. R. Vernix. 



Leaflets 3 : vine. 6. R. radicans. 



1. Rhus copalUna L. Dwarf or Mountain Sumac. (Man. p. 60a ; 

 L F. / 2347.) In dry soil. Me. and Out. to Fla., Mitiu. and Tex.— 

 Pennsylvania : Pike ; Lackawanna ; Monroe ; Northampton ; 

 Bucks ; Delaware ; Chester ; Lancaster ; Franklin ; Cumber- 

 land ; Dauphin ; Huntingdon ; Armstrong ; Susquehanna ; 

 Allegheny. 



2. Rhus hirta (L. ) Sudw. Staghorn Sumac. (Man. p. 600; I. F. 

 /. ^7^<?.) In dry or rocky soil, N. S. toGa., Ont., S. Dak., Mo. and Miss. 

 —Pennsylvania: PiKE; Monroe; Northampton; Columbia; Lu- 

 zerne ; Bucks ; Delaware ; Chester ; Franklin ; Huntingdon ; 

 Allegheny. 



3. Rhus glabra L. Smooth Upland Sumac. (Man. p. 600 ; I. F./. 

 2349.) In dry soil, N. S. to B. C, Fla., Miss, and kxiz.— Pennsylvania ■' 

 Monroe ; Pike ; Luzerne ; Northampton ; Bucks ; Philadelphia ; 

 Delaware; Chester; Lancaster; Dauphin; Franklin; Hunt- 

 ingdon ; Allegheny. 



4. Rhus aromatica Ait. Fragrant Sumac. (Man. p. 601 ; I. F./. 

 23S0.) In rocky woods, Ont. and Vt. to Fla., Minn., Kans. and La.— 

 Pennsylvania : Cumberland ; Franklin ; Huntingdon ; Blair ; 

 Allegheny. 



5. Rhus Vernix L. Poison Elder or Sumac. (Man. p. 601 ; I. F. 

 /■ ^SS^-) lu swamps, southern Ont. to R. I., Fla., Minn., Mo. and La. 

 — Pennsylvania : Northampton ; Bucks ; Delaware ; Chester ; 

 Lancaster ; Dauphin ; Lebanon ; Berks. 



