RUTACEAE 195 



1. Oxalis Acetosella L. White or True Wood-sorrei,. (Man. p. 

 576 ; I. F./ 22S0.) In eold damp woods, N. S. to Man., tlie mountains 

 of N. C— Pennsylvania : Wayne; Lackawanna; Tioga; Monroe; 

 Carbon ; Bi<air ; Cambria ; Ci,Earfield ; Erie ; Somerset. 



2. Oxalia vlolacea L. Vioi,ET WooD-soRREt. (Man. p. 576; I. P. 

 /. 2251.) In woods, northern N. Eng. to Minn, and the Rocky Mts., 

 south to Fla. and N. Mex. — Pennsylvania: Northampton; Pike ; 

 Bucks ; Montgomery ; Delaware ; Chester ; Lancaster ; Frank. 

 WN ; York ; Centre ; Allegheny. 



3. Oralis Btiicta L- Upright Yellow Wood-sorrel. (Man. p. 



576 ; I. V.f. 2254. ) In woods and fields, N. S. to N. Dak. and Colo., south 

 to Fla. and Tex. — Pennsylvania : Monroe ; Bucks ; Allegheny ; Lan- 

 caster. 



4. Oxalis Bushii Small. Bush's Wood-sorrel. (Man. p. 577.) In 

 dry soil. Pa., Mo. and Ark. — Pennsylvania : Bradford. 



5. Ozalis rufa Small. Red Wood-SORREL. (Man. p. 577.) In 

 woods, Mass. to N. Y., Ga. and Tenn. — Pennsylvania : Monroe. 



6. OxaUs Brlttoniae Small. (Man. p. 577.) In woods and fields, N. 

 Y. to N. C. and Tenn. — Pennsylvania : Monroe, Tannersville ; Lan- 

 caster. 



7. Oxalis cymosa Small. Tall YELLOW Wood-sorrel- (Man. p. 



577 ■yl.'P./. 22s6.) In woods and fields, Ont. to Mich., Fla., Neb. and Tex. 

 Pennsylvania : Northampton ; Bucks ; Dauphin ; Columbia ; Frank- 

 lin ; Chester. 



8. oralis grandis Small. GREAT YELLOW Wood-sgrrel- (Man. 

 p. 577 ; I. F./. 2257.) On river banks, Pa. to 111., N. C. and Tenn. — 

 Pennsylvania : Franklin ; Allegheny. 



Family 4. RUTACEAE Juss. Rue Family. 



Pruit dehiscent, capsular. 1. Xanthoxylum. 



Fruit indehiscent, samaroid. 2. Ptelea. 



1. XANTHOXTLUM L- 

 1. Xanthoxylum Americanum Mill. Prickly Ash. Toothache- 

 TreE. (Man. p. 581 ; I. F.y. 226g.) In woods and thickets, Quebec to 

 Va., west to Minn., Neb. and Mo. — Pennsylvania : Northampton ; 

 Bucks ; Berks ; Lancaster ; Franklin ; Huntingdon ; Lacka- 

 wanna ; Allegheny. 



2. PTBLEA L. 



I. Ptelea^trifoliata L. Three-leaved Hop-tree. (Man. p. 581; 

 I. F./. 2211.) In woods, L. I. to Fla., west to Minn., Tex. and northern 

 Mex. Escaped from cult. — Pennsylvania : Northampton ; Berks ; 

 Philadelphia. 



