168 ROSACEAE 



15. Rubus Baileyanus Britton. Bailey's Dewberry. (Man. p. 

 498 ; I. F. /. /905. ) In dry woods and thickets, Me. to Va. — Pennsyl- 

 vania : Monroe ; Northampton ; Bucks ; Lancaster ; Delaware. 



16. Rubus hiapiduB D- Hispid or Running Swamp Blackberry. 

 (Man. p. 498; I. F. /. igo2.) In swamps or low grounds, N. S. to Ont. 

 and Minn., Ga. and Kans. — Pennsylvania: Lackawanna; Monroe; 

 Schuylkill ; Luzerne ; Northampton ; Bucks ; ;Montgo:mery ; 

 Philadelphia ; Chester ; Lancaster ; Franklin ; Delaware ; 

 Allegheny. 



17. Rubus nigricans Rydb. Bristly Blackberry. (Man. p. 498.) 

 In moist soil, Newf. to Mich, and Pa. — Pennsylvania : MoNROE, Naomi 

 Pines ; Bucks ; Clearfield. 



7. DALIBARDA L. 

 1. Dallbarda repens L. Dalibarda. (Man. p. 499; I. F.y. /go/.) 

 In woods, N. S. to Minn., N. J., Ohio and Mich. — Pennsylvania: 

 Monroe ; Carbon ; Schu\%kill ; Lackawanna ; Tioga ; Cambria ; 

 Erie 



8. DRYMOCALLIS Fourr. 



1. Drymocallis arguta ( Pursh ) Rydb. Tall or Glandular Cinque- 

 FOIL. (Man. p. 499 ; I. F.y. J913.) On dry or rocky hillsides, N. B. to 

 the Rocky Mts., N. J., 111. and Kans. — Pennsylvania : Northampton ; 

 Lancaster ; Erie ; Allegheny. 



9. DASIPHORA Raf. 

 1. Daaiphora fruticosa (L. ) Rydb. Shrubby Cinouefoil. (Man. 

 p. 499; I. F. y. 1932.) In swamps or moist rockj' places, Lab. and 

 Greenland to Alaska, N. J., 111. and in the Rocky Mts. to Ariz, and Calif. 

 Also in Eu. and Asia. — Pennsylvania : Monroe ; Pike. 



10. SIBBALDIOPSIS Rydb. 

 1. Sibbaldiopsis tridentata (Soland.) Rydb. Three-TOOThed 

 ClNQUEFOiL- (Man. p. 500; I. F.y. 1933.) In rocky places, especially 

 on mountains, Greenland to N. J., on the higher southern Alleghenies, 

 shores of Lake Superior and west to the Canadian Rocky Mts. — Pennsyl- 

 vania : Lackawanna, summit of Bald Mt. 



11. FRAGARIA L. 



Achenes borne on the surface of the accrescent receptacle : leaflets sessile or 

 essentially so. 

 Leaflets thickish : fruit mainly less than 15 mm. long : plants stout : natur- 

 alized .species. i. F. vesca. 

 Leaflets thin : fruit mainly over 15 mm. long : plants slender : native species. 



2. F. Americana. 

 Achenes borne in pits in the accrescent receptacle : leaflets stalked. 



3. F. Virginiatta. 



1. Fragaria vesca L. European Wood Strawberry. (Man. p. 

 501 ; I. F. /. 1910. ) In fields and along roadsides. Nat. from Eu. in the 



