168 ROSACE AE 



15. RubuB Baileyanus Britton. Baii,Ey's Dewbbrry. (Man. p. 

 498 ; I. F. y! J^QOS- ) In dry woods and thickets, Me. to Va. — Pennsyl- 

 vania : M0NK.0B ; Northampton ; Bucks ; Lancaster ; Delaware. 



16. Rubus hisplduB L- Hispid or Running Swamp Bi<ackberry. 

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

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

 Schuylkh,!, ; Luzerne ; Northampton ; Bucks ; Montgomery ; 

 Phii<adelphia ; Chester ; Lancaster ; Frankwn ; Delaware ; 

 Allegheny. 



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

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

 Pines ; Bucks ; ClEarEIELD. 



7. DALIBARDA. L. 

 1. Dalibarda repena L. Dalibarda. (Man. p. 499; l.V.f.igo^.) 

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

 Monroe ; Carbon ; Schuylkill ; Lackawanna ; Tioga ; Cambria ; 

 Erie 



8. DRYMOCALLIS Fourr. 



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

 foil. (Man. p. 499 ; I. F.y. 1^13.) 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. Dasiphora fruticosa (L.) Rydb. Shrubby Cinquepoil. (Man. 

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

 Greenland to Akska, Ni 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 (Solaud.) Rydb. ThrEE-TooThEd 

 ClNQUEFOiL- (Man. p. 500; I. F./. 11)33.) In rocky places, especially 

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

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

 vania : Lackawanna, summit of Bald Mt. 



11. PRAGARIA 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. Virginiana. 

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



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



