474 Rydberg: Notes on Rosaceae 



Quebec: Macoun 6'jgo4. 



Ruhus canadensis X pUcatifolins. The almost unarmed stem 

 of Ruhus multiformis delicatior Blanchard indicates a hybrid of 

 R, canadensis. The pUcate leaves suggest R. plicatif alius . 



Maine: Kennebunkport, 1905, Blanchard 81. 



Nova Scotia: Halifax, Macoun 81426. 

 9 Ruhus hispidus X pUcatifolins. Ruhus semierectus Blanchard 

 I take as a hybrid. The small flowers, bristly stem and broad 

 leaflets suggest R. hispidus, the pubescent strongly veined and 

 subplicate leaflets, R. plicatif olius. 



Maine: Kennebunk, 1905, Blanchard 67. 



New York: vicinity of Tannersville, 1891, Vail. 



Nova Scotia: Macoun 5792, 19076. 



Ruhus heterophyllus X recurvans. No other specimens than 

 those cited in the North American Flora, viz., Blanchard 256, 

 from Huntington Hills, Massachusetts, have been seen which 

 may be referred to this hybrid. 



Ruhus argutus X jiagellaris. This as well as all the other 

 hybrids of R. fiagellaris were discovered by Mr. Bicknell. For 

 specimens and notes see his paper in the Bull. Torrey Club 38: 

 103-133, 191 1. The other hybrids are Ruhus fiagellaris X frond- 

 osus, R. fiagellaris X procumhens, R. Baileyanus X fiagellaris, R. 

 fiagellaris X hispidus and R. fiagellaris X Enslenii. 



Ruhus nigrohaccus X procumhens. This was first recognized 

 by Mr. Bicknell, but under the name R. allegheniensis X procum- 

 hens. 



New York: Merrick, Long Island, 1910, Bicknell 30; Hew- 

 lett, Bicknell 28; Lynbrook, Bicknell 26. 



Massachusetts: Wauwinet, Nantucket Island, 1910, Bick- 

 nell 27. 



Ruhus argutus X procumhens. This was also first recognized 

 as a hybrid by Bicknell. Ruhus multispinus Blanchard matches 

 Bicknell's specimens very closely. 



New York: Rockville Center, Long Island, 1909, Bicknell; 

 Hewlett, Bicknell 68; Lawrence, Bicknell 67. 



Massachusetts: Nantucket Island, 1899, Bicknell 29; 1910, 

 Bicknell^ 82, 83; Reheboth, 1906, Blanchard 96, set 2; Plymouth, 

 1906, Blanchard 96, set 3. 



