476 Rydberg: Notes on Rosaceae 



Ruhus argutus X nigricans. I cannot distinguish R. adscend- 

 ens Blanchard from Mr. Bicknell's hybrid. The following speci- 

 mens belong here: 



New York: Smith town, Long Island, 1808, Bicknell 8g. 

 New Jersey: Allamuchy Mountains, 1906, Mackenzie 2108, 

 2joo; Succasunna, 1909, Mackenzie 4153. 



Connecticut: Southington, 1906, Blanchard go; 1903, Blanch- 

 ard 262,224; Londonderry, Blanchard 246; igo^., Andrews 53,57, 56. 

 Massachusetts: Essex County, Oakes. 



Rubus frondosus X nigricans. From this I cannot separate 

 Ruhiis abbrevians Blanchard. The following specimens belong 

 here : 



Massachusetts: Long Pond and Trot's Swamp, Nantucket 

 Island, 1910, Bicknell 31, 32. 



Connecticut: Southington, 1906, Blanchard 95. 

 Ver]MONt: Windham, 1904, Blanchard 57. 

 Pennsylvania: German town, Meehan 867 g. 

 Riibus nigricans X recurvans. R. semisetosus Blanchard I 

 regard as a hybrid between R. nigricans and R. recurvans. The 

 following specimens belong here: 



Connecticut: Southington, 1903, Blanchard 201, 202, 225; 

 Londonderry, Blanchard 247 ; Plainville, igo6, Blanchard gi, set i; 

 also 1903,2^1,203. 



Rhode Island: Rocky Point, 1906, Blanchard gi, set 3. 

 Nova Scotia: Sable Island, Macoun 2iig3, 21183 (these 

 specimens are doubtful). 



Rubus amicalis X nigricans. Rubus tardatus Blanchard is prob- 

 ably also a hybrid, the parents being R. amicalis and R. nigricans. 

 Mr. Blanchard's specimens are the only ones seen. 



Rubus nigricans X pergratus. In my opinion R. peculiaris 

 Blanchard is also a hybrid, viz., of R. nigricans and R. pergratus. 

 Besides Mr. Blanchard's specimens the following belong here: 

 Quebec: vicinity of Montmorency Falls, 1905, Macoun 67go4, 



67905- 



Rubus canadensis X nigricans. Rubus junceus Blanchard is 



probably also a hybrid. Besides the specimens distributed by 



Mr. Blanchard, the following are referred to it. 



