478 Rydberg: Notes on Rosaceae 



New York: Tannersville, 1906, Rydberg 7954. 



New Hampshire: Alstead, 1903, Blanchard 236, 234, 235. 



Maine: Biddeford, 1905, Blanchard 86. 



Quebec: East Templeton, 1903, Macoun 59963. 



Rubiis hispidus X nigricans. Mr. Bicknell found this very- 

 variable, sometimes approaching one parent, sometimes the other. 

 My observations agree very well with his. Often the plant 

 resembles a robust R. hispidus, but with the leaflets of the new 

 shoots having a tendency often to be five instead of three. It 

 is then R. hispidus major Blanchard. Sometimes it resembles 

 more R. nigricans in habit. If the leaflets of the new shoots 

 happen to be only three, it is R. trifrons Blanchard. The following 

 represent R. hispidus major: 



Connecticut: Southington, 1904, Andrews 60; Botsford, 

 1897, Eames. 



Maine: Kennebunkport, 1905, Blanchard 84; Kennebunk, 

 Blanchard 85. 



Nova Scotia: Cape Breton, 1901, Howe & Lang 748; Pictou, 

 1907, C. B. Robinson 574, 494. 



Massachusetts: 1879, Perkins. 



Pennsylvania: Pocono Plateau, 1893, Britton. 



New York: Tannersville, 1908, Rydberg 8037. 



Specimens resembling R. trifrons are the following: 



Vermont: West Wadsboro, 1904, Blanchard 55; Stratton, 

 1902, Blanchard 198. 



New York: Tannersville, 1906, Rydberg 7957, 7954 (one 

 sheet of this number Mr. Blanchard has determined as R. his- 

 pidus, the other as R. setosus. Both were from the same plant). 



The following are intermediate or cannot be referred to either 

 form : 



Vermont: North Windham, 1903, Blanchard 251 (named 

 R. setosus); Stratton, 1902, Blanchard 199. 



New Jersey: Musconetcong River, Mackenzie 2108,2300. 



New York: Tannersville, 1906, Rydberg 7956. 



Connecticut: Southington, 1904, Andrews 60. 



Rubus hispidus X vermontanus. In my mind there is very 

 little doubt but R. jacens Blanchard represents this hybrid. A 



