148 Rydberg: Notes on Rosaceae 



north than either of these two species. It resembles much R. 

 Baileyanus X nigrohaccus in the leaf -form, but has more coarsely 

 toothed leaflets and an erect stem. The following specimens 

 belong here: 



Prince Edward Island: between Summerside and Mis- 

 couche, 1909, Blanchard 801 (sheet 2). 



Quebec: Kingsmere Lake, 1906, Rydberg 7944. 



Ontario: Ottawa, 1906, Rydberg ygzd. 



Maine: Calais, 1909, Blanchard ^02; Brownsville, Blanchard 



S03. 



Nova Scotia: Granville, 1909, Blanchard 706; Kentville, 



Blanchard 707. 



New Brunswick: Marysville, 1909, Blanchard 601. 



Connecticut: Southington, 1906, Blanchard 97 (set 4); Port- 

 land, Blanchard 97 (set 5); Meriden, 1904, Andrews 18; Southing- 

 ton, Andrews 4. 



Vermont: cultivated, Blanchard 212; Mendon, 1899, Eggles- 

 ton 1220. 



New Jersey: Newfoundland, 1908, Mackenzie 3126; Luc- 

 ceasunna, 1909, Mackenzie 4149; Mt. Arlington, Mackenzie 1393; 

 Budd's Lake, Mackenzie 1517, 1519. 



In some cases specimens are found intermediate between this 

 and R. nigrobaccus. They may be hybrids, but as I have not 

 studied these specimens in the field, no attempt has been made 

 to segregate the hybrids. 



Rubus nigrobaccus Bailey. This has been known since about 

 a hundred years ago as R. villosus, having been mistaken for R. 

 villosus Ait., which, however, is antedated by R. villosus Thunb. 

 Who was first responsible for the error is hard to tell. Both 

 Michaux and Pursh might have had this plant in mind, but both 

 practically copied Aiton's description. Pursh, however, makes 

 the following remarks: "Known by the name Black-berries," 

 which would suggest this or R. argutus rather than R. procumbens 

 or R. plicatif alius. The same year that Pursh published his Flora, 

 although a little later, Bigelow's Florula Bostoniensis appeared, 

 and here there is no doubt about what plant the author had in 

 mind. Since that time the plant was known as R. villosus until 

 Professor Bailey saw the type of Aiton's R. villcfsiis and proposed 



