Rydberg: Notes on Rosaceae 153 



Brainerd, who have studied the plant in the field, claim that it is 

 perfectly distinct, rather common and well-fruiting, and the latter 

 stated to me that it did not act as a hybrid. Furthermore, it is 

 found higher up in the mountains than R. nigrobaccus. It differs 

 from R. canadensis X nigrobaccus in being almost glandless. If 

 glands are present, they are sessile or subsessile. It may have 

 originated as a hybrid, but evidently now is an established species. 

 R. orarius Blanch., I think, should be referred here. The only 

 difference is the somewhat broader leaflets. 



Rubus amicalis Blanch. This was first described as R. amabilis, 

 which name, however, was preoccupied and R. amicalis was sub- 

 stituted. It is closely related to R. canadensis, but is best kept 

 distinct, although the characters are not very strong. It has a 

 very limited distribution in the north. The following specimens 

 belong to it. 



Nova Scotia: Digby 1909, Blanchard 714; road from Brazil 

 Lake to Ohio, Blanchard 713; Kentville, Blanchard 716; Bridgetown, 

 Blanchard 715; Pictou, Blanchard 717; between Antigonish and 

 Lochaber, 1906, C. B. Robinson 468; Maybou, C. B. Robinson 232. 



New Brunswick: St. Stephens, 1909, Blanchard 607; Painsic 

 Junction, Blanchard 602; Grand Bay, Blanchard 609. 



Maine: Kennebunk, 1905, Blanchard 75; Isle au Haut, 1909, 

 Arthur so, 58. 



To this species I also refer some odd forms from Newfoundland 

 with nearly unarmed stems 1-1.5 cm. in diameter, coarser toothed 

 leaves and leafy inflorescence. Such are: 



Newfoundland: Topsail, 1901, Howe & Lang, 1232, 1330. 



Rubus canadensis L. The history of this species has been 

 given by Bailey and Blanchard, so nothing more needs to be said. 

 R. Millspaughi Britton was based on southern specimens. These 

 cannot be separated from the northern plant, not even as a variety. 



Rubus elegajitulus Blanch. This might be of a hybrid origin, 

 the parents being R. canadensis and R. nigricans or R. vermontanus, 

 but it is now a well established species and differs in many respects 

 from the hybrids of those species. The stem is armed with weak 

 prickles rather than bristles, and these are confined to the angles 

 of the stem. It resembles R. canadensis X nigricans most, but 

 the inflorescence does not have the gland-bearing bristles of the 

 inflorescence of nearly all of the R, nigricans hybrids. 



