ROSE FAMILY. 



" Of the high-bush blackberry there are three general 

 types or categories : 



" (i) The common high-bush blackberry of the north, 

 which has large, pointed, villous leaves and long, open, 

 pubescent racemes. This is the plant which is ordi- 

 narily taken as the type of Rnbns villosus, but strangely 

 enough, although the common blackberry, it now has 

 no scientific name. I, therefore, propose to call it 

 Rnbus nigrobaccus. 



"(2) The leafy-cluster type of blackberry, which is 

 characterized by a stiffer and mostly shorter growth, 

 by smaller and usually narrower leaves, short and 

 leafy flower clusters and the general, although not 

 complete absence of villousness. This plant must now 

 receive the name Rubus argutus, and its synonyms are 

 Rnbus fro ndosus, and Rubus subercctus. 



"(3) The thornless blackberry type which must now 

 be called Rubus canadensis, a synonym of which is 

 Rubus millspaughii" 



Professor Bailey writes further as follows : 



" Another form of the high-bush blackberry is a plant 

 which Porter has named Rubus dllegheniensis or the 

 Mountain Blackberry. * * * Since Professor Porter 

 has studied the plant in its native state for many years 

 I shall accept the plant as a distinct species. I am the 

 more inclined to this opinion since if the common 

 high-bush blackberry were to be united to the Moun- 

 tain Blackberry, Rubus allegheniensis would have to 

 be taken as the type of the species ; and I should con- 

 sider it unfortunate to take a mountain form as the 

 type of a common continental plant. This arrange- 

 ment gives an analytical and perspicuous treatment to 



150 



