RAMBLING ROSES 



533 



divided into some nineteen or so groups following their botanical affini- 

 ties, and it is worthy of observation that substantially all the parents 

 of our ramblers belong to one only of these groups. R. multiflora, 

 R. Wichuraiana, R. moschata, R. arvensis, and R. sempervirens are all 

 allied and have all been used largely. R. setigera, the one American 

 kind belonging to the group, has been used to some slight extent. 

 More extension into other groups is needful, and with care and 

 patience some unthought-of results will repay the workers on these 

 lines. 



