208 REPORT OF THE CONFERENCE ON GENETICS. 
intermediate between its parents in respect of its method of perennation. 
The stems arise close to the surface of the ground or beneath it. The 
sreat majority of them, including the strongest as well as the weakest, die 
Fic. 49.Frowertna Suoors or (4) Rupus occrpEntaris, (8) R. RoS#FOLIUS, 
(c) R. occrpenraris x R,. ROSAFOLIUS. NATURAL SIZE, 
back to the base. The strongest stems are usually much branched, the 
branches being often long and spreading a good deal, and bearing 
branchlets. Many stems, however, including the tallest, are unbranched. 
Last spring, of 18 stems present, 4, all unbranched, did not die to 
