168 BADUL^. 



Tlie markedly felted underside of the leaves separates 

 R. rudis and R. Radula from the other species included in 

 this group, except R. scaber; and from that plant their 

 highly arching stem distinguishes them. 



R. Bloxamii is probably best known by the remarkably 

 large size and round form of its leaflets, even upon the 

 flowering shoot; by the panicle being leafy nearly to its top, 

 and its axillary branches being corymbose. 



R. rosaceus shows an approach to the Koehleriani by 

 having a much less marked interval between its prickles, 

 aciculi, and setae, than any of the other Radulce. 



The adpressed sepals, combined with a rather narrow 

 panicle and a very marked interval between the prickles and 

 other arms of the stem characterize R. Hystrix. 



