52 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



while in S. tibeticum they are quite smooth and the leaves often 

 somewhat glaucous. The few plants of both species which I have 



Fig. i8. — S. himalense Don. 



seen were not hard to distinguish, but Hooker states that in the 

 Himalayas these and the other native Rhodiolas vary much in almost 

 every character, so from a few specimens one cannot dogmatize 

 about them. 



