64 B Canadian Arctic Expedition, 1913-18 



Saussurea alpina (L.) DC. 



Has a horizontal, woody rhizome with scale-like leaves, but the root- 

 system is very scantily represented. A dense rosette of leaves terminates the 

 rhizome and surrounds the floral shoot. 



Crepis nana Richards. 



This interesting little plant forms dense cushions from only 2 to almost 10 

 cm. in diameter. The primary root persists as a relatively thin, but deep, 

 persisting root, branching only near the very slender apex. In continuation 

 with the root an erect, subterranean stem arises, bearing numerous, long- 

 petioled, green leaves and numerous, very short flowering stems which have, 

 from two to four heads. The subterranean stem is quite thick, and shows very 

 plainly scars from withered leaves, crowded on account of the internodes being 

 extremely short. 



