SAUSSUREA 
Saussuvea densa (Hooker) Rydberg 
Saussutea is one of the rarer members of the Aster Family. It is 
nearly related to the thistles, but in habit of growth and in the size 
of its flower heads it is very different. It prefers stony limestone slopes 
of moraines, and is confined to the higher altitudes. The flowers grow- 
ing in dense heads, ate attractive to bees. After the flowers have faded 
the downy “seeds” form an equally showy flat head. 
In the Canadian Rockies saussurea is a conspicuous plant because 
it is so different from any other flower. Its range is limited to that 
region. | 
The specimen sketched was obtained neat the base of Tilted Moun- 
tain, fifteen miles by trail north of Lake Louise, Alberta, Canada, at 
an altitude of 7,000 feet. 
PLATE I91I 
