i 
Along the rockier lake shores Populus balsamifera is the common tree; 
Juniperus scopulorum is seen occasionally on the shores of Lake Pend 
Oreille and upper Priest Lake. 
In alluvial embayments Populus tremuloides var aurea reaches its great- 
est development in our region. 
In drying marshy meadows adjacent t lakes or ponds may occur plants 
such as Nymphozanthus polysepalus which under these conditions, is 
stranded and nearly terrestrial, Comarum palustre, Menyanthes trifo- 
liata, Typha latifolia, Dulichium arundinaceum, Hypericum majus, Acorus 
€alamus, Scutellaria galericulata, Naumbergia thyrsiflora, Polygonum 
natans, Veronica scutellata, Mentha arvensis, Lycopuvs uniflorus, and 
L. anericanus, with Spiraea Menziesii fringing drier margins. 
FOREST VaGETATION 
The forested area of ovr region lies chiefly south of the 
Clark Fork Valley between the Montana border and the irregular line 
drawn somewhat diagonally from the lower end of Lake Pend Oreille 
through St. Maries and Boville to Pierce. North of the Clark Fork 
Velley, in the Pend Oreille and Kaniksu National Forests, the forest 
is well developed, but on the east it descends irregularly in isolated 
patches. Along the western margin it straggles out slowly, passing 
finally into the grassiand. Upon the southern margin it disappears 
soutn of the Locnsa River. It ig within this forest that the "white 
