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On one abrupt ridge and around the Cirque lake near the Summit of 
Roman Nose Mountain is found the only stand which is known to the 
author, of Larix Lyallii. 
On the tops of a few peaks, such as Snowy Top, Roman Nose and Scotch- 
man, are found restricted tundra relicts with such Species as Luzula 
glabrata, Juncus Parryi, Dasiphora fruticosa, Dryas octopetala, 
Phyllodoce glanduliflora and Cassiope Mertensiana. 
BOTANICAL EXPLORATION IN NORTHERN IDAHO 
Botanical exploration of northern Idaho began with the his- 
torical overland journey of Lewis and Clark in the years 180-06. For 
the itinerary of this expedition we have primarily the running account 
of Lewis. The party crossed the Bitter Root Mountains southwest of the 
present site of Missoula. The choice of this route wag not fortuitous 
but was based upon the existence there of an Indian highway, the Lolo 
trail which follows the divide between the Locksa and Clearwater rivers, 
This is an ancient highway which according to J. E. Kirkwood (Sci. Mo. 
26: 315-328. 1928), "was an old trail, no one knows how old, when Lewis 
and Clark travelled it in 1805. It was important as being the natural 
route from the Nez Perce country of the Lower Snake River to the plains 
of the Missouri by way of Clarks Fork and Blackfoot Rivers". According 
to C. V. Piper, "Hungry Creek" and "Collins Creek" both refer to the 
present Lolo Creek. The Clearwater River, called the "Kooskooskee" by 
Lewis, was reached near the oresent site of Orofino and at this point 
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