6 MONTANA AGRICULTURAL COLLEGE SCIENCE STUDIES. 



Nathaniel J. Wyeth, a Boston fur-trader, on his return from his 

 first expedition, appears to have ascended the Clark's Fork (called by 

 him the Flathead) to its junction .with the Missoula, thence up that 

 stream and the Bitter Root through the Big Hole Basin to the 

 Salmon River in Idaho and eastward to the Big Horn River, 

 following down this and the Yellowstone to the Missouri (April to 

 August, 1833).* His collections were described by Xuttall and are 

 in the Academy of Sciences at Philadelphia, a duplicate set being at 

 the New York Botanical Garden. 



Charles A. Geyer, a German botanist, collected in Montana in 

 1844. His route appears to have been up the Clark's Fork to the 

 Flathead mission and from there up the Bitter Root and down the 

 Jefferson and Yellowstone in the path Clark marked out. His 

 plants were taken to Europe, determined by Hooker, and distribut- 

 ed to various herbaria, Kew or the British Museum and the Gray 

 Herbarium securing the more important sets. Geyer himself gives 

 a general account of the country (London Jour. Bot. vols. 4 and 5) 

 and Hooker describes his plants (London Jour. Bot. vol. 6 and 

 Hookers Jour. Bot. vols. 3, 5, 7 and 8). 



T. A. Culbertson in 1850 collected along the Missouri as far as 

 the mouth of Milk River, but principally about the mouth of the 

 Yellowstone.** His collection is probably in Porter's private herbari- 

 um and more or less of his specimens in the older herbaria. The re- 

 sults of his work were published by T. C. Porter (5th Ann. Rep. 

 Smith Inst. pp. 133-136). 



J. G. Cooper, a physician attached to the Stevens Expedition of 

 1853-4, appears to have made collections in the state from Ft. Ben- 

 ton to Helena and westward, though they appear to have been few 

 and fragmentary. Sets of these plants are at the Gray Herbarium, 

 the New York Botanical Garden and the National Museum. He 

 issued a single paper on the trees of the state (Am. Nat. 3 : 

 1870). 



*"The Correspondence and Journals of Captain Nathaniel J. Wyeth, 

 1831-36" in "Sources of the History of Oregon," Vol. 1, Pts. 3-8. Eugene, 

 Ore., 1899. Oregon Historical Society. 



"*Culbertson, T. A. "Journal of an expedition to the Manvaises Terres 

 and the Upper Missouri in 1850." 



