OF THE UPPER MISSOURI. 
209 
PLATANACE2E. 
Platanus occidentalism Linn. Abundant on the rich bottoms of Missouri and Kansas • 
but ceases to appear about one hundred miles above Council bluffs. 
JU GLAND ACEiE. 
Juglans cinera , Linn. Big Sioux. 
Juglans nigra , Linn. Does not extend above latitude 43°. 
CUPULIFEILE. 
Quercus tinctofia, Bartram. Council bluffs and Big Sioux. 
Quercus rubra, Linn. With preceding. 
Quercus macrocarpa, Michx. Extends to mountains. 
Quercus obtusiloba, Michx. Bad lands.' 
Corylus Americana 9 Walt. Abundant around Council bluffs. 
BETULACEiE. 
Betula glandulosa , Michx. Laramie mountains, August 26th. 
Alnus -— ? Black hills. 
SALICACEiE. 
Salix longifolia , Muhl. In different forms along Missouri and Yellowstone. 
Salix nigra , Marshall. Council bluffs. 
Salix —- —? Fort Pierre. 
Salix -- ? Forks of White river. 
Salix —- ? Fort Pierre, June 18th. 
Salix - ? Medicine creek. , 
Populus tremuloides , Michx. Black hills. 
Populus monilifera, Ait. A large tree, constituting by far the greater portion of the 
timber along the valley of the Missouri. 
Populus -—. Called in the West “ bitter Cottonwood.” Makes, its first appear¬ 
ance near Fort Laramie. Have never observed it along the Missouri. A few 
small trees observed near the head of the Shyenne, at the base of Bear Peak. 
CONIFEBuE. 
Pinus Engelmanni, Torr. On the Yellowstone. 
Pinus ponderosa , Douglass. Black hills. 
Abies Douglassi. Bad lands of the Judith. 
Juniperus Yirginiana , Linn. Along Missouri to mountains. 
Juniperus communis , Linn. Fort Union. 
vol. xii.— 2 T 
Missouri 
Botan ical 
Garden 
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