BOTANICAL INFORMATION. 479 
BOTANICAL INFORMATION. 
Notes on the VEGETATION and general character of the 
Missouri: and OREGON TERRITORIES, made during a 
Botanical journey from the State of Missouri, across the 
south-pass of the Rockv Mountains, £o the Pacific, dur- 
ing the years 1843 and 1844; by CHARLES A. GEYER. 
(Itis with no small satisfaction we are able to announce to 
our scientific friends that Mr. Charles A. Geyer, who dis- 
tinguished himself by the Botanical collections he made 
with Mr. Nicollet in 1838 and 1839, between the Missouri 
and Mississippi Rivers, has recently arrived in England with 
a very valuable and beautifully preserved collection of Plants, 
gathered in the Upper Missouri, on the Rocky Mountains, 
and in the Oregon Territory, during the years 1843 and 1844. 
Mr. Geyer is thus honourably mentioned by Drs. Torrey and 
Gray in the 2nd volume of their admirable “ Flora of N. 
America,” p. 69 :—“ We are greatly indebted to the kindness 
of M. Nicollet for an extensive collection of dried specimens, 
made during his survey of the country between the Missouri 
and the sources of the Mississippi, under the orders of the 
Secretary of War. The collection was formed by Mr. C. 
A. Geyer, an assiduous German Botanist, who was attached 
to the Expedition.* The specimens are very complete, and 
* Mr. Geyer commenced his investigations in the Western territories 
of the United States so early as the year 1835, when, with only one — 
attendant, he started from New York, and penetrated the Missouri plains 
as far as Big Nemahaw, Lower Platte river; but owing to fever and ill- 
treatment by a party of Indians, he was obliged to return with very little 
success. It was in going back to St. Louis, on board the steamer of the 
American Fur Company, that he met M. Nicollet, who invited him to 
accompany his expedition to the sources of the Mississippi in 1836 and 
1837. This, however, at the time he declined; but joined that enter- — 
prising gentleman in surveying the Missouri, (as high up as the Little | 
Missouri), and almost the whole of that immense country (now Daco- 
taha and Iowa territory) between the Missouri and Mississippi. In 1840 
Mr. Geyer collected about St. Louis. In 1841 he made a tour with M. 
