6 TWELFTH ANNUAL REPOET. 



the North to lake Winnipeg, and thence by the lake of the Woods 

 and Rainy lake to lake Superior, contains in pages 105 to 123, "a 

 Catalogue of Plants collected in the North-western Territory by 

 Mr. Thomas Say", who accompanied this expedition. These plants 

 were determined and the catalogue prepared for publication by 

 Lewis D. de Schweinitz, excepting the first five species which were 

 by Nuttall. The flowering plants and ferns in this list include 124 

 species, 30 of which are referred definitely to Minnesota. Both the 

 foregoing lists are arranged according to the Linnsean system. 



In Schoolcraft's Narrative of an Expedition through the upper 

 Mississippi to Itasca lake, in 1832, pages 160 to 165 are entitled 

 "Localities of Plants collected in the Northwestern Expeditions of 

 1831 and 1832; by Douglass Houghton, M. D., Surgeon to the Ex- 

 peditions." The genera in this list are arranged alphabetically, and 

 include 247 species, 115 of which are referred to this state. 



Nicollet's report, describing the basin of the upper Mississippi 

 river, from explorations during the years 1836 to 1839, contains in 

 pages 143 to 165, a ''Catalogue of plants collected by Mr. Charles 

 Geyer, under the direction of Mr. J. N. Nicollet, during his explo- 

 ration of the region between the Mississippi and Missouri rivers: 

 by Professor John Torrey, M. D." Of the 446 species in this cata- 

 logue, about 60 were collected in Minnesota, most of the others 

 being from Dakota. 



Owen's geological report presents in its appendix, in pages 606 

 to 622, a "Systematic Catalogue of Plants of Wisconsin and Minne- 

 sota, by C. C. Parry, M. D., made in connexion with the Geological 

 Survey of the Northwest, during the season of 1848." The author 

 states that "the number uf plants comprised in this list is seven 

 hundred and twenty-seven, included in one hundred and six natural 

 orders." Many of them are particularly mentioned as occurring 

 in this state, and often interesting descriptive notes are added, some 

 of which are quoted in the following pages. 



The next contribution to our knowledge of the flora of the state 

 is by Mr. Thomas Clark, on the "Botany of the Northeastern 

 Geological District of Minnesota", forming pages 73 to 82 of the 

 report of the state geologist, Aug. H. Hanchett, M. D., in 1865. 

 About a hundred species are here enumerated. Some thirty of 

 them, however, only occur in cultivation, being mostly the com- 

 mon grains and garden vegetables, noted to show the agricultural 

 capability of the region. The other species of this list include chiefly 

 the most important forest trees, and such shrubby and herbaceous 

 plants as seemed of special interest because of their fruit or medi- 



