766 WEED FLORA OF IOWA 



Ohio, 1889 (James) ; central and southern Ohio, 1860 (Newberry) ; 

 Grand Rapids, Michigan, 1886 (Crozier) ; Topeka, Kansas, 1883 

 (Popenoe) ; Connecticut, Iowa, Illinois and Michigan. Within 

 fifty years this perennial weed has extended its range northward 

 in Iowa over 150 miles. This has been possible because of its 

 deep roots. Darlington, in his Flora Cestrica, states that it was 

 introduced by the late Humphrey Marshall into his botanical gar- 

 den at Marshalltown. 



It was reported from Nashville, Tennessee, in 187? by Gattinger ; 

 St. Louis, 1879, by Eggert, and abundant in western Missouri in 

 1886 (S. M. Tracy) ; Rhode Island, 1887 (J. L. Bennett) ; Wiscon- 

 sin, Watertown, 1887 (L. H. Pammel) ; Indiana, Dune Park, 1890 

 (Higbee and Raddin, Bolley, Arthur) ; Illinois, 1891 (Brendel). 

 In Iowa it was reported from Emmet county, 1875 (Cratty) ; south- 

 eastern Iowa, 1876; Fremont county and Council Bluffs, 1883 (Ar- 

 thur) ; Ames, 1886 (Halsted) ; Agency, 1888 (Mrs. Richman) ; Car- 

 roll county, 1890 (T. T. Rutledge) ; Grand Junction, 1890 (Pam- 

 mel) ; Polk City and Mt. Pleasant, 1891 (L. H. Pammel and J. H. 

 Mills) ; Fontanelle, 1892 ; Denison, 1893 (J. Rollins) ; Corning, 1893 

 (W. L. Abbey) ; Iowa City, 1893 (Fitzpatrick) ; Springdale, 1894; 

 Plattesville, 1894 (Studley) ; Postville, 1894 (Orr) ; Mt. Ayr, Guth- 

 rie Center and Story county, 1894 (Sale, Ashton and Pammel) ; 

 Des Moines, 1895 (Carver) ; Decatur county and Des Moines 

 county, 1896 (Fitzpatrick) ; Webster City, 1897 (Garber) ; Shel- 

 dahl, 1898 (Pammel) ; Yorkshire, 1899 (Stokes) ; Dallas Center, 

 1902 (C. B. Royer) ; Mondamin, 1903 (A. Spooner) ; Cooper, 1903 

 (Squires) ; Afton, 1904 (Geo. Williams) ; Audubon, 1905 (J. N. 

 Eskech) ; Keota, 1905 (Klein) ; Lidderdale, 1907 (Mrs. Sander- 

 son) ; Reinbeck, 1907 (Fred Wilcox) ; La Porte, 1908 (R. S. 

 Meath) ; Algona, 1912 (A. Hutchinson) ; Collins, 1912 (J. Leon- 

 ard) ; Brandon, 1912 (Roster) ; Whitten, 1912 (Parrish) ; Ontario, 

 1884 (Fletcher) ; Germany, Mulhausen, 1893 (Scherer Schorler) ; 

 Denmark, 1895 (Ostenfeld). 



Buffalo Bur (Solatium rostratum). 



Has been reported frequently to me during the last few years. 

 The number of specimens sent from Iowa correspondents during 

 the season 1911 and 1912 was numerous, indicating a rapid spread 

 in many different parts of the state. It has always been a native 

 to the plains, finding a congenial home in the buffalo wallows. 

 It was reported by Hartweg in 1837 as being seen north of the 



