IOWA ACADEMY OP SCIENCES. 
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state, and found as an occasional plant in every part of the 
state, especially in pastures where timber has been cut. It 
shows evidence of having been introduced a long time. Boone, 
1890. Lawler, 1890. Keokuk, 1891 (P. H. Rolfs). Muscatine, 
1891 (F. Reppert). Iowa City (A. S. Hitchcock). 
G. altissimus Willd., var. Jllipendulus Gray. Indigenous in 
Western Iowa, loess hills, is spreading to cultivated fields east- 
ward. Reported from Ruthven (Daniel Ghafiie). Atlantic, 
1895. Marcus, 1895 (N. E. Willey). 
G. arvensis Hofim. Widely distributed in the state, but gen- 
erally confined to small areas. It is reported more frequently 
than any other Gnicus^ though the least common of our 
species, it is interesting to record the fact that occasionally 
seed is produced. Lawler, 1890 (P. H. Rolfs). Greenfield, 1891 
(P. C. Stewart). Marcus, 1890 (Willey). Winterset, 1896. 
Corning, 1895 (A. B. Shaw). 1896 (Chas. B. Collman). Chase, 
Johnson county, 1874 (O. G. Babcock). Taylor, 1895 (J. B. 
Matthews). Maple River Junction, 1895 (L. Barnholtz). Far- 
ragut, 1895 (C. Collman). Randall (C. and G. P. Christianson). 
Redding (Dr. W. A. McClanahpm). Griswold (R. E. Pierce). 
Conrad Grove, Cresco, 1892, with “seed” (C. V. Johnson). Oel- 
wein (J. Thompson). Chickasaw county (P. H. Rolfs). Mus- 
catine (F. Reppert). Barnes City, 1896 (J. W. Jones). 
GicJiorium intyhus L. Corning, 1895 (Ellen Bettonier). Mid- 
way, well established, 1896. Das Moines, 1895. 
Tmgopogon porrifoUus L. Ames, 1896 (C. R. Ball). 
T. ]oratensis L. Ames, in meadow, 1894. Iowa City, 1889, 
Newton, 1889 (A. S. Hitchcock). 
Hieracium aurantiacum L. Ames, 1894, meadows, not estab- 
lished. 
Lygodesmia juncea Don. Indigenous only to western and 
northwestern part of the state, becoming a bad weed in north- 
western Iowa. (C. R. Ball.) Armstrong (R. I. Cratty). Most 
abundant on loess hills; has appeared at Carroll, 1895, Logan, 
and other points along the C. & N. - W. R. R. 
Lactuca scariola L. Abundant everywhere in Iowa except 
northwestern and possibly northeastern. Marshalltown, 1891 
(P. C. Stewart). Ames, 1889 (A. S. Hitchcock). Muscatine, 
1891 (P. Reppert). 
L. pulchella D C. Indigenous to loess hills of western Iowa. 
Has become abundant along roadsides and streets in Sioux 
City. Showing tendency to spread. Ames, 1887, 1889 (A. S. 
