116 
IOWA ACADEMY OF SCIENCES. 
Ranges from New Mexico to Wyoming and across the 
plains. It has migrate eastward, being common in Iowa 
and Missouri, and is reported from Illinois, Indiana, Ohio and 
New York. It is everywhere recognized as a bad weed. Here, 
from its abundance, it ranks as one of the worst. (Eastern 
and Western Weeds. Halsted, Bull. Torrey Botanical Club, 
XIX., Feb. 1892, p. 46.) (Proc. Am. Ass’n Adv. of Science, 
Indianapolis meeting, Vol. XXIX., p. 308.) (Check List of 
American Weeds, No. 4,561.) 
Arizona. — ByLoew. (Rothrock Botany, G. M. Wheeler’s 
Geographical Surveys West of the 100th Meridian, p. 207). 
Canada. — Ottawa. “Spontaneous within the limits of the 
city of Ottawa for a number of years.” (Fletcher in Macoun 
Catalogue of Canadian Plants, part II., p. 348.) 
Colorado. — Denver, 1873 — 1876. ‘ ‘ When I was in Colorado 
from 1873 to 1876, I found S. rostratum growing almost every- 
where on the plains in the vicinity of Denver. Plants occupied 
dry ground, and grew from ten to twelve inches high, many 
being not more than six or eight.” (W. A. Henry.) 
Fort Collins. ' ‘ My first acquaintance with the plant dates 
from 1890, my first year in Colorado. It was then spoken of as 
a bad weed by farmers, and I presume has been known as such 
since farming began in Colorado. It is more troublesome some 
years than others, as only a small proportion of the seed 
matures.” (C. S. Crandall.) 
Plains near Greeley, August, 1871. (W. M. Canby.) 
Denver, (B. H. Smith.) Canon City, (Brandagee, Porter.) 
Plains of the Platte, (Coulter.) “Common on the plains.” 
(Porter and Coulter, Synopsis of the Flora of Colorado. 
Hayden, Geological Survey. Miscellaneous Publication No. 4, 
p. 104.) Manitou, August, 1881 
Dakota, North. — Lamoure, Jamestown, Valley City, as a 
scattering oddity. Fargo, 1894. (Bolley.) 
Dakota, South.— “ Generally distributed throughout the 
state; not so abundant in the eastern part. Carried by rail- 
roads.” (Thomas A. Williams, Brookings.) 
Valley Junction, (E. J. McCullock.) Pierre, 1839 (C. A. 
Geyer.) Pierre, (Eloise Butler.) Vermillion, (Todd.) 
Georgia. — Macon, Carmilla, (A. W. Chapman.) 
Illinois. — Brendel says that the weed comes from the far 
west, the seeds being dropped probably by freight cars. 
