92 IOWA ACADEMY OF SCIENCES. 



IV. Distribution of Some Weeds. 



This short list is only intended to call out information and'should not be 

 considered as giving a complete distribution of the weeds mentioned. 



Gleonie integrifolia, Torr. and Gray. Muscatine; spontaneous, infrequent. 

 Council Bluffs; in streets. (L. A. Williams.) 



Hibiscus trionum, L. Muscatine, Le Claire; a common weed. Ames. 



Orindelia sqtiarrosa, Dunal. Keokuk, Boone. 



Iva xanthifolia, Nutt. Boone, Keokuk; I have also seen this weed in con- 

 siderable numbers near La Crosse, Wisconsin, and La Crescent, Minnesota. 



Dysodia papposa (Vent.) , Hitchcock. Ames, Boone. 



EcUx)ta alba, Harsk. Keokuk. 



Cnicus altissimtis, Willd. Muscatine; in open woods, not occurring in open 

 grounds. Ames. 



C. altissimiis, Willd. var. discolor, Gi'ay. Cedar Rapids, Muscatine, Ames, 

 in fields very common. 



C. arvensis, Hoff. (Canada Thistle.) Taylor and Chickasaw counties, 

 Muscatine, Lawler. 



G. lanceolattis, Hoffm. (Bull Thistle.) Ames, Cedar Rapids, Muscatine, 

 Keokuk. Wayne Co. (Lewis), Bonaparte (B. R. Vale); common in the 

 northwest part of the State. 



Lactuca scariola, L. Ames; streets (Hitchcock; Halstead); Muscatine; 

 Marshalltown, Cedar Rapids, Des Moines, common in sti'eets. Keokuk. 

 This weed is common in all the places mentioned. 



Verbascum blattaria, L. Muscatine; open grounds; infrequent. Ames 

 (Hitchcock), College Farm (F. A. Sirrine). 



Solanum caroli^iense, L. Ames; the weed has been established for three 

 years, on Station grounds. Taylor and Greene counties; Adair county (H. 

 C. Wallace); Keokuk, Muscatine, Lewis Co. (Hitchcock). 



S. rostratum, Dunal. Polk City, Taylor county, Chai'iton (Brown), 1891. 

 Ames, 1891. (Normany;), 1881. Carroll county, 1890. Hamburg (Hitch- 

 cock). Agency (Mrs. Richman). 



Planlago lanceolata, L. Ames; clover fields. 



P. patago7iica, \ax. aristata. Gray. Ames, Keokuk (Rolfs), Van Wert 

 (Hitchcock); var. gnaphalioides, Gi-ay. Humboldt (Harvey). Hamburg 

 (Hitchcock). Sioux Falls (Crozier). 



Chenopodium iirbicum., L. Muscatine, Keokuk. 



C glauciim, L. Muscatine. 



C. ambsosiodies, L. Muscatine; waste ground. 



Atriplex patulum L. var. hastatum. Gray. Keokuk. 



Salsola Kali, L. (Russian Thistle, Common Saltwort.) Lion City, Wood- 

 bury Co. (Hitchcock). It has been reported to me from Blyville, Nebraska 

 (Armstrong) and Ellsworth, Minnesota (Miller). 



Phytolacca decandra, L. (Common Poke, Scoke or Garget.) Muscatine; 

 sparingly in fence rows; September, 1890. 



Polygonum erientale, L. Muscatine; waste ground, not infrequent. 



