844 WEED FLORA OF IOWA 



Nelson, A. E. Some common weeds and insects of Nebraska corn 

 fields and potato patches. Nebr. Dept. Pub. Instr. Bull. 18 :32. 



Nelson, Aven. Squirreltail grass (Foxtail), one of the stock pests 

 of Wyoming. Bull. Wyo. Agr. Exp. Sta. 19 :75-79. 



The worst weeds of Wyoming. Bull. Wyo. Agr. Exp. Sta. 

 31 :267-310. 



Norton, J. B. S. Maryland weeds and other harmful plants. Bull. 

 Md. Agr. Exp. Sta. 155:71. 56f. 



Osborne, 0. M. Weed pests of Idaho and methods of eradication. 

 Bull. Ida. Agr. Exp. Sta. 71:36. 17f. 



Ostenfeld, Hansen C. Nogle ny-indslabte Planter Bot. Tids. 19: 

 295-304. 1895. Kecords the occurrence of Panicum capillare, 

 Kochia seoparia, Lcpidium virginicum, Amsinckia intermedia, 

 Solatium rostratum, Coreopsis tinctoria, Iva xanthifolia in 

 Denmark. 



Oswald, W. L. and Boss. Andrew. Minnesota weeds. Series I. De- 

 scriptions and identifications by W. L. Oswald and Eradication 

 by Andrew Boss. Bull. Minn. Agr. Exp. Sta. 129:82. 

 Paczoski, J. Field weeds of the Cherson government. Trudy Byuro 

 Prikl. Bot. (Bui. Agnew Bot.) 4:71-146. 1911. Abs. in Exp. 

 Sta. Eec. 26:135. 

 Pammel, L. II. Canada Thistle. Pr. Bull. la. Agr. Exp. Sta. 

 12:2. 



Horse Nettle as a troublesome weed in Iowa. Bull. la. Agr. 

 Exp. Sta. 42:131-136. 



Noxious weeds. Bull. la. Agr. Exp. Sta. 28 :199-214. 



The problem of weeds in the West. Cont. Bot. Dept. la. 

 St. Coll. Agr. & Meeh. Arts. 44:34-46. Proc. la. Acad. Sci. 

 17 : 34-46. 



Quack and wheat grasses. Bull. la. Agr. Exp. Sta. 83 : 

 397-416. 



Some troublesome weeds of the mustard family. Bull. la. 

 Agr. Exp. Sta. 35:656-686. 



Some weeds of Iowa. Bull. la. Agr. Exp. Sta. 70:297-531. 



The thistles of Iowa and notes on a few other species. Proc. 

 la. Acad. Sci. 8:26. 



Two other troublesome weeds. (European bindweed and 

 Ground burnut). Bull. la. Agr. Exp. Sta. 42:137-139. 



Two noxious weeds. Bull. la. Agr. Exp. Sta. 28:199-214. 



Weed pests. Bull. la. Agr. Exp. Sta. 13:72-75. 



