518 THE HANDBOOK FOR PRACTICAL FARMERS 



Descriptive List of the Fifty Worst Weeds op the United States — Continued 



COMMON NAMK. 



BOTANICAL NAME, 



AND DURATION 



OF LIFE 



COLOR, SIZE, AND 

 ARRANGEMENT 

 OP FLOWERS 



SECTIONS 



WHERE 

 INJURIOUS 



METHOD OF 

 SEED 



distribution ; 

 vegetati\t: 

 propagation 



OF THE 

 PERENNIALS 



PLACE OP 



GROWTH AND 



PRODUCTS 



INJURED 



Poison ivy, poison oalc 

 (Rhus toxicodendron), 



Purslane, pusley (Por- 

 tulaca oleracea), A. 



Quack-grass,witch-grass 

 (Agropyron repena ) , 

 P. 



Ragweed, smaller rag- 

 weed {Aml>rosia ela- 

 tior),A. 



Russian thistle, tumble- 

 weed {Salsola pesti- 

 fer), A. 



St.-John's-wort {Eyper- 

 icum perforatum), P. 



Smartweed (Polygonum 

 pennsylvanicum), A. 



Smartweed, marsh 

 smartweed, devil's- 

 shoestrlng (Polygonum 

 muhlenbergii) , A. 



Sorrel, sheep sorrel, 

 horse sorrel (Rumex 

 acetosella), P. 



Sow thistle, perennial 

 sow thistle, field sow 

 thistle ( Sonch us ar- 

 vensis), P. 



Squirreltail grass, 

 squirrel grass, foxtail, 

 wild barley (Hordeum 

 jubatum), A. 



Thistle, Canada thistle 

 (Cirsium arvense), P. 



Thistle, common thistle, 

 bull thistle (Cirsium 

 lanceolatum), B. 



Wild carrot (Daucus 

 car Ota), B. 



Wild oats {Avenafa- 

 tua). A, 



Wild onion, garlic {Al- 

 litim vineale), P. 



Greenish white ; 

 i inch ; pani- 

 cles. 



Yellow ; J inch ; 

 solitary. 



Green ; spike. 



Yellow ; i inch ; 

 small heads on 

 spikes. 



Purplish ; J 



inch ; solitary. 



Yellow ; 3 inch ; 

 cymes. 



Light rose 

 1/16 inch 

 racemes. 



Rose color 

 1/16 inch 

 spikes. 



Red ; J inch 

 panicles. 



Yellow ; i inch 

 heads. 



Green ; spike 

 with long 

 bristly glumes. 



Purple, i inch 



Reddish p u r - 

 pie ; 1 inch ; 



heads. 



White; very 

 small ; umbels. 



Green ; pani- 

 cles ; similar 

 to oats. 



Flowers rare : 

 umbels with 

 bulblets. 



Winter cress, yellow Yellow ; i inch ; 



rocket (Barharea i 

 garia), P. 



Entire United 



States. 



Entire United 

 States. 



Maine to Penn- 

 sylvania and 

 Minnesota. 



Entire United 

 States. 



Minnesota to 

 Washington 

 and south- 

 ward. 



Maine to North 

 Carolina and 

 Iowa. 



Maine to Min- 

 nesota, Flor- 

 i d a , and 

 Texas. 



Indiana to 

 Iowa. 



Entire United 

 States. 



Maine to Min- 

 nesota. 



Minnesota to 

 Texas and 

 California. 



Maine to Penn- 

 sylvania and 

 Washington. 



Maine to Vir- 

 ginia and 

 Washington. 



Maine and Vir- 

 ginia to the 

 Mississippi. 



Wisconsin to 

 Washington. 



Rhode Island to 

 Georgia and 

 west to Mis- 

 souri. 



:Maine to Vir- 

 g i n i a and 

 westward. 



Does not spread 

 fast by seeds ; 

 running root- 

 stocks. 



Tillage imple- 

 ments ; has a 

 long seeding 

 period. 



Seeds of grain 

 and coarse 

 grasses ; creep- 

 ing rootstocks. 



Wind carrying 

 matured 

 plants; in 

 grain and red- 

 clover seeds. 



Wind rolling 

 matured 

 plants. 



In hay and 



grass seed ; 



rootstocks. 

 Wind carrying 



matured 



plants. 



Wind and farm 

 m a chin ery ; 

 rootstocks. 



In clover seed ; 

 creeping roots. 



Wind ; running 

 rootstocks. 



Hay, animals, 

 wind. 



Wind, in hay 

 and straw and 

 in clover and 

 grass seed ; 

 creeping roots. 



Wind, in al- 

 falfa, clover, 

 and grass 

 seeds. 



In foreign clov- 

 er and alfalfa 

 seed ; carried 

 by animals 

 and wind. 



In seed oats. 



Seeds rare ; 

 bulblets car- 

 ried in wheat ; 

 underground 

 bulbs. 



In grain, clov- 

 er, and grass 

 seeds. 



Moist rich land, 



along fences ; 



poisonous by 



contact. 

 Rich cultivated 



land, especially 



gardens ; hoed 



crops. 

 All crops on the 



better soils; 



hoed crops. 



Everywhere, es- 

 pecially grain 

 stubble ; hoed 

 crops and 

 young grass 

 seeding. 



Everywhere ; 

 small grain and 

 hoed crops. 



Meadows, pas- 

 tures, and 

 waste places. 



Moist rich soils ; 

 hoed crops 

 and young 

 grass seedings. 



Wet land, prai- 

 rie, and muck 

 soils; hoed 

 crops, hay, pas- 

 ture. 



Meadows and 

 pastures. 



Grain fields and 

 hoed crops. 



Meadows and 

 pastures; 

 barbed seeds 

 produce sores 

 on live stock. 



All crops. 



Pastures, -mead- 

 ows, and Min- 

 ter wheat. 



Meadows and 

 pastures. 



Oat fields ; awns 

 injurious to 

 stock. 



E verywhere : 

 wheat and 

 dairy products. 



Grain fields, 

 pastures, and 

 meadows. 



