WEEDS IN THE MEADOW. 



S19 



ErUjemn annuum, Pers., E. hellidifoli um, 

 Mulil., E. PUlaiMpluiium, L., E. sfrigosmn, 

 Mulil., jiro other species of similar liabit to fig- 

 ure 105, and an^ quite unsightly and common 

 ill thin meadows. 

 lludhechia hirla, L. (Cone-flower.) This 

 Vm.m.-KHocrnn ^^'^"T ^ccd has a purple cone surrounded with 

 '&f Tx-.ul(!sild': ^J'^'^low ray-flowers. It is becoming more com- 

 mon, and has made its way from the West to 

 the Xew England States. 



Fi(i. lOfi. Fia. lor. Fig. 108. 



FiQ. lO^.—AcMUa'a MiUefnlium, L. An aclieno, two views. 1 xlO.-(Sudworth.) 

 Fio. lan.-Lcucanthcmiim vuhjare, T.uin. (Ox-eye.) Achene enlarged .-(Scribner ) 

 safn"- Tx- W^-\sXor^^^^^^^^^^^ thistle); an achene, also a cr,«s section of "the 



Leucanthemnm. vulgare. Lam. (Ox-eye, White Daisy.) This is 

 one of the worst perennial Aveeds or weeds of any kind which 

 infests the meadows and pastures of this country. The seeds 

 are sown with grass seed. 



Cnicns arvensis, Iloffm. (Canada Thistle). This is often con- 

 sidered the arch fiend of weeds, and is too well known in many 

 localities. The heads are small and the scales of the involucre 

 scarcely prickly i)ointod. It is a perennial rooting very deeply. 

 Its course Avestward is likely to be checked by the fact that it has 

 usually failed to jjroduce seeds on tlie prairies. It is often dice- 

 cious. Some account of this pest is given in connection with the 

 chapter on clover. 



