﻿ANTHEMIS. Linn. (excl. spec.) ; DC. ft. Fr, Sf prodr. 



minated by single bractless heads. Rays usually white ; the disk yellow. 



1. A. arvensis (Linn.) : diffuse or erect, pubescent ; leaves pinnately 

 parted, the lobes linear-lanceolate, approximate, and with the teeth very 

 acute; the branches leafless at the summit, bearing solitary heads; sea es 

 of the involucre with white scarious margins, obtuse ;-'chaffof the conical re- 



Darlingt.ji. Cest. p. 488. 



Sparingly naturalized in the Northern States. June-Aug.- (p ^"J 

 Wild ChaLnomile of Europe resembles Maruta Cotula,but isnot fetid, with 

 larger heads, fertile ray8,_|fc. 



lid by Nut 



lizednearLew- 



147. ACHILLEA. Linn. ; Schkuhr, handb. t. 255 ; Less. syn. p- ' 

 Heads many-flowered ; the rays few, or 10-20, pistillate, short. Scales of 

 the involucre imbricated. Receptacle flat, or sometimes elongated, jha^y- 



§ 1. Involucre campanulate: rays (white) ^^^^ MJongerjhan theinvoln^^ 



rt): receptacle broad, nearly fiat • 

 nng-likemargins.^FTAB.mcA, Touni., DC 



