Achillea 



Compositae 



989 



50 



Map 2166 



Dyssodia papposa (Vent ) Hilchc. 



~"50 



Map 2167 



Anthemis Cotula L 



50 



Map 2168 



Anthemis arvensis L 



1. Anthemis Cotula L. Dogfennel. Map 2167. This species is 

 doubtless found in every county of the state. It is usually found in waste 

 grounds about habitations. It is also found along roadsides and in fallow 

 fields and waste places in general. I can remember that, when I was a boy, 

 every barnyard was white with dogfennel during its season of flowering, as 

 were most roadsides which, at that time, were new, rich earth. In recent 

 years one rarely sees this species. I have no scientific data concerning its 

 distribution, but I believe it is fluctuating in its abundance. It had almost 

 disappeared until a few years ago when it began to reappear, and now it 

 seems to be becoming abundant. I have discussed this subject with other 

 observers and they agree in the preceding observation. 



Nat. of Eu., Africa, and the Orient; throughout the U. S. and s. Canada. 



2. Anthemis arvensis L. Field Camomile. Map 2168. This species 

 has been reported from Clark, Monroe, and St. Joseph Counties. 



Nat. of Eu. and the Orient; Maine, Que., B. C, southw. to Fla. and Oreg. 



3. Anthemis nobilis L. Common Camomile. Map 2169. I found 

 this species in La Porte County, where it covered an acre in very sandy 

 soil in a yard and adjacent nursery. Peattie reported it as escaped in the 

 Calumet District. The plant is used in medicine and cultivated in gardens, 

 especially by people who still grow their own medicinal herbs. 



Nat. of Eu. ; R. I., southw. to N. C. and Tenn. 



9332. ACHILLEA [Vaill] L. 



1. Achillea Millefolium L. COMMON YARROW. Map 2170. This is a 

 polymorphic species. Our species vary greatly in the pubescence of the 

 stem, leaves, and involucre, in the shape and size of the heads, in the color 

 of the margins of the bracts, and in the shape of the inflorescence. Plants 

 with pinkish rays are not infrequent. These variations have led authors 

 to describe several forms of this species. It is an obnoxious weed, especially 

 in pastures, although some faddists recommend it for lawns. It spreads 



