490 



COMPOSITAE (COMPOSITE FAMILY} 



and its achenes are a common impurity in those of grass and 

 clover. 



The same measures should be used for its control as for Mayweed. 



YELLOW CHAMOMILE 

 Anthemis tinctoria, L. 



Introduced. Perennial. Propagates by seeds. 



Time of bloom : June to September. 



Seed-time: July to October. 



Range : Atlantic States from Maine to Maryland ; locally in some 



interior states. 

 Habitat: Fields, roadsides, and waste places. 



An escape from gardens, where it was 

 formerly cultivated for its beauty and for 

 its medicinal qualities, being used as a 

 bitter tonic. It is a persistent weed wher- 

 ever established, as grazing animals will 

 not touch it and it is left to propagate 

 itself. 



Stem one to three feet in height, erect, 

 slender, finely hairy, with a few branches 

 held nearly upright. Leaves also finely 

 hairy, alternate, one to four inches long, 

 pinnate, the oblong segments narrow, 

 pointed, and sharply toothed. Heads 

 terminal, rather few, more than an inch 

 broad, on long, slender peduncles. Both 

 disk-florets and rays are yellow, the latter 

 numbering twenty to thirty, usually two- 

 toothed, pistillate, and fertile; disk-florets 

 perfect and of a darker yellow; bracts of 

 the involucre oblong, obtuse, densely hairy 

 with scarious margins. Achenes four- 

 angled and somewhat flattened, crowned 

 with a narrow border. They are becoming 

 much too common as an impurity of grass 

 and clover seeds. (Fig. 341.) 



FIG. 341. Yellow 

 Chamomile (Anthemis 

 tinctoria). X J. 



