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 
Fre. 341.—Yellow With a narrow border. They are becoming 
Chamomile (Anthemis much teo common as an impurity of grass 
Peale 258 and clover seeds. (Fig. 341.) 
