COMPOSITAE (COMPOSITE FAMILY) 491 
Means of control 
Frequent cutting close to the ground, throughout the growing 
season, will prevent seeding and will starve 
New infestations, if areas are not too large, 
hand-pulled as soon as observed. 
SCENTLESS CHAMOMILE 
Matricadria inodoéra, L. 
Other English name: Corn Mayweed. 
the perennial roots. 
should be promptly 
Introduced. Annual or winter annual. Propagates by seed. 
Time of bloom: June to August. 
Seed-time: July to September. 
Range: Newfoundland to New Jersey, 
westward as far as Michigan. 
Habitat: Cultivated fields, meadows, road- 
sides, and waste places. 
Not so disagreeable a plant as the ill- 
scented Dog Fennel, but a gross feeder and 
holding ground which should be occupied 
by better plants. Stem one to two feet in 
height, smooth or nearly so, very much 
branched. Leaves alternate, numerous, 
deep green, sessile, twice or thrice pinnately 
dissected into linear, almost thread-like, 
lobes, the rachis somewhat dilated at base. 
Heads terminal on the many branchlets, 
_about an inch broad, on naked peduncles ; 
rays twenty to thirty, white, spreading, 
pistillate, and fertile; disk-florets yellow, 
tubular, perfect, and fertile, their corollas 
five-toothed ; bracts of the involucre green, 
with brown, scarious margins, obtuse, and 
spreading. Achenes strongly three-ribbed, 
tipped with a short, entire-edged or four- 
toothed crown. 
Means of control the same as for May- 
weed. (Fig. 342.) 
Fic. 342.— Scentless 
Chamomile (Matricaria 
anodora). X. 
