492 COMPOSITAE (COMPOSITE FAMILY) 
WILD CHAMOMILE 
Matricaria Chamomilla, L. 
Other English names: Horse Gowan, German Chamomile. 
Introduced. Annual or winter annual. Propagates by seeds. 
Time of bloom: June to August. 
Seed-time: July to September. 
Range: Atlantic States, westward to Ohio. si 
Habitat: Fields, roadsides, and waste places. 
Very like the preceding species, but with rather pleasantly 
aromatic foliage. Stem smooth, much branched, one to two feet 
high. Leaves pinnate, twice or thrice divided into many linear 
lobes. Heads numerous, terminal, about three-fourths of an inch 
broad, on very slender, naked peduncles; rays ten to twenty, 
white, drooping as they mature, pistillate, fertile; disk-florets 
perfect and fertile, yellow, the receptacle at first rather flat but 
becoming conic and hollow; bracts of the involucre oblong, obtuse, 
green, with brown, scarious margins. Achenes short, three-ribbed, 
and without pappus. 
Means of control the same as for Mayweed. 
PINEAPPLE WEED 
Matricaria suaveolens, Buchenau. 
(Matricéria matricarioides, Porter.) 
Other English name: Rayless Chamomile. 
Native. Annual. Propagates by seeds. 
Time of bloom: May to August. 
Seed-time: June to September. 
Range: Atlantic States from New Brunswick to Pennsylvania, 
naturalized from the Pacific Slope where it is native, and com- 
mon as far east as Wyoming and Montana. 
Habitat: Fields, roadsides, and waste places. 
This plant not only has found its way East, but has gone abroad 
and is naturalized as a weed in northern Europe. Stem rather 
stout, six to eighteen inches tall, smooth, branching, and very 
leafy. Leaves pinnate, twice or thrice dissected into short, very 
narrow, and sharply pointed lobes; when bruised they have an 
odor suggestive of pineapples. Heads very numerous on short 
