496 +  CGOMPOSITAE (COMPOSITE FAMILY) 
florets usually all tubular or sometimes with an outer row of 
imperfectly developed rays; these are pistillate, the central florets 
perfect, all fertile. 
crown for pappus. 
Means of control 
Achenes angled or ribbed, with a five-toothed 
Small areas may ,be grubbed out, or killed with Caustic soda or 
hot brine. Or the roots may be starved by successive close cut- 
ting throughout the growing season. 
Fic. 345,— Com- 
mon Mugwort (Arte- 
misia vulgaris). X 4. 
COMMON MUGWORT 
Artemisia vulgaris, L. 
Other English names: Felon-herb, Sailor’s 
Tobacco. 
Introduced. Perennial. Propagates by seeds. 
Time of bloom: July to October. 
Seed-time: August to November. 
Range: Nova Scotia to Ontario and Michigan, 
southward to New Jersey and Tennessee. 
Habitat: Roadsides and waste places; along 
streams and ditches. 
Also called Wormwood, and kept on sale 
under that name in drug stores. Stem one 
to three feet tall, smooth or nearly so except 
the growing branches, which are finely white- 
woolly. Leaves alternate, one to four inches 
long, deeply pinnatifid into narrow oblong or 
spatulate segments, which are again cut and 
toothed, the lower ones usually petioled,.the 
upper ones sessile, often with lobes entire; 
all are smooth and dark green above but 
covered with fine, white wool beneath. The 
numerous heads are in spiked panicles, held 
nearly erect; each head is about one-sixth 
of an inch broad and only the central florets 
are fertile; bracts of the involucre dry and 
scarious. Achenes very small, obovoid, with- 
out pappus. (Fig. 345.) 
