§26 COMPOSITTAL, Vou til. 
g. Artemisia Abrotanum L. Southernwood. Mig. sro. 
Artemisia abrotammn Lo Sp. PL &as. urs. 
Perennial, somewhat shrubby; stem puberulent: or 
ehibrous, much branched, 2° 4° ligh, the brineches 
short, ereet or ascending, Leaves glabrous or some. 
what pubescent, 1-3" long, Laeptimately parted inte 
linear obtuse entire lohes about 4° wide, or the upper- 
most linear and entire, the lowest petioled; heads sev- 
cral-fowered, yellow, very numerous, nodding, race- 
mose-panicukite, 224" broad; iuveluere uearly hemi- 
spheric, pubescent, its outer bracts lanceolate, acute, 
the tuner ones obovate; receptacle ghibrous; central 
flowers fertile, 
Tn waste places, Massachusetts to western New York, 
southern Ontario, and Nebraska, Adveative from can 
tinental Europe. Old Tagtish nanies, hi's-love, hoys’love, 
slovenweod, old-inan, sweet benjamin, 
Artemisia précera Willd, a similar species, but with 
labrous involucre, is recorded as cacaped Crom gardens at 
Sulalo, N.Y. 
WV 
1o. Artemisia 4nnua L. Annual Wormwood, 
lip. 4580. gy 
Artemisia annua L. Sp. PL 847. 1783. 
Annual, glabrous throughout, much branched, a° 5° 
high. Leaves 2-6 long, finely 2 3-pinnately dissected 
into very narrow short, obtuse lobes, the lower and 
basal ones slender-petioled, the upper sessile and less 
divided, but none of them entire; heads very nu- 
merous, about 1 broad, drooping, borne on very 
slender pedtunetes of about their own length or lesss 
involucre hemispheric, ghibrous, its bracts few, ovate 
to anes receptacle glabrous; flowers commonly all 
fertile. 
Tn waste plices, Ontario to New Tampshire, Virginia 
West Virginia, Tennessee, Kansas and Arkansas, a Indl 
weed in some plices. Adventive or naturalized frou 
Asia, Summer. 
11. Artemisia biénnis Willd. Biennial Worm- 
wood, Tig. yskt. 
Artemisia biennis Willd, Phyloge. oi. czuq. 
Annual or biennial, glabrous throughout; stem very 
leafy, usually branched, eq" high, the branches nearly 
erect, Leaves 1-3" long, 0 2-pinniately divided into 
linear or linear-oblong, acutish, serrate or incised 
lobes, the lowest aot tale, the uppermost less divided 
or rarely quite entire; feads about 4” broad, not 
drooping, sessile and exceedingly numerous in axillary 
plomertles which are crowded, forming a compound 
spicate inflorescence, the subtending leaves muel ex- 
cceding the chisters; involucre nearly hemispheric, its 
bracts green, searious-miargineds receptacle naked; 
central flowers fertile. 
Native from ‘Pernnessee to Nebraska, Manitoba, British 
Columbia and California, now widely distributed as a weed 
from Manitoba to Nova Scotia, south to Missouri, Ken- 
tucky and Delaware, Auge Oct, 
