464 



COMPOSITAE. 



[Vol. III. 



7. Artemisia frigida Willd. Pasture Sage- 

 Brush. Wormwood Sage. (Fig. 4004.) 



Artemisia frigida Willd. Sp. PI. 3: 183S. 1804. 



Perennial, woody at the base, densely silky- 

 canescent all over; stem branched or simple, 10'- 

 20' high. Leaves 'A'-iYz' long, ternately or 5- 

 nately divided into numerous short acutish mostly 

 entire lobes less than }<" wide, the lower and 

 basal ones petioled, and often with a pair of en- 

 tire or 3-cleft divisions near the base of the peti- 

 ole, the upper sessile and less divided; heads 

 rather numerous, racemose or racemose-panicu- 

 late, short-peduncled, nodding, about 2" broad; in- 

 volucre hemispheric, its bracts oblong, canescentor 

 tonientose; receptacle villous-pubescent; central 

 flowers fertile. 



On dry plains and in rocky soil, Minnesota to the 

 Northwest Territor>- and Idaho, south to Nebraska, 

 Texas and New IMexico. Called also Wild Sage. 

 July-Oct. 



8. Artemisia Absinthium L. Common 

 Wormwood. Absinth. (Fig. 4005.) 



Artemisia Absinthium L. Sp. PI. 848. 1753- 



Shrubby, finely canescent; stem much branched, 2°- 

 4^ high. Leaves 2'-5'long, 1-3-pinnateIy divided into 

 numerous oblong to obovate obtuse lobes, the lower 

 long-petioled, the upper short-petioled or sessile, the 

 uppermost commonly linear and entire; heads numer- 

 ous, yellow, racemose-paniculate, drooping, short-pe- 

 duncled, 2"-2^2" broad; involucre hemispheric, its 

 outer bracts linear, the inner much broader, scarious- 

 margined; receptacle pilose-pubescent; central flowers 

 fertile, the marginal ones fertile or sterile. 



In waste places. Newfoundland and Hudson Bay to 

 Massachusetts, western Ontario and New York. Natu- 

 ralized or adventive from Europe, mostly escaped from 

 gardens. Old English names, Maderwort, Mugwort, 

 ilingwort, Warmot. Juh--Oct. 



Abrotanum L. Southernwood. (Fig. 4006.) 



Artemisia Abrotanum L. Sp. PI. 845. 1753. 



Perennial, somewhat shrubby; stem puberulent or 

 glabrous, much branched, 2°-4° high, the branches 

 short, erect or ascending. Leaves glabrous or some- 

 what pubescent, i'-3' long, 1-3-pinnately parted into 

 linear obtuse entire lobes about Yz" wide, or the 

 uppermost linear and entire, the lowest petioled; 

 heads several-flowered, yellow, very numerous, nod- 

 ding, racemose-paniculate, 2"-2Yz" broad; involucre 

 nearlj- hemispheric, pubescent, its outer bracts lan- 

 ceolate, acute, the inner ones obovate; receptacle 

 glabrous; central flowers fertile. 



In waste places, Massachusetts to westeni New York, 

 southern Ontario, and Nebraska. Adventive from con- 

 tinental Europe. Old English names. Lad's Love, Boy's 

 Love. Slovenwood, Old Man. 



Artemisia procera Willd., a similar species, but with 

 glabrous involucre, is stated by Dr. Gray \ Syn. Fl. i: Part 

 2, 370 1 to have escaped from gardens at ButTalo, N. Y., but 

 is not recorded in Mr. D. F. Day's Catalogue of Plants of 

 that vicinity. 



