TANACETUM.] COMPOSITE. 215 



17. TANACE'TUM, L. TANSY. 



Herbs, often shrubby below, strong-scented. Leaves alternate, usually 

 much divided. Heads solitary or corymbose, subglobose, discoid, yellow ; 

 invol. bracts many-seriate, edges scarious ; receptacle convex, naked. 

 Outer fl. 1-seriate, female, tubular, 3-4-toothed. Disk-fl. tubular, male, 

 4-5-toothed ; anther cells not tailed. Fruit 3-5-angled, disk large ; 

 pappus 0, or an irregular membrane. DISTRIB. Europe, N.^and S. Africa, 

 temp, and cold Asia, N. America ; species about 30. ETYM. doubtful. 



T. vulga're, L. ; leaves 1 -2-pinnatifid, segments inciso-serrate. 



Waste places, from Shetland southd., and in Ireland and Channel Islands ; 

 probably naturalized only ; fl. Aug.-Sept. Perennial, glabrous or pubescent, 

 Stem 2-3 ft., grooved and angled, leafy. Leaves 2-5 in., oblong, gland-dotted, 

 upper ^-amplexicaul, lower petioled. Heads many, in. diarn., corymbose, 

 dull yellow ; peduncle stout, ebracteate ; invol. bracts coriaceous, appressed, 

 outer acute shorter, inner obtuse, edges narrow scarious. Outer Ji. exceed- 

 ing the involucre, rarely 0, obliquely truncate. Fruit obovoid, 5-rib- 

 bed ; disk membranous, lobed. DISTRIB. Europe (Arctic), Siberia, N.W. 

 America ; iutrod. in the U. States. Bitter, tonic, vermifuge and febrifuge. 



18. ARTEMISIA, L. 



Herbs, often shrubby below, bitter or aromatic. Leaves alternate, often 

 much cut. Heads small, racemed or panicled, discoid, yellow or purplish ; 

 invol. bracts few- seriate, margins scarious ; receptacle very narrow, flat or 

 convex, naked hairy or fimbriate. Flowers few, all tubular, anemophilous ; 

 outer female with 3- toothed corollas ; the rest male or 2-sexual with 5- 

 toothed minute corollas ; anther-cells not tailed. Fruit obovoid or oblong, 

 disk minute ; pappus 0. DISTRIB. N.temp. zone ; species about ]50. 

 ETYM. 'Apre^s, the Greek Diana. 



1. A. campes'tris, L. ; leaves nearly glabrous, segments very slender, 

 heads drooping glabrous, outer flowers only fertile. 

 S indy heaths, Norfolk and Suffolk ; fl. Aug.-Sept. Perennial, not aromatic. 



subsessile, ovoid ; receptacle glabrous. Ray-corollas dilated below. DISTRIB. 

 Europe, temp. Asia. 



2. A. vulga'ris, L. ; leaves broad white woolly beneath, segments 

 broad acuminate, heads erect woolly, flowers all fertile. Mugwort. 

 Hedgebanks, &c., N. to Shetland ; ascends to 1,200 ft. in Northumbd. ; Ireland : 

 Channel Inlands; fl. July-Sept. Perennial, aromatic. Stem 2-4 ft., erect, 

 reddish, angled, grooved, branched. Leaves 2-3 by 1-2 in., glabrous above, 

 margins recurved; petiole with pinnatifid auricles. Heads in crowded, 

 panicled, short, erect, woolly spikes, ovoid, reddish-yellow ; receptacle 

 glabrous. Ray-corollas slender, cylindric. DISTRIB. Europe (Arctic), N. 

 Africa, N. and W. Asia to India and China. Formerly used to flavour 

 drinks. 



