

Tanaobtu m . ] COMPOSITE. 21 5 



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 ft. 1-seriate, female, tubular, 3-4-tootned. Disk-jl. tubular, male, 

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

 pappus 0, or an irregular membrane. — Distrib. Europe, N.tand S. Africa, 

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



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



Yv aste 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. diam., 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. ARTEMIS'IA, 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 150. — 

 Etym. "Apre/xis, 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. 

 Stem and branches ascending, very slender, grooved. Leaves 1-2-piunatifid, 

 young silky ; segments very few, ^-| in., acute, margins recurved ; floral 

 linear, entire. Heads very many, £ in., yellow, in long slender racemes, 

 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 ; 

 Chanuel 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. Bay-corollas slender, cylindric. — Distrib. Europe (Arctic), N. 

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

 drinks. 



