190 COMPOSITE. 



filial flowers chiefly pistillate and 3 to 5 toothed, forming a 

 kind of ray. Involucre hemispherical; scales imbrica- 

 ted, dry. Receptacle convex, naked. Aciiexia angled or 

 ribbed, with a large flat top. Pappus a short crown. — Bit- 

 ter and acrid strong scented herbs, with alternate \ to 2 pinnate I y 

 dissected leaves and corymbed heads of yellow flowers. 



1. T. vulgaue, L. Common Tanzy. 



S.em erect, smooth; leaner twica-pinnately parted, the leaflets and the margined 

 patiolccut-toothel; corymb d-inse; rays terete ; pappus 5-lobed. 



Cultivated and naturalized, common. Au^. Per. Stem? clus tered 2 to 3 feet 

 k£gh, branched abovs into a handsome- corymb of yellow il rw of Euicpe. 



Var. cri.-pum has the leaves more cut and cri.-p.id. 



44. ARTEMISIA; Linn. Wormwood. 



Dedicated to the Geddess Artemis. 



Heads discoid, few to many-flowered ; the flowers all tu- 

 bular. - 1 disk i arfect; marginal ones pistillate, or 

 ar and perfect, Involucre ovoid j scales 

 imbrica tth dry and scarious margins. Receptacle 

 small and . . naked. Achenia obovoid, with a small 

 summit and no pappus. — Bitter herbs or shrubby plants, with 

 alternate I small heads of yellow or purplish flowers 

 in panided Spikes or racemes. 



* Receptacle naked. Absoia>t:j, Tourn. 



1. A. vulgaris, L. Common Mrigwert. 



Branches and lower surface of the leaves whitish-woolly ; stem-leaves pinnatifid ; 

 tegmenta lanceolate, variously cut or entire: heals erect, ovoid, subeessiie, in open 

 Icafly panicles. 



flanks of streams, and waste places. Per. . Sept., Oct. Stem 2 to 3 fe^t high, 

 branching into a panicle of spicate racemes. Leaves very variable. Ifiadsfcvr. pur- 

 plish. Introduced from Europe and naturalized. 



2. A. Abrotanum ; L.. Southernwood. 



Stem erect; lower leaves bipinnate; upper ones capillary, pinnate ; involucre hem- 

 is pherical, downy. A well known shrubby plant, common in cultiration. Stem 

 about 3 feet high. Leaves alternate much divide I into linear sjgmmts. Flowers 

 nBm2rous, nodding, yellow. Native' of South Europe. 



** Receptacle hairy. Fcow-rs all fer'.ilc. Absixthicm, Tourn. 



3. A. absinthium; L. Common Wormwood.' 



Shrubby, erect, silky-can escent ; leaves bipinnatifid ; segments lanceolate, often 

 incised, obtuse; headi hemispherical, in leafy paniculate racemes, nodding; recep- 

 tacle hairy. Common in gardens.- Aug. Stem 2 to 4 feet high, angular, several 

 from one root. Heads numerous. Flowers yellowish. The whole plant is very 

 bP.ter, and possessed of valuable medicinal properties as a tonic, stomachic, ic. 



4. A. pontica, L. Roman Wormwood. 



SUm-Uaus bipinnate; leaflets linear, tomentose beneath; heads roundish, pednn-: 



