. 



148 GAMOPETALOUS EXOGENS 



1. T. vulgare, L. Smoothish; leaves bipinnately parted, the lobes 

 and rachis incised-serrate ; rays terete ; pappus 5-lobed. 

 COMMON TANACETUM. Tansey. 



Stems 2 to 4 feet high, somewhat branched above, usually growing in clusters. 

 Leaves subsessile, 3 to 6 or 8 inches long, interruptedly pseudo-pinnate, Heads of 

 flowers depressed-hemispherical; involucre smoothish ; florets deep yellow; akmes 

 5-angled, smooth. 

 Hob. Gardens ; roadsides, Ac. Nat. of Europe. Fl. July. FT. Sept. 



Obs. This was introduced, as a popular domestic medicine, and 

 is now very extensively naturalized. 



ARTEMISIA, L. 



[Dedicated to Artemis, the Diana of the Greeks.] 



Heads few- or many-flowered ; marginal florets pistillate, or some- 

 times all similar and apparently perfect. Involucre subglobose; 

 scales dry, with scarious margins. Akenes obovoid, with an epigynous 

 disk; pappus none. Receptacle small, flattish, naked, or hairy. 

 Perennials : leaves alternate, usually pinnatifid ; heads in panicled 

 spikes, or racemes ; florets yellowish, inconspicuous. 



gl. Receptacle naked, f Central florets abortive ; stem herbaceous. 



1. A. DRACUN'CULUS, L. Radical leaves trifid at apex, stem-leaves 

 linear-lanceolate, subdentate or entire; heads racemose-paniculate. 

 LITTLE-DRAGON ARTEMISIA. Tarragon. 



Plant green and glabrous. Stem 2 to 3 feet high, branching. Leaves 1 to 2 or 3 

 inches long, lanceolate, sessile, mostly entire, narrowed at each end, those on the 

 branches smaller. Heads of flowers globose, small, racemose on the spreading 

 paniculate branches. 

 Hob. Gardens. Nat. of Siberia. Fl. Aug. Fr. Sept. 



Obs. This is cultivated, occasionally, for the sake of its aromatic 

 herbage, which is said to impart a fine flavor to vinegar. 



f f Florets all fertile. * Stemfruticost. 



2. A. ABRO'TANUM, L. Lower leaves bipinnatifid, upper ones sim- 

 ply pinnatifid, segments capillaceous, elongated; heads virgate- 



Smiculate. 

 BATH-HINDERING ARTEMISIA. Southern-wood. Old Man. 

 Plant minutely puberulent. Stems 2 to 3 or 4 feet high, nearly simple, angular, 

 eafy, numerous from the root. Leaves half an inch to an inch and a half long; 

 petioles about % an inch long. Heads of flowers hemispherical, nodding, numer- 

 ous in axillary racemes, forming a long slender leafy racemose panicle. 

 Hab. Gardens. Nat. of Europe. Fl. Aug. Fr. Octo. 



Obs. Cultivated as one of the popular aromatic bitter herbs. 

 * * Stem herbaceous. 



3. A. vulgaris, L. Leaves whitish-tomentose beneath, deeply pin- 

 natifid, the segments often incised; heads in leafy spreading spicate 

 panicles. 



COMMON ARTEMISIA. Mug-wort. 



Stems 2 to 3 or 4 feet high, branching, leafy, often purplish. Leaves subsessile, 

 1 to 3 inches long, segments linear-lanceolate, % a n inch to 2 inches in length, 



