OuDBS 70.— COMPOSITE. 459 



flowers is frequently cultivated as a hardy annual. St. about 3f high, striata, 

 smooth, erect, with alteruate, clasping Iva Fls. large, terminal, selitary, yellow. 

 Aug. 



2 C. carin^tum Willd. AvrnMil; Jus. Mpinnaie, fleshy, smooth ; invol. scales 

 carinate. — Native of Barbary. Hds. large and beautiful ; disk purple, raya white, 

 with a yellow base. A variety has rays entirely yellow. Jl. — Oct. (0. tricolor 

 Andr.) 



3 C. Sin^nse Sabine. Perennial; Ivs. coriaceous, siaiked, sinuaie-pinnatifid, 

 dentate, glaucous ; rays very long. — A native of China, where it has l^g been 

 .cultivated and highly esteemed for its beauty. A great number of varieties have 



been produced with double, seraidouble, and quilled flowers of every possible 

 shade of color. It is of very easy culture in any common soil. The plants are 

 propagated by divisions, by suckers, and by cuttings. (Pyrethrum Sinense DO.) 



75. TANACE^TUffl, L. Tansey. (Said to be a corruption of Odvarog, 

 deathless ; for the durable flowers.) Involucre hemispherical, imbri- 

 eate, the scales all minute ; receptacle convex, naked ; pappus a slight, 

 membranous border ; achenia with a large, epigynous disk. — Lvs. alter- 

 nate, much dissected. Fls. yellow, discoid. 



T. vulgdre L. I/os. pinnately divided, segments oblong-lanceolate, pinnatifld and 

 inciaely serrate ; h Js. fastigiata-corymbous, ray fls. terete, tubular, S-iooihed. — If 

 in old fields and roadsides. Stems clustered, 2 — 3f high, branched above into a 

 handsome corymb of yellow flowers. Aug. — The whole plant has a strong and 

 aromatic smell and bitter taste. The seeds are anthelmintic. A variety called 

 double tansey occurs, with dense and crisped leaves. § Eur. 



2 T. Huron^nse Nutt. Lvs. bipinnaiely divided, lobes oblong, often again pin- 

 natifld ; hds. large, cory mbd ; ray fis. flattened, wiequaUy 3 to 5-clefi. — Shores of 

 Lake Huron and Mackinaw Strait, to Hudson's Bay. Plant 1 to 3f high, some- 

 what tomentous. Hds. larger than in No. 1, citron-yellow. 



76. ARTEMIS'IA, L. Wormwood, (fee. (Probably from Artemis, 

 one of the names of the goddess Diana.) Involucre ovoid, imbricate, 

 wjth dry, convenient scales ; receptacle without pales ; disk-flowers 

 numerous, ^ , tubular, ray flowers few, often without stamens and with 

 a subulate corolla or none ; achenia with a small disk ; pappus 0. — 

 Bitter herbs. Lvs. alternate. Cor. yellow or purplish, discoid. 



§ Receptacle -villous or hairy. Flowers all fertile Nos. 1, % 



§ Receptacle naked Flowers all fertile. Leaves or faeginenta lanceolate Nos. 3, 41 



— Flowers all fertile. Leaves or soginents linear Nos. .'i, 6 



— S'lowers of the disk sterile. Leaves or segments linear Nos. 7 — 9 



1 A. Pontioa L. Romak Wormwood. I/os. iomentourS beneath, cauliae 

 ones bipinuate,' leaflets linear ; hds. roundish, stalked, nodding. — y Common io 

 gardens, where it arises 3 or 4^ with simple branches and racemes of yellow 

 flowers. Head with 24 flowers, those 6f the ray about 6. From Austria, -f- 



2 A. Absinthium L. Common' Wormwood. Lvs. muUifid, clothed with short, 

 sWcy pubescence, both sides ; segments lanceolate ; hds. hemisperioal, drooping ; re- 

 ceptacle hairy. — If Growing among rubbish, rocks, and by roadsides, N. Bug., 

 Can. Stems angular, branched, with erect racemes of nodding, yellow flowers. 

 The whole plant is proverbially bitter, and of powerful medicinal qualities as a 

 tonic, stomachic, &c. § Eur. 



3 A. Ludovioi^na Nutt. GanesccnUy tomentous all over ; lvs. lanceolate, lower 

 inoisely and remotely serrate or subpinnatifld, upper entire ; Ms. ovoid, subses- 

 sUe, arranged in a simple, slender, leafy panicle. — y Lake and river shores, Mich, 

 to Mo. W. to Oreg. Stem 2 — pf high, simple or branched. Leaves quite vari- 

 able in size and also in pubescence, sometimes nearly smooth. Heads small aad 

 crowded. 



4 A. vulgaris L. MuawORT. Los. canesceni-tomenUms beneath, eauline ones pin- 

 natifld, segra. lanceolate, acute, subdentato, floral ones entire, linear-laneeol.ite ; 



