Order 70.— COMPOSITE. 459 



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

 smooth, erect, with alternate, clasping lvs. Fls. large, terminal, solitary, yellow. 

 Aug. 



2 C. carinaturu. "Willd. Annual; lvs. bipinnate, fleshy, smooth ; in\ol. scales 

 carinate. — Native of Barbary. lids. large and beautiful; disk purple, rays white, 

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

 Andr.) 



3 C. Sinense Sabine. Perennial; lvs. coriaceous, stalked, sinuate-pi nnatifid; 

 dentate, glaucous; rays very long. — .V nativo of China, where it bus long been 

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

 been produced with double, semidouble, 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 cutting3. (Pyrethrum Sinense DC.) 



75. TANACETUBI, L. Tansey. (Said to be a corruption of Qdvaroc, 

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

 cate, 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. vulgare L. Lvs. pinnalely divided, segments oblong-lanceolate, pinuatifid and 

 incisely serrate; his. fastigiate-corymbous, run} fls. terete, tubular, 3-toot.hed. — % 

 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 stroug and 

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

 double tans3y occurs, with dense and crisped leaves. § Eur. 



2 T S. Huronense Nutt. Lvs. bipinnatehj divided, lobes oblong, often again pin- 

 natifld; hds. large, corymbd; ray fls. flattened, uiequally 3 to 5-cleft. — 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. 



7S. ARTEMIS'IA, L. Wormwood, &c. (Probably from Artemis, 

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

 with 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, 2 



§ Keeeptacle naked. — Flowers all fertile. Leaves or segments lanceolate Nos. 8, 4 



—Flowers all fertile. Leaves or segments linear Nos. 5, 6 



— Flowers of the d*ok sterile. Leaves or segments linear Nos. 7 — 9 



1 A. Pontica L. Roman Wormwood. Lvs. tomentous beneath, cauline 

 ones bipinnate, leaflets linear; hds. roundish, stalked, nodding. — 2£ Common in 

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

 flowers. Head with 24 flowers, those of the ray about 6. From Austria. + 



2 A. Absinthium L. Comm in Wormwood. Lvs. multifid, clothed with short, 

 silky pubescence, both sides; segments lanceolate; hds. hemisperical, drooping; re- 

 ceptacle hairy. — If Growing among rubbish, rocks, a' id by roadsides, N. Eng., 

 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. Ludoviciana Nutt. Canesccntly tomentous all over ; lvs. lanceolate, lower 

 incisely and remotely serrate or subpinnatifid, upper entire ; hds. ovoid, subses- 

 sile, arranged in a simple, slender, leafy panicle. — If. Lake and river shores, Mich. 

 to Mo. TV", to Oreg. Stem 2 — 3f 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. Mcgwort. Lvs. canescentrtomentous beneath, cauline ones pin- 

 natifid, segm. lanceolate, acute, subdentate, floral ones entire, linear-lanceolate ,• 



