TAGETES. LXXV. COMPOSITE. 341 



13. H. DIVARICATUS. Spreading Sun/tower. 



St. smooth, branching or simple ; Ivs. nearly opposite, sessile, ovate-lanceo- 

 late, 3-veined, scabrous above, smooth beneath ; panicle trichotomous, slender, 

 few-flowered. Not uncommon in rocky woods, brooksides, U. S. and Brit. Am. 

 Stem 5f high, glaucous. Leaves rather abrupt at base, tapering to a long, 

 acute point, with obtuse serratures. Flowers large, although small for the ge- 

 nus, few, yellow and very showy. The panicle is either 2 or 3-forked. This 

 plant is much improved by cultivation. Aug. Sept. 



/?. scaberrimus. St. subsimple ; Ivs. thick, exceedingly rough and rigid. Bar- 

 rens, la. ! 



y. Lvs. ternately verticillate. Otherwise as in /?. Barrens, la. ! 



Disk yellow. * * Leaves alternate. 



14. H. GIGANTEUS. (H. altissimus. Linn.) 



Lvs. alternate (the lowest opposite), lanceolate, acuminate, serrate, sca- 

 brous, obscurely 3-veined, tapering at base into short, ciliate, winged petioles ; 

 scales of the involucre lanceolate-linear, ciliate ; pappus of 2 short, slightly fringed 

 scales. Can. to Car. and Ky., in low grounds and thickets. Stem 4 8f high, 

 purplish, branching above into a corymbose panicle of large, yellow flowers. 

 Leaves 2 5' by 1', opposite or alternate in various degrees. Rays 12 20. 

 Variable. 



" /?. ambiguus. T. & G. Lvs. nearly all opposite, sessile and rounded at base. 

 L. I." Torr. $ Gray. 



15. H. TOMENTOSUS. Michx. Downy-leaved Sunflower. 



St. stout, pubescent, branched above ; Ivs. thin, large, acuminate, obscure- 

 ly serrate, scabrous above, tomentose or nearly glabrous beneath, lower ones 

 ovate, petiolate, upper ovate-lanceolate, subsessile ; Ms. long-pedunculate ; 

 scales lance-linear, long-acuminate, villous, squarrose; chaff 3-tooihed, hirsute 

 at summit. Dry soil, 111. to Ga. A large species, 4 8f high, with ample 

 leaves and flowers. Leaves 6 12' by 2 6', some of them tripli-veined. Rays 

 elliptical lanceolate, 18" by 5". Aug. Oct. f 



16. H. GROSSE-SERRATUS. Martens. Notch-leaved Sunflower. 



St. smooth and glaucous ; Ivs. mostly alternate, lanceolate or lance-ovate, 

 long-acuminate, sharply serrate, scabrous aboye, hoary and softly pubescent be- 

 neath, abruptly contracted into naked petioles ; scales lance-subulate, loosely 

 imbricated, sparingly ciliate, as long as the disk. Ohio, Sullivant, &c., la. 

 Plummer, 111., Mead, to La. Allied toH. giganteus. Stem 4 6f high. Leaves 

 6 9' by 1 2' broadest near the base, lower ones rather coarsely serrate. Rays 

 15 20," expanding near 3'. Aug. Sept. 



17. H. TUBEROSUS. Jerusalem Artichoke. Lvs. 3-veined, rough, lower ones 

 opposite, cordate-ovate, upper ovate, acuminate, alternate ; petioles ciliate at 

 base. 9| Native of Brazil. The plant has been cultivated for the sake of its 

 tuberous roots, which are used as a substitute for potatoes. It is naturalized in 

 borders of fields, hedges, &c. Sept. j 



35. TAGETES. 



Named for Tages, a Tuscan divinity, son of Genius and grandson of Jupiter. 



Heads heterogamous ; involucre simple, tubular, of 5 united 

 scales ; ray-flowers 5, persistent ; receptacle naked ; pappus of 5 

 erect awns. Herbs of tropical America. Lvs. pinnately divided. 



1. T. PATULA. French Marigold. St. erect, with spreading branches; seg- 

 ments of the leaves linear-lanceolate ; ped. elongated, subcylindric, one-flowered ; 

 invol. smooth. Plant about 2f high. Flowers orange-yellow. 



2. T. ERECTA. African Marigold. Segments of tJie leaves lanceolate, ciliate- 

 serrate ; ped. 1-flowered, ventricose and thickened at the summit ; invol. angu- 

 lar. The heads are twice larger than in T. patula, and on shorter peduncles. 

 These are well known and popular garden flowers with several varieties. 



