EXOGENS. 85 



Ky., S. W. B. perennis, English Daisy, Easter D. QL. Stem- 

 less; hd. white, purple, or "crimson-tipped;" varieties double, pink 

 or white, with quilled fits. Eur. 6. Callistephus. Pappus setose, 2- 

 seriate, forming a crown. Q. Erect branching stems ; hds. large, 

 daisy-lilce, sol., terminating the branches. China. C. sinensis, China 

 Aster, Reine Marguekite ; ray dark purple; disk yellow. 18' 

 high. Varieties with double fls., pink, white, blue, red, never yellow. 

 7. Solidago. Pappus setose, 1-seriate. Hds. small, in panicled 

 (often 1-sided) racemes, corymbs, clusters ; rays few, yellow, rarely 

 white. Q|. herbs ; st. rod-like, or branching. Many spec, both 

 worlds. S. Virgaitrea, True Golden Eod, 1°-2° high in woods and 

 thickets ; 6'-8' high on sea-cliffs ; handsome. Gt. Brit. Numerous 

 showy but coarser Am. species : S. speciosa, 2°-6° high, panicle large, 

 thyrsoid, Mass. to Ohio, Ga ; S. gigantea, 4°-7° high, large loose- 

 panicled racemes. Can., U. S. ; S. bicolor, 2° high; hds. cream-col- 

 ored or white, clustered, Can., N., Mid., W. States; S. ienuifblia, 

 slender, hds. corymbed, sea-coast, Mass. to La. Tribe 12. Hds. 

 homdgamous ; fits, all tubular ; rarely pale ochreous ; never yellow. 

 Pappus often setose. 1. Liatris. Hds. of several or many small fits, 

 rose-purple, showy. QJ. herbs, wand-like, simple, usually from a 

 button-like corm or tuber; hds. spilied, racemed, or panicled. Many 

 spec, all beautiful ; N. Am. L. elegans, 2° high ; hds. 4-5-flowered, 

 spiked. Va., S. L. squarrosa, Rattlesnake's Master, 1°-3° high, 

 leafy; hds. larger, 1' long, 20-40-flowered, racemed. N. Y.^Penn., 

 W. and S. Corm an antidote for snake-bites. L. scariom, Gay 

 Feather, similar, 4°-5° high. Can. to Ga., La. 2. Mikania. Near 

 Eupatorium ; but hd--. always 4-flowered, stems usually climbing ; 

 often woody ; rarely erect undershrubs. More than 100 spec. ; 3 or 4 

 in Af., trop. Asia ; the rest in trop. Am. ; one, M. scdndens, smooth, 

 elegant climber, with small corymbs of white or pink fragrant hds. ; 

 Mass. to Ga. and La. ; perhaps identical with M. voliibilis, E. Ind., 

 and M. copenszs, S. Af. 3. Eupatorium. Hds. small, of 3-5-8-12-15- 

 30 fits., purple, pink, or while, corymbose, panicled. Q|, herbaceous 

 or woody, erect. Many spec, chiefly Am. ; often aromatic. E./ce«ic- 

 uldceum, Fennel Eupatorium ; hds. 3-5 fits., 3°-10° high ; panicle 

 large, comp. ; fits, ochreous. Va. to Fla. E. joer/oJidfom, Thorough- 

 wort, BoNESET. Medicinal. l°-5° high; Ivs. perfoliate-connate ; 

 hds. white, corymbed. Can., ,U. S. E. ageratoldes, 2°-3° high, hds. 

 8-30 fits., white, corymbed. Can., U. S. ; E. aromdticum, more 

 slender, similar, fragrant; Mass. to La. E. incarndtum, diffuse; fits, 

 pale purple ; N. C. to Fla. 4. Stevia. Q|., herbaceous or woody ; hds. 

 small, with few fits., white, pink, purple, corymbed. Sev. pretty 

 spec. ; trop. Am. 5. Ageratum. 0, QJ.. Hds. small, white or slcy- 

 blue, corymbed. Sev. pretty spec. ; Mex. 6. Conoclinium. 2|. 

 herbs. Near Ageratum, but disk conical. Q|. herbs, l°-3° high. 10 

 spec, trop., sub-trop. Am. ; all closely resembling C. ccelesllnum, 

 Mist Flower; hds. of small, blue-purple (or sky-blue) fits., in fiat 

 corymbs; fragrant. Penn. to 111., S. Tribe 13. lids, homogamous ; 

 fits, all tubular, never yellow. Pappus usually setose ; sometimes 

 paleaceous. 1. Stokesia cydnea. Pappus paleaceous, deoid. Q|. 

 herb. 2° high, downy; hds. large, blue; outer fits, with spreading 

 palmate border, imitating rays; resembling Centaiirea; but style- 

 awns long, hirtellous; and involucre leafy, spiny. S. C., Ga., La. 



