COMPOSITE. (composite FAMILY.) 193 



14. L. paniculata, Willd. Stem visciJ-pubcscent ; leaves smooth ; the 

 lowest spatulate-lanceolate, the upper lanceolate, sessile, small ; heads mostly 5- 

 flowered, in small lateral and terminal eorvmbs, forming a dense oblong panicle. 



— Damp pine barrens, Florida to North Carolina, and westward. Sept. and 

 Oct. — Stem 10-2° high. 



15. L. fruticosa, Nutt. Stem shrubby, smooth ; branches naked above; 

 leaves obovate, not ribbed, the lowest ones opposite ; heads corymbose, 5-flovv- 

 ered ; scales of the involucre lanceolate, acute, dotted. — East Florida. — Leaves 

 I'long. 



10. KUHNIA, L. 



Heads 10-25-flowercd. Flowers all similar and perfect. Scales of the in- 

 volucre few and loosely imbricated in 2 - 3 rows. Receptacle naked. Corolla 

 slender, 5-toothed. Achenium cylindrical, many-striate. Pappus a single row 

 of strongly plumose bristles. — A perennial herb, with lanceolate or linear dotted 

 leaves, and heads of yellowish-white flowers in panicled corymbs. 



1. K. eupatorioides, L. Stem pubescent, or somcwiiat viscid, mostly 

 branched ; leaves toothed or entire, pubescent, or smoothish beneath, the lower 

 ones sometimes opposite ; corymbs loose or crowded. (K. Critonia, and K. glu- 

 tinosa. Ell ) — Light and dry soil, Florida to Mississippi, and northward. Sept. 



— Stem 2° - 4° high. 



11. BRICKEIiLIA, Ell. 



Heads few- or many-flowered. Scales of the involucre linear, imbricated, the 

 outer ones shorter. Hcceptacle flat, naked. Corolla 5-toothed. Achenia cylin- 

 drical, 10-striate. Pappus a single row of bearded bristles. — Perennial herbs, 

 Avith dotted opposite 3-ribbed leaves, and large heads of pale purple flowers, in 

 terminal corymbs. 



1. B. COrdifolia, Ell. Stem erect, tomentose, mostly branching; leaves 

 ovate, serrate, mostly cordate, pctioled, the upper ones often alternate ; heads 

 large, 30-40-flowercd ; achenia nearly smooth. — Light rich soil. Western Geor- 

 gia and Florida, and westward. Aug. — Stem 2° - 4° high. Flowers showy. 



12. EUPATORIUM, Toum. Thohougiiwort. 



Heads 3 - manj'-flowered. Involucre cylindrical or bell-shaped, the scales in 

 a single row, or imbricated in 2- several rows. Receptacle flat, naked. Corolla 

 5-toothcd. Achenia 5-angled, the sides smooth and even. Pappus a single row 

 of slender rough bristles. — Perennial and mostly resinous-dotted herbs, with 

 opposite or whorled leaves, and white or pui-plish flowers. 



§ 1. Heads corijmhed. 



* Scales of the cylindrical involucre numerous, closeli] imhricated in several rows, the 



outer ones shorter : heads few- or many-fiowered : leaves chiejiy opposite. 



1. E. ivasfolium, L. Herbaceous; stem (3° -5°) erect, terete, rough- 



liairy, at length much branched ; leaves lanceolate, acute at each end, nearly 



]7 



