216 COMI'OSIT.i:. (( OMI'O.SITK FAMILY.) 



22. E. villosurn, Swartz. Stem tunieiitose, brauiliiiig ; leaves nhort- 

 petioled, c)\au-, oliiusc or iiiULTouate, rustA-pulieacfiit, lieiiticulate or entire, 

 3 ribbed ; eor_viiibiieii.se; beads 10- 15-Howered ; scales of tiie involucre about 

 10, eqiKil, linear, obtuse, shorter than the (lowers; anthers slightly ex.serted ; 

 achenia hispid; pappus shorter tlian the liuwers. — South l-lnrida. — Leaves 

 rigid, r- l-i' long. 



» « * Sralts of the involucre (green) etjudi, in a sinijle row: licuds S-'M-fiuiv- 

 ered : Uiins. achenia, etc. not resinuus-dolted : leaves on slender petioles. 



23. E. ageratoides, L. Smooth; leaves thin, ovate or slightly cordate, 

 acuminate, coarsely and sharply serrate, 3-ribbed ; heads 10-20-fl&wered ; 

 scales of the involucre linear, acutish, slightly pubescent; achenia smooth. — 

 Rich shaded soil. Sept. — Stem commonly branching, 2° -3° high. Leaves 

 3' -5' long. Flowers white. 



24. E. aromaticum, L. Pubescent ; leaves thickish, ovate, or the low- 

 est cordate, crenate-serrate, roughish, on short petioles, barely acute ; heads 

 8- 15-flowered ; scales of the involucre linear; achenia smooth. — Dry open 

 woods, common. Sept. — Stem 2° higli. Leaves V -2' long. Flowers 

 white. 



25. E. incisum. Stem long, .slender, smoothish, liranchiug ; leaves 

 small, ovate, tapering to the obtuse apex, abruptly contracted at base, coarsely 

 and une(]ually serrate, 3-nerved, twice as long as the very slender petioles; 

 corymbs loose, compound, pubescent; heads 12-14-flowered; corolla white, 

 achenium slightly ])uboscent. — Clear Water Harbor and Manatee, Florida. 

 Nov. — Stem 2° -3° long. Leaves 1'- 1^' long- Flowers very fragrant. 



26. E. incarnatum, Walt. Pubescent ; stem slender, reclining, diffusely 

 branched ; leaves on long petioles, deltoid, acuminate, truncate or cordate at 

 the base, coarsely serrate ; corymbs numerous, small ; lieads about 20-flowereu ; 

 scales of the involucre linear, acute, 2-ribbed ; achenia hispid. — Kich shaded 

 soil, Florida to North Carolina. Sept. — Stem 2° -4° long. Leaves l'-2' 

 long. Flowers pale purple. 



§ 3. Scales of the involucre nearli/ equal, imbricated in 2-3 rows: heads many- 

 flowered : receptacle conical, naked. — Conoclinium. 



27. E. CCBlestinum, L. Smoothish ; leaves deltoid-ovate, the lowest 

 often cordate, acuminate, coarsely serrate ; heads 30 - 60-flowered ; flowers 

 bluish purple. — Eich soil. Sept. — Stem 2° high. 



14. MIKANIA, Willd. 



Heads 4-flowered. Scales of the involucre 4. Receptacle naked, flat. 

 Anthers partly eKserted. Corolla, achenia, etc. as in Eupatorium. — Chiefly 

 climbing herbs, witli opposite mostly cordate leaves, and whitish flowers. 



1. M. scandens, Willd. Smooth or pul)escent ; leaves on slender peti- 

 oles, acuminate, toothed or entire ; corymbs numerous, on short axillary 

 branches or peduncles ; scales of the involucre linear, acute ; achenia minutely 

 glandular. — Swamps. August - Sept. — Stem twining. 



