L',")4 coMi'osiT.K. (roMi'osrn: ka.mii.v.) 



spariugly serrate, rnni;li alinvo, paler ami toinciitnsi' hineatli, on sliort peti- 

 oles ; licatls numerous; scales of tlio involuc-re uvate-laneeolatc!, appressed ; 

 rays f) 8. — Dry woods, Florida, and northward. Sej)t. — Stem 3° -5^ I'iyh; 

 the bram-lies forking. Loaves .'J'- 10' long. 



20. H. Schweinitzii, Torr. & (iray. Stem hispid, hramhing ahove ; 

 leaves lanceolate, acuiniuate, sparingly serrate, nearly sessile, very r(jugli 

 above, hoary-tomeutose beneath ; the lower ones opposite, the ujijjer alter 

 uate and entire ; scales of the iuvolucre lanceolate, acute, with spreading tips ; 

 rays about 8. — Upper districts of North Carolina (C'«/7/*). — IStem 3^-5° 

 high. Leaves 3'- 5' long. 



2L H. laevigatus, Torr. & Gray. Stem smooth and glaucous, the 

 brandies forking ; leaves smooth on both sides, opposite, or the upj)ermost 

 alternate, oblong-lanceolate, acute, entire or serrulate, oljscurely 3-ril)l)ed, 

 nearly sessile ; scales of the involucre ovate, acute, appressed with spreading 

 tips; rays 6-8. — North Carolina (Curtis). — Stem 4° -5^ '''g''- Heads 

 twice as large as those of No. 1 9. 



22. H. longifolius, Pursh. Very smooth throughout ; stem slender, 

 branching; leaves mostly opposite, liuear-lauceolate, sessile, entire; the lowest 

 tapering into slender petioles and sparingly serrate ; heads few; scales of the 

 iuvolucre ovate-lanceolate, as long as tiie disk; rays about 10. — Damp rich 

 soil in the westeru districts of Georgia (Elliott). — Stem 3" - 4° high. Leaves 

 6' - 8' long. Rays small. 



57. HELIANTHELLA, Torr. & Gray. 



Achenia 4-angled, compres.scd, slightly winged, crowned with a ciliate 

 border, or the angles prolonged into persistent, often lacerated, chaffy scales ; 

 otherwise like Heliauthus. — Slender perennial herbs, with narrow leaves, 

 and showy heads of yellow flowers. 



1. H, grandiflora, Torr. & Gray. Hirsute; stem simple; leaves very 

 scabrous, alternate or opposite, lanceolate-linear, or linear, entire ; scales of 

 the involucre lanceolate, appressed ; pappus of two obtuse lacerated scales. 

 — East Florida. Oct. — Stem 3° -4° high. Leaves 1'- 2' long. Kays nearly 

 2' long. 



2. H. tenuifolia, Torr. & Gray. Hirsute ; stem simple, or corymbcse at 

 the summit ; leaves narrow-linear, entire, the lower ones opposite or whorled ; 

 the upper alternate ; scales of the involucre lanceolate-subulate, spreading ; 

 pappus of 2-4 acute awns. — Dry sandy pine barrens, West Florida. June 

 -July. — Stem l°-2° high. Kays I'-U' long. 



58. VERBESINA, L. 



Heads mostly many-flowered ; the rays pistillate, rarely wanting. Scales 

 of the involucre imbricated in 2 or more rows. Receptacle convex or conical. 

 Achenia erect, compressed, winged or wingless, 2-awued. — Perennial herbs, 

 often with winged stems, and mostly yellow flowers. 

 * Hfads small : rnijs 1 - 5. 



1. V. occidentalis, Walt. Stem 4-winged, branching; leaves oppo- 

 site, ovate or ovate-lanceolate, acuminate, sharply serrate, 3-ribbed; corymbs 



