238 co:mim)sit.i-.. (< ovrosm: i-amii.v.) 



2. V. Virginica, L. Sttm 3-win;;c(l ; the hranclies mostly wingless, to- 

 mcntosc ; leaves ovate or ovatc-lanceolatc, irregularly serrate or sinuate-lobed, 

 tiipcring into winged petioles, rough above, downy beneath ; corymbs cymose ; 

 rays 3-4, oval, white; achenia winged. (V. sinuata, Ell) — Dry open woods, 



Florida and northwanl. Sept. — Stem 2° - 6° high. 



55. FLAVERIA, Juss. 



Heads fcw-flowcrcd, <li.<coid, or with a singli.- jiistillatc ray. Involuerc of .3-.5 

 oblong nearly equal scales. Receptacle naked. Aclicnia oblong or club-siiapcd, 

 smooth, striate. Pajipus none. — Tropical herbs, with o]>posite leaves, and 

 densely clustered heads of yellow flowers. 



1- F. linearis, Lagasca. Stem somewhat prostrate at the base, branched 

 above, sinootiiish ; leaves fleshy, linear, connate, entire; corymb dense; scales 

 of the involucre mostly 5; ray often wanting. — Kej' West. — Stem l°-2° 

 high. 



56. GAILLARDIA, Foug. 



Heads many-flowcrcd ; the rays neutral, deciduous. Scales of the involucre 

 in 3 rows, acute, spreading above. Keceptacle convex or hemispherical, naked 

 or fimbrillate. Rays wedge-shaped, palmately 3-lobed. Corolla of the disk 

 with subulate lobes. Achenia top-shaped, hairy. Pappus of 6-10 membrana- 

 ceous 1-nerved awned scales. — Pubescent branching herbs, with alternate leaves, 

 and solitary heads of yellow or purple flowers terminating the branches. 



1. G. lanceolata, Michx. Stem (l°-2°) with long and slender branch- 

 es ; leaves narrow-lanceolate, mostly entire, sessile, the lowest narrowed at the 

 base; rays yellow, sometimes wanting; disk-flowers purple; recei)tacle naked; 

 scales of the pappus 7-9. — Dry pine barrens, Florida to South Carolina. 

 July - Sept. 



57. PALAFOXIA, Lagasca. 



Heads many-flowered ; the ray-flowers pistillate, or none. Scales of the ob- 

 conical involucre in 2 rows, membranaceous at the summit. Receptacle flat, 

 naked. Achenia slender, 4-angled, tapering at the base. Pappus of 6-12 

 membranaceous denticulate scales, pointed hy the prolonged rigid midiib. — 

 Herbs or shrubs, with narrow entire leaves, and heads of white or purple flow- 

 ers in a terminal corymb. 



1. P. integrifolia, Torr. & Gray. Stem (2° high) branched above, 

 smoothish ; leaves lanceolate, rough ; the lower ones often opposite ; rays none ; 

 flowers purplish; scales of the pappus 8 - 9, linear-subulate. ( Poly pteris inte- 

 grifolia, Nutt.) — Dry pine barrens, Georgia and Florida. July- Sept. 



58. HYMENOPAPPUS, L'Herit. 



Heads many-flowered ; tlie flowers all tubular and perfect. Scales of the in- 

 volucre 6-12, oval or obovate, membranaceous, white. Receptacle naked. 

 Corolla slender. Achenia top-shaped, 4-angled. Papjius of 12-20 short obtuse 



