COMPOSITES. 627 



Var. Georgianus, Gray. Taller (l^°-2° high), and more slender, 

 corymbosely branclied above ; lower leaves lanceolate, sparingly serrate ; 

 corymb larger and more loosely flowered ; ray-flowers sterile, the style short 

 or abortive. — Mountains of Georgia. September. 



ERIGERON, L. 



E. divaricatum, Michx. Annual, decumbent, hirsute ; leaves narrow- 

 linear ; lieads loosely corymbose ; rays purple, not longer than the simple 

 pappud ; achenium nearly smooth. — Mississippi, Tennessee, and nortiiward. 



E. annuum, Fers. Annual, hirsute, erect (2° -4° high) ; lowest leaves 

 oblong, petioled, tootlied, the others lanceolate, sessile, mostly entire ; heads 

 corymbose ; rays numerous, white, not twice the length of the sparsely hir- 

 sute involucre; inner pappus of the ray-flowers scanty or none. — Waste 

 places, Florida, and nortiiward. May and June. 



BELLIS, Tourn. Daist. 



Heads man5'-flowered. Rays pistillate, in a single row. Scales of the in- 

 volucre mostly in two rows, rather thin, equal. Receptacle conical, naked. 

 Achenia obovate, compressed, wingless. Pappus none. — Low herbs, with 

 alternate leaves, and solitary terminal heads of white or purple flowers. 



B. integrifolia, Michx. Annual, branching, smooth (6'-12' high); 

 leaves obovate, entire, tiie upper ones lanceolate, sessile, heads peduncled ; 

 rays pale purple ; achenia rough. — Tennessee (Dr. Gattinger), March. 



GRINDELIA, WiUd. 



Heads many-flowered. Rays pistillate. Scales of the hemispherical Invo- 

 lucre imbricated in several rows. Receptacle flat. Achenia oval or obovate, 

 glabrous. Pappus of 2-8 rigid deciduous awns or bristles. — Perennial 

 herbs, with alternate leaves, and single heads of yellow flowers terminating 

 the branches. 



G. lanceolata, Nutt. Glabrous, corymbosely branching (l°-2° high) ; 

 leaves lanceolate, sessile, sharply serrate ; involucre glutinous, tlie scales 

 nearly equal, ending in a filiform point ; bristles of the pappus mostly 2. — 

 Cedar barrens, Tennessee {Dr. Gattinger), and westward. 



Aplopappus rubiginosus, Torr. Sf Gray, a branching herb 2° -3° high, 

 the leaves with sliarp spreading bristle-pointed teeth, the single heads of 

 yellow flowers terminating the leafy branches, and the villous top-shaped 

 achenium crowned with a copious scabrous pappus, is spontaneous at Punta 

 Rassa, South Florida, doubtless introduced from Texas. 



SOLIDAGO, L. 



S. Missouriensis, Nutt., var. pumila. Low (1° high ), simple, glabrous ; 

 lower leaves lanceolate, rather obtuse, tapering into a petiole, entire, or ob- 



