COMPOSITE. (COMPOSITE FAMILY.) 227 



margined. Pappus composed of several short chaffy scales ; that of the disk 

 flowers mostly with 2-4 longer awns. Perennial herbs, resembling Asters. 



1. B. diffusa, Ell. Stem with long and slender branches ; leaves linear, 

 entire; heads small, terminal; acheuia narrowly margined, hairy; pappus 

 very short, two-awned. Damp soil, Sept. - (Jet. Stem 3 - 4 high. Kays 

 purplish. 



2. B. glastifolia, L'Her. Stem paniculate; leaves rigid, lanceolate, 

 sparingly serrate ; the upper ones linear, entire ; heads rather large ; acheuia 

 broadly margined ; pappus of few short bristles, and 2-4 long awns. River 

 swamps, Florida, and northward. July -Sept. Stem 3 -5 high. Rays 

 white. 



3. B. asteroides, L'Her. Stem paniculate, the branches short ; leaves 

 lanceolate, entire ; acheuia smooth, narrow-margined ; pappus very short, 

 without awns. Swamps, North Carolina. Stem 2 -3 high. Heads inter- 

 mediate in size between the two preceding. 



19. BELLIS, Tourii. DAISY. 



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

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

 Acheuia obovate, compressed, wingless. Pappus none. Low herbs, with 

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



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

 leaves o'oovate, entire, the upper ones lanceolate, sessile ; heads peduncled ; 

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



20. SOLIDAGO, L. GOLDEN-ROD. 



Heads few- or many-flowered. Rays 1-16, rarely wanting, pistillate. Disk 

 flowers tubular, perfect. Scales of the involucre imbricated, rarely with 

 spreading tips. Receptacle flat, mostly alveolate. Achenia terete, many- 

 ribbed. Pappus simple, of numerous scabrous mostly capillary bristles. 

 Perennial (rarely shrubby) erect plants, with alternate leaves, and small heads 

 of yellow flowers. 



1. CHRTSASTRUM. Scales of the involucre with herbaceous spreading tips: 

 bristles of the pappus unequal, some of them thickened upward: racemes short, 

 forming a long and narrow leafy panicle. 



1. S. discoidea, Torr. & Gray. Pubescent or hairy; stem simple or 

 branched ; leaves ovate, acute, abruptly narrowed into a petiole, the lower ones 

 coarsely serrate; racemes composed of 3-6 large 10-15-flowered heads; 

 rays none; achenia smooth. (Aster? discoideus, Ell.) Rich woods, Flor- 

 ida, Georgia, and westward, Sept. Flowers yellowish white. Stem 3 - 5 

 high. 



2. S. squarrosa, Muhl. Stem stout, simple, pubescent above; leaves 

 large, smoothish, oblong, acute, serrate, the lower ones tapering into a long 

 winged petiole ; the upper sessile and entire ; racemes shorter than the leaves, 

 composed of 3-6 clustered heads; rays 12-16, showy; achenia smooth. 

 Mountains of Georgia, and northward. Sept. Stem 2 -4 high. Lowest 

 leaves 6' - 8' long. Heads 1 6 - 24-flowered. 



