200 



COMPOSITE. (COMPOSITE FAMILY.; 



16. BOLTONU, L'Hei. Boltonia. 



Heads many-flowered, radiate ; the rays numcious, pistillate. Scales of the 

 hemispherical involucre imbricated somewhat in 2 rows, appressed, with narrow 

 membranaceous margins. Receptacle conical or hemispherical, naked. Achc- 

 nia flat, obovate or inversely heart-shaped, margined with a callous wing, or in 

 the ray 3-winged, crowned with a pappus of several minute bristles and fre 

 quently with 2-4 longer awns.— Perennial and bushy-branched smooth hvrhs, 

 pale green, with the aspect of Aster : the thickish leaves chiefly entire. Reacts 

 loosely corymbose or panicled : disk yellow: rays white or purplish. (Dedi- 

 cated to I. Bolton, an English botanist.) See Addend. 



1. B. astei'Oldcs, L'Her. Leaves lanceolate; achenia broadly cval; 

 pappus of few minute bristles and no awns. — Moist places along streams. 

 Pennsylvania (Bartram) and southward along the Alleghanies : rare. Oct.— 

 Plant usually 6° high. 



2. B. giastifolia, L'Her. Leaves lanceolate, ascending, often turned 

 edgewise by a twist ; achenia obovate, broadly winged ; pappus of several short 

 bristles and, especially in the disk, of 2 or 3 short awns. — Rich moist soil, 

 Pennsylvania to Illinois and southward. Sept. — Plant 2° - 4° high. 



17. BELLIS, Tourn. Daisy. 



Heads many-flowered, radiate ; the rays numerous, pistillate. Scales of the 

 involucre herbaceous, equal, in about 2 rows. Receptacle conical, naked. 

 Achenia obovate, flattened, wingless, and without any pappus. — Low herbs 

 (all but one species natives of the Old World), either stemless, like the true 

 Daisy, B. perennis, or leafy-stemmed, as is our species. (The Latin name, 

 from bellus, pretty.) 



I. B. infegrifolia, Michx. (Western Daisy.) Diffusely branched 

 and spreading (4' -9' high), smoothish ; leaves lanceolate or oblong, the lower 

 spatulate-obovate ; heads on slender peduncles ; rays pale violet-purple. © @ 

 — Praiiies and banks, Kentucky and southwestward. March - June. 



18. BKACIIYCHiETA, Torr. & Gr. False Golden-rod. 



Heads and flowers nearly as in Solidago, except the pappus, which is a row 

 of minute rather scale-like bristles shorter than the achenia. — A perennial herb, 

 with rounded or ovate serrate leaves, all the lower ones heart-shaped ; the small 

 yellow heads in sessile clusters racemed or spiked on the branches. (Name com 

 posed of /3payus, short, and x aiTr li bristle, from the pappus.) 



1. B. COl'data, Torr. & Gr. (Solidago cordata, Short.) Wooded hills, 

 E. Kentucky and southward. Oct. — Plant 2° -4° high, slender, more or less 

 pubescent. 



19. SOLIDAGO, L. Golden-rod. 



Heads few - many-flowered, radiate; the rays 1 to 16, pistillate Scales of 

 the oblong involucre appressed, destitute of herbaceous tips (except No. 1). 

 Receptacle small, not chaffy Achenia many-iibbed, nearly terete. Pappus 



