200 COMPOSITE. (COMPOSITE FAMILY.) 



16. BOL.T6NIA, L'llei. BOLTONIA. 



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

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

 rncmbranareous margins. Receptacle conical or hemispherical, naked. Ache- 

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

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

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

 :-"en, with the aspect of Aster : the thickish leaves chiefly entire. II. :;'< 

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

 cated to /. Bollon, an English botanist.) See Addeiid. 



1. B. asteroides, L'Hcr. Leaves lanceolate; achenia broadly cval ; 

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

 Transylvania (/MI ft ram) and southward along the Alleghanies : rare. Out. 

 riant usually 6 high. 



2. 15. glastifolia, L'Her. Leaves lanceolate, ascending, often turned 

 edgi'wisc 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. B ELLIS, 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 

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

 from bellus, pretty.) 



1. B. integrifolia, Michx. (WESTERN DAISY.) Diffusely branched 

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

 spatulatc-obovatc; heads on slender peduncles ; rays pale violet-purple. @ 

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



18. BKAIIl r riI/ETA, 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- 

 peted of ftpaxvs, short, and \alrri, bristle, from the pappus.) 



1. B. COrdata, 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. 



I It ads 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 



