200 COMPOSITE. (COMPOSITE FAMILY.) 



16. BOLTOIVIA, L'Hci. BOLTONIA. 



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

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

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

 nia flat, ohovate or inversely heart-shaped, margined with a callous wing, or ID 

 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 herbs, 

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

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

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



1. B. astei'OldcS, L'Her. Leaves lanceolate; achenia broadly oval; 

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

 Pennsylvania (Bart rain] and southward along the Allcghanies : rare. Oct. 

 Plant usually 6 high. 



2. B. glastifolia, L'Her. Leaves lanceolate, ascending, often turnel 

 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. B ELLIS, Toura. DAISY. 



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

 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 tiae 

 Daisy, B. percnnis, or leafy-stemmed, as is our species. (The Latin naiue, 

 from bellus, pretty.) 



1. B. ifitegrifolia, Michx. (WESTERN DAISY.) Diffusely brancUeJ 

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

 spatulatc-obovatc ; heads on slender peduncles ; rays pale violet-purple. Q q) 

 Prairies and banks, Kentucky and south westward. March -June. 



18. BRACHYCII.ETA, Torr. & Gr. FALSE GOLDKN-I..JD. 



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 borb, 

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

 yellow heads in sessile clusters raccmcd or spiked on the branches. (Name cjm 

 posed of ftpaxus, short, and x ai ' T7 ?> 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 Irss 

 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-ribbed, nearly terete. PappuJ 



