COMPOSITE. (COMPOSITE FAMILY.) 253 



18. BRACHYCHJETA, Torr. & Gray. 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 achene. 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 

 composed of fipaxvs* short, and x a * T7 ?> bristle, from the pappus.) 



1. B. COrdata, Torr. & Gray. Wooded hills, S. Ind. and E. Ky. to 

 N Ga. Oct. Plant 2-4 high, slender, more or less pubescent. 



19. BELL IS, Tourn. DAISY. 



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

 volucre herbaceous, equal, in about 2 rows. Receptacle conical, naked. Achenes 

 obovate, flattened, wingless, and without any pappus. Low herbs (all but our 

 single species -natives of the Old World), either stemless, like the true Daisy, 

 B. PERENNIS (which is found as an occasional escape from cultivation), or 

 leafy-stemmed, as is the following. (The Latin name, from bellus, pretty.) 



1. B. integrifolia, Michx. (WESTERN DAISY.) Annual or biennial, 

 diffusely branched (4'-l high), smoothish ; leaves lanceolate or oblong, the 

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

 Prairies and banks, Ky. and southwestward. March -June. 



20. APHANOSTEPHUS, DC. 



Involucral scales in few series, broadly lanceolate, the outer shorter. 

 Acheues prismatic, the broad truncate apex bearing a short coroniform pap- 

 pus. Otherwise as Bellis. Southwestern leafy -stemmed and branching pu- 

 bescent herbs, with solitary terminal daisy-like heads. ('A^a^s, inconspicuous, 

 and <TT0os, crown ; in allusion to the pappus.) 



1. A. Arkansanus, Gray. Diffuse, 1 high; leaves oblong-spatulate to 

 broadly lanceolate, the lower often toothed or lobed ; rays white to purple, ' 

 long; pappus mostly 4-5-lobed. Plains of Kan. and southward. 



21. CH^EJTOPAPPA, DC. 



Heads several-flowered, radiate ; disk-flowers often sterile. Involucral bracts 

 imbricated in 2 or more rows, the outer shorter. Receptacle flat, naked. 

 Achenes fusiform or compressed ; pappus of 5 or fewer thin nerveless paleae, 

 alternating with rough bristly awns, or these wanting. Low southwestern 

 branching annuals, with narrow entire leaves and solitary terminal heads ; ray 

 white or purple. (Xotrr;, a bristle, and TraTnros, pappus.) 



1. C. asteroides, DC. Slender, 2-10' high, pubescent; involucres nar- 

 row, 2" long; rays 5-12; achenes pubescent. Dry grounds, Vernon Co., 

 Mo., and southward. 



22. BOLTONIA, L'Her. 



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

 hemispherical involucre imbricated somewhat in 2 rows, appressed, with nar- 

 row membranaceous margins. Receptacle conical or hemispherical, naked. 

 Achenes very flat, obovate or inversely heart-shaped, margined with a callous 



