126 
Leucanthe- 
zaum. 
Cotula. 
POLYGAMIA, SUPERFLUA. 
terminal segments lanceolate ; peduncles subum- 
bellate, thickish.— Willd. and Pursh. 
Golden-flowered Groundsel. 
A very ornamental plant, bearing a profusion of fine brilliant 
yellow flowers. Every where on the margins of water-courses, 
common. From a foot to three feet high. It improves much by 
cultivation, as I have found by experiment. Perennial. June, 
July. 
320. CHRYSANTHEMUM. Gen. pl. 1307. ( Corymbifere.) 
Calix hemispherical, imbricated; innermost 
scales scariose. Receptacle naked. Pap- 
pus none. 
1. C. leaves amplexicaule, lanceolate, serrated ; 
base cut-dentate; stem erect, branched.— Willd. 
Icon. Fl. Dan. 994. Engi. Bot. 601. 
Ox-eye Daisy. White-weed. Richardson’s Clover. 
About a foot or fifteen inches high. Flowers large, white. 
This is an introduced plant, which has become a pestiferous 
weed to our farmers all through the country. In cultivated 
fields, grassy lawns, and on road- sides, every where in profu- 
sion. It is impossible to extirpate it. Perennial. June, July. 
321. ANTHEMIS. Gen. pl. 1312. (Corymbifere.) 
Calix sper ge. thr subequal. Rays more 
than 5. Receptacle paleaceous; palex flat, 
with rigid acuminated points. Pappus 
none or marginal.—.WVutt. 
1. A. receptacle conical, its scales bristle-shaped ; 
seeds naked; leaves doubly pinnatifid, some- 
what smooth.—Smith. 
A. arvensis, Pursh, not L. and others. 
Icon. Bart. Veg. Mat. Med. U.S. vol. 1. t. 14, 

