COMPOSITAE (THISTLE FAMILY) 



3 a Plant with fetid odor, sparingly hairy 



MAYWEED. (A. cotula.) 

 b Plant not with fetid odor, densely hairy 



CORN CAMOMILE. (A. arvensis.) 



50 CHRYSANTHEMUM. 



1 a Leaves deeply divided to the midrib or nearly so.... 2 

 b Leaves merely toothed or lobed, but not deeply lobed 



as in a 7 



2 a Flowers borne in corymbs 3 



b Flowers borne singly at the ends of the branches or 



stems 4 



3 a Stem grooved or angled; plant 1-3 ft. high 



FEVERFEW. (C. parthtnium.) 

 b Stem not grooved or angled; plant %-i ft. high 



GOLDEN FEATHER. (C. praedltum*) 



4 a Disk flowers dark purple 



KEELED CHRYSANTHEMUM. (C. carinatum*) 

 b Disk flowers yellow 5 



5 a Plant not usually branched; ray flowers never wholly 



yellow PYRETHRUM. (C. coccineum*) 



b Plants branched; ray flowers yellow or white 6 



6 a Plant cultivated in gardens, not shrubby at base 



SUMMER CHRYSANTHEMUM. (C. coronarium*) 

 b Plant cultivated in pots and greenhouses; shrubby at 

 base MARGUERITE. (C. frutescens.*) 



7 a Foliage glaucous; ray flowers golden yellow 



CORN MARIGOLD. (C. segetum*) 

 b Foliage not glaucous; ray flowers variously colored, 



often numerous 



8 a Ray flowers in several rows, numerous, variously 



colored ; disk flowers few or wanting 



COMMON CHRYSANTHEMUM. (C. hybridum*) 

 b Ray flowers in i or 2 rows, white; disk flowers more 



numerous than ray flowers 9 



9 a Plant not cultivated WHITE DAISY. (C. leucdnthemum.) 



b Plants cultivated in gardens and greenhouses 10 



10 a Leaves sessile, usually hairy or rough 



GIANT DAISY. (C. uliginbsum*) 

 b Lower leaves usually petioled 



LARGE-FLOWERED CHRYSANTHEMUM. (C. maximum*) 



51 MATRICARIA. 



i a Ray flowers 10-20; plant aromatic 



WILD CAMOMILE. (M. chamomilla.) 

 b Ray flowers 20-30; plant not aromatic 



SCENTLESS CAMOMILE. (M. inodbra.) 



52 TANACfcTUM TANSY. (T. vulgare.) 



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