( 17 ) 



13. AMBROSIA, Tourn. 



1. trifida, L. 



2. artemisiaefolia, L. 



14. XANTHIUM, Tourn. 



1. strumarium, L. Clotbur. 



2. spinosum, L. Plainfield, Porter. 



15. RUDBECKIA, L. 



1. laciniata, L. 



2. hirta, L. Grassland. 



16. HELIANTHTJS, L. Sunflower. 



1. giganteus, L. 



2. strumosus, L. 



3. divaricatus, L. 



4. decapetalus, L. 



5. tuberosus, L. Jerusalem: Artichoke. Northampton meadows. 



17. COREOPSIS, L. 



tinctoria, Xutt, Roadsides, sparingly. 



18. BID ENS, L. Bur-Marigold. 



1. frondosa, L. 



2. connata, Muhl. 



3. chrysanthemoides, Michx. 



19. MARUTA, Cass. 

 Co tula, DC. Mat-weed. Roadsides. 



millefolium, L. Yarrow. 



21. LEUCANTHEMUM, Tourn. 

 vulgare, Lam. Ox-eye Daisy. 



22. TANACETUM, L. 

 vulgare, L. Tansy. 



23. PYRETHRUM, DC. 



Tanacetum, DC. Costmary. Roadsides, rare. 



24. ARTEMISIA, L. Wormwood. 



1. Canadensis, Michx. Sugar Loaf. 



2. vulgaris, L. Mugwort. Roadsides, &c. 



25. GNAPHALIUM, L. Cudweed. 



1. decurrens, Ives. 



2. polycepnalum, Michx. Sweet Everlasting. 



3. uliginosum, L. 



3 



