Asteraceae - Aster Family, Composites (110) go to check list index
     HHelianthus  - sunflower
         H.  giganteus  L. - swamp sunflower, introduced
         H.  tuberosus  L. - Jerusalem artichoke
         H. x laetiflorus  Pers.
         Bidens  - beggar-ticks, bur-marigold
          HB. beckii  Torr. - water-marigold, water beggar's-ticks
        AB. cernua  L. - nodding bur-marigold
        AB. frondosa  L. - common beggar's-ticks
      Anthemis
         HA. tinctoria  L. - yellow chamomile, introduced
         AA. cotula  L. - stinking Mayweed, introduced
     HRudbeckia
         R. laciniata  L. var. hortensis  Bailey - golden glow, coneflower, introduced
         R. hirta  Nutt. - black-eyed Susan, introduced
     HChrysanthemum
         C. parthenium  (L.) Bernh. - feverfew, introduced
         C. leucanthemum  L. - ox-eye daisy, introduced
   HTussilago go to check list index
         T. farfara  L. - coltsfoot, introduced
        Senecio  - groundsel
       AS. viscosus  L. - clammy groundsel, introduced
       AS. vulgarisL. - common groundsel, introduced
       AS. jacobaeaL. - tansy ragwort, stinking Willie, introduced
          HS. robbinsii Oakes - swamp-ragwort
     HEuthamia
         E. graminifolia  (L.) Nutt. - narrow-leaved goldenrod
     HSolidago  - goldenrod
         S. puberula  Nutt. - dusty goldenrod
         S. uliginosa  Nutt. - bog-goldenrod
         S. bicolor  L. - white goldenrod, silver-rod
         S. canadensis  L. - three-ribbed goldenrod
         S. flexicaulis  L. - wood goldenrod
         S. sempervirens  L. - seaside goldenrod
         S. juncea  Ait. - early goldenrod
         S. rugosa  Ait. - rough goldenrod
         S. gigantea  Ait. - smooth goldenrod
   AGalinsoga go to check list index
         G. quadriradiata  Ruíz & Pavón - common quickweed, introduced
     HAchillea  - yarrow
         A. ptarmica  L. - sneezeweed, introduced
         A. millefolium  L. - yarrow, milfoil, introduced
     AMatricaria - wild chamomile
         M. matricarioides  (Less.) Porter. - pineapple-weed, introduced
         M. maritima  L. - Mayweed, scentless chamomile, introduced
     HPetasites  - sweet coltsfoot
         P. frigidus  (L.) Fries.
     AConyza
         C. canadensis  (L.) Cronq. - horseweed
         Erigeron  - fleabane
          HE. philadelphicus  L. - Philadelphia daisy, introduced
     AE. annuus  (L.) Pers. - daisy fleabane, introduced
     AE. strigosus  Muhl. - rough fleabane, introduced
    HAster  - aster go to check list index
         A. macrophyllus  L. - large-leaved aster
         A. ciliolatus  Lindl. - northern heart-leaved aster
         A. cordifolius  L. - heart-leaved aster
         A. acuminatus  Michx. - wood aster
         A. x blakei  (T.C. Porter) House - hybrid between wood aster and bog aster
         A. nemoralis  Ait. - bog aster
         A. puniceus  L. - rough aster
         A. novi-belgii  L. - New York aster
         A. borealis  (T. & G.) Prov - northern bog aster
         A. umbellatus  P. Mill. - tall white aster
         A. radula  Ait. - low rough aster
         A. lanceolatus  Lindl. - eastern lined aster
         A. lateriflorus  Willd. - goblet aster
     AArctium  - burdock
         A. minus  (Hill.) Bernh. - common burdock, introduced
   AXanthium  - cocklebur go to check list index
         X. strumarium  L. - cocklebur
     AAmbrosia  - ragweed
         A. artemisiifolia  L. - common ragweed
        Carduus  - thistle
     HC. crispus  L. - welted thistle, introduced
        Cirsium  - thistle
     AC. vulgare  (Savi) Tenore - bull thistle, introduced
     AC. muticum  Michx. - swamp thistle
     HC. arvense  (L.) Scop. - Canada thistle, introduced
     HArtemisia  - wormwood
         A. vulgaris  L. - common wormwood, mugwort, introduced
     HCotula
           [C. coronopifolia  L. - brass buttons, introduced]
     HTanacetum
         T. vulgare  L. - tansy, introduced
     AErechtites
         E. hieracifolia  (L.) Raf. - fireweed
AGnaphalium - cudweed go to check list index
         G. uliginosum  L. - low cudweed, introduced
         G. slyvaticum  L. - woodland cudweed
     HAntennaria
         A. neglecta  Greene - pussy's-toes, everlasting
     HAnaphalis  - pearly everlasting
         A. margaritacea  (L.) Benth. & Hook. - pearly everlasting
     HEupatorium
         E. maculatum  L. - Joe-pye-weed
         E. perfoliatum  L. - boneset, thoroughwort
     HTaraxacum
         T. officinale  Weber - dandelion, introduced
     HPrenanthes  - white lettuce
         P. altissima  L. - tall white lettuce
         P. trifoliolata  (Cass.) Fern. - lion's-paw
     HHieracium  - hawkweeds
         H. pilosella  L. - mouse-eared hawkweed, introduced
         H. aurantiacum  L. - orange hawkweed, devil's paintbrush, introduced
         H. floribundum  Wimm. & Grab. - king devil, yellow hawkweed, introduced
         H. lachenalii  C. Gmelin. - European hawkweed, introduced
         H. scabrum  Michx. - rough hawkweed
       Crepis - hawk's beard
       AC. tectorum L.
Sonchus  - sow-thistle go to check list index
        HS. arvensis  L. - perennial sow-thistle, introduced
      AS. oleraceusL. - annual sow-thistle, introduced
      AS. asper  (L.) Hill. - spiny sow-thistle, introduced
     ALactuca  - lettuce
         L. biennis  (Moench) Fern. - wild lettuce
     HCichorium
         C. intybus  L. - chicory, blue sailors, introduced
     ALapsana
         L. communis  L. - nipplewort, introduced
     ATragopogon
         T. pratensis  L. - goats-beard, introduced
     HLeontodon
         L. autumnalis  L. - fall-dandelion, introduced
                    var. autumnalis  L.
                    var. pratensis  (Less.) Koch