| Achillea | Achillea filipendulina Lam. | fernleaf yarrow | ME | VT | ||||
| Achillea millefolium L. | common yarrow | ME | NH | VT | MA | CT | RI | |
| Achillea ptarmica L. | sneezeweed | ME | NH | VT | MA | CT | ||
| Ageratina | Ageratina altissima (L.) King & H.E. Robins. | white snakeroot | ME | NH | VT | MA | CT | RI |
| Ageratina aromatica (L.) Spach | lesser snakeroot | ME | VT | MA | CT | RI | ||
| Ageratum | Ageratum houstonianum P. Mill. | bluemink | MA | CT | ||||
| Ambrosia | Ambrosia artemisiifolia L. | annual ragweed | ME | NH | VT | MA | CT | RI |
| Ambrosia bidentata Michx. | lanceleaf ragweed | ME | VT | CT | ||||
| Ambrosia psilostachya DC. | Cuman ragweed | ME | NH | VT | MA | CT | ||
| Ambrosia trifida L. | great ragweed | ME | NH | VT | MA | CT | RI | |
| Anaphalis | Anaphalis margaritacea (L.) Benth. & Hook. f. | western pearlyeverlasting | ME | NH | VT | MA | CT | RI |
| Antennaria | Antennaria howellii Greene ssp. canadensis (Greene) Bayer | Canadian pussytoes | ME | NH | VT | MA | CT | RI |
| Antennaria howellii Greene ssp. neodioica (Greene) Bayer | field pussytoes | ME | NH | VT | MA | CT | RI | |
| Antennaria neglecta Greene | field pussytoes | ME | NH | VT | MA | CT | RI | |
| Antennaria parlinii Fern. ssp. fallax (Greene) Bayer & Stebbins | Parlin's pussytoes | ME | NH | VT | MA | CT | RI | |
| Antennaria parlinii Fern. ssp. parlinii | Parlin's pussytoes | ME | NH | VT | MA | CT | ||
| Antennaria plantaginifolia (L.) Richards. | woman's tobacco | ME | NH | VT | MA | CT | RI | |
| Anthemis | Anthemis arvensis L. | corn chamomile | ME | NH | VT | MA | CT | RI |
| Anthemis cotula L. | stinking chamomile | ME | NH | VT | MA | CT | RI | |
| Anthemis tinctoria L. | golden chamomile | ME | NH | VT | MA | CT | ||
| Arctium | Arctium lappa L. | greater burrdock | ME | NH | VT | MA | CT | RI |
| Arctium minus Bernh. | lesser burrdock | ME | NH | VT | MA | CT | RI | |
| Arctium tomentosum P. Mill. | woolly burrdock | ME | NH | VT | MA | CT | ||
| Arnica | Arnica lanceolata Nutt. | lanceleaf arnica | ME | NH | VT | |||
| Artemisia | Artemisia abrotanum L. | southernwood | ME | VT | MA | CT | ||
| Artemisia absinthium L. | absinth sagewort | ME | NH | VT | MA | CT | ||
| Artemisia annua L. | sweet sagewort | ME | NH | VT | MA | CT | ||
| Artemisia biennis Willd. | biennial wormwood | ME | NH | VT | MA | CT | RI | |
| Artemisia campestris L. | field sagewort | ME | NH | VT | MA | CT | RI | |
| Artemisia carruthii Wood ex Carruth. | Carruth's sagewort | ME | VT | RI | ||||
| Artemisia dracunculus L. | wormwood | ME | VT | MA | ||||
| Artemisia filifolia Torr. | sand sagebrush | ME | VT | CT | ||||
| Artemisia frigida Willd. | fringed sagewort | ME | VT | MA | CT | |||
| Artemisia ludoviciana Nutt. | Louisiana sagewort | ME | NH | VT | MA | CT | RI | |
| Artemisia pontica L. | Roman wormwood | ME | NH | VT | MA | CT | RI | |
| Artemisia stelleriana Bess. | dustymiller sagewort | ME | NH | VT | MA | CT | RI | |
| Artemisia tridentata Nutt. | big sagebrush | ME | VT | MA | ||||
| Artemisia vulgaris L. | common wormwood | ME | NH | VT | MA | CT | RI | |
| Aster | Aster borealis (Torr. & Gray) Prov. | rush aster | ME | NH | VT | MA | ||
| Aster ciliolatus Lindl. | Lindley's aster | ME | NH | VT | MA | |||
| Aster concolor L. | eastern silver aster | ME | VT | MA | RI | |||
| Aster cordifolius L. var. laevigatus Porter | common blue wood aster | ME | VT | MA | CT | |||
| Aster divaricatus L. | white wood aster | ME | NH | VT | MA | CT | RI | |
| Aster dumosus L. var. dumosus | rice button aster | ME | NH | VT | MA | CT | RI | |
| Aster ericoides L. | heath aster | ME | NH | VT | MA | CT | RI | |
| Aster laevis L. | smooth aster | ME | NH | VT | MA | CT | RI | |
| Aster lanceolatus Willd. ssp. lanceolatus var. lanceolatus | white panicle aster | ME | NH | VT | MA | CT | RI | |
| Aster lateriflorus (L.) Britt. var. hirsuticaulis (Lindl. ex DC.) Porter | calico aster | ME | NH | VT | MA | |||
| Aster lateriflorus (L.) Britt. var. lateriflorus | farewell summer | ME | NH | VT | MA | CT | RI | |
| Aster macrophyllus L. | bigleaf aster | ME | NH | VT | MA | CT | RI | |
| Aster novae-angliae L. | New England aster | ME | NH | VT | MA | CT | RI | |
| Aster novi-belgii L. var. tardiflorus (L.) A.G. Jones | leafybract aster | ME | NH | VT | ||||
| Aster patens Ait. | late purple aster | ME | NH | VT | MA | CT | RI | |
| Aster pilosus Willd. | white oldfield aster | ME | NH | VT | MA | CT | RI | |
| Aster praealtus Poir. | willowleaf aster | ME | NH | VT | MA | CT | ||
| Aster prenanthoides Muhl. ex Willd. | crookedstem aster | ME | VT | MA | CT | |||
| Aster puniceus L. | purplestem aster | ME | NH | VT | MA | CT | RI | |
| Aster radula Ait. | low rough aster | ME | NH | VT | MA | CT | RI | |
| Aster schreberi Nees | Schreber's aster | ME | NH | VT | MA | CT | RI | |
| Aster spectabilis Ait. | western showy aster | ME | VT | MA | CT | RI | ||
| Aster subulatus Michx. | annual saltmarsh aster | ME | NH | VT | MA | CT | RI | |
| Aster tataricus L. f. | Tatarian aster | ME | VT | MA | CT | RI | ||
| Aster tenuifolius L. | saline aster | ME | NH | VT | MA | CT | RI | |
| Aster umbellatus var. umbellatus P. Mill. | parasol aster | ME | NH | VT | MA | CT | RI | |
| Aster undulatus L. | waxyleaf aster | ME | NH | VT | MA | CT | RI | |
| Aster X blakei (Porter) House (pro sp.) | Blake's aster | ME | NH | VT | MA | RI | ||
| Aster X herveyi Gray (pro sp.) | Hervey's aster | ME | VT | MA | CT | RI | ||
| Baccharis | Baccharis halimifolia L. | eastern baccharis | MA | CT | RI | |||
| Balsamita | Balsamita major Desf. | costmary | ME | NH | VT | MA | CT | RI |
| Bellis | Bellis perennis L. | lawndaisy | ME | NH | VT | MA | CT | |
| Bidens | Bidens aristosa (Michx.) Britt. | bearded beggarticks | ME | NH | VT | MA | CT | |
| Bidens bipinnata L. | spanish-needles | ME | VT | MA | CT | |||
| Bidens cernua L. | nodding beggartick | ME | NH | VT | MA | CT | RI | |
| Bidens coronata (L.) Britt. | crowned beggarticks | ME | VT | MA | CT | RI | ||
| Bidens discoidea (Torr. & Gray) Britt. | small beggarticks | ME | NH | VT | MA | CT | RI | |
| Bidens eatonii Fern. | Eaton's beggarticks | ME | VT | MA | CT | RI | ||
| Bidens frondosa L. | devil's beggartick | ME | NH | VT | MA | CT | RI | |
| Bidens hyperborea Greene | estuary beggarticks | ME | VT | MA | ||||
| Bidens laevis (L.) B.S.P. | smooth beggartick | ME | NH | VT | MA | CT | ||
| Bidens pilosa L. | Spanish needles | ME | VT | MA | CT | |||
| Bidens tripartita L. | threelobe beggarticks | ME | NH | VT | MA | CT | RI | |
| Boltonia | Boltonia asteroides (L.) L'Her. | white doll's daisy | ME | VT | MA | CT | RI | |
| Brachyactis | Brachyactis ciliata (Ledeb.) Ledeb. ssp. laurentiana (Fern.) A.G. Jones | alkali rayless aster | ME | |||||
| Calendula | Calendula officinalis L. | pot marigold | ME | NH | CT | |||
| Callistephus | Callistephus chinensis (L.) Nees | China aster | ME | |||||
| Carduus | Carduus acanthoides L. | spiny plumeless thistle | ME | VT | CT | RI | ||
| Carduus crispus L. | curly plumeless thistle | ME | VT | CT | RI | |||
| Carduus nutans L. | nodding plumeless thistle | ME | NH | VT | MA | CT | RI | |
| Carthamus | Carthamus lanatus L. | woolly distaff thistle | MA | |||||
| Carthamus tinctorius L. | safflower | MA | ||||||
| Centaurea | Centaurea biebersteinii DC. | spotted knapweed | ME | NH | VT | MA | CT | RI |
| Centaurea cyanus L. | garden cornflower | ME | NH | VT | MA | CT | RI | |
| Centaurea diffusa Lam. | white knapweed | ME | VT | MA | CT | |||
| Centaurea jacea L. | brownray knapweed | ME | NH | VT | MA | CT | RI | |
| Centaurea melitensis L. | Maltese star thistle | ME | VT | MA | ||||
| Centaurea montana L. | mountain cornflower | ME | VT | |||||
| Centaurea nigra L. | lesser knapweed | ME | NH | VT | MA | CT | RI | |
| Centaurea nigrescens Willd. | Tyrol knapweed | ME | NH | VT | MA | CT | ||
| Centaurea scabiosa L. | greater knapweed | ME | NH | VT | CT | |||
| Centaurea solstitialis L. | yellow star thistle | ME | NH | VT | MA | |||
| Chrysanthemum | Chrysanthemum coronarium L. | crowndaisy | ME | VT | MA | |||
| Chrysanthemum segetum L. | corndaisy | ME | VT | MA | CT | |||
| Cichorium | Cichorium endivia L. | cultivated endive | ME | VT | CT | |||
| Cichorium intybus L. | chicory | ME | NH | VT | MA | CT | RI | |
| Cirsium | Cirsium arvense (L.) Scop. | Canadian thistle | ME | NH | VT | MA | CT | RI |
| Cirsium discolor (Muhl. ex Willd.) Spreng. | field thistle | ME | NH | VT | MA | CT | RI | |
| Cirsium flodmanii (Rydb.) Arthur | Flodman's thistle | ME | VT | |||||
| Cirsium horridulum Michx. | yellow thistle | ME | VT | MA | CT | RI | ||
| Cirsium muticum Michx. | swamp thistle | ME | NH | VT | MA | CT | RI | |
| Cirsium palustre (L.) Scop. | marsh thistle | ME | VT | MA | ||||
| Cirsium pumilum (Nutt.) Spreng. | pasture thistle | ME | NH | VT | MA | CT | RI | |
| Cirsium vulgare (Savi) Ten. | bull thistle | ME | NH | VT | MA | CT | RI | |
| Cnicus | Cnicus benedictus L. | blessed thistle | MA | CT | ||||
| Conyza | Conyza canadensis (L.) Cronq. | Canadian horseweed | ME | NH | VT | MA | CT | RI |
| Coreopsis | Coreopsis basalis (A. Dietr.) Blake | goldenmane tickseed | ME | VT | CT | |||
| Coreopsis lanceolata L. | lanceleaf tickseed | ME | NH | VT | MA | CT | RI | |
| Coreopsis major Walt. | greater tickseed | ME | VT | MA | ||||
| Coreopsis pubescens Ell. | star tickseed | ME | VT | MA | CT | |||
| Coreopsis rosea Nutt. | pink tickseed | ME | VT | MA | RI | |||
| Coreopsis tinctoria Nutt. | golden tickseed | ME | VT | MA | CT | RI | ||
| Coreopsis tripteris L. | tall tickseed | ME | VT | MA | CT | |||
| Cosmos | Cosmos bipinnatus Cav. | garden cosmos | NH | MA | CT | RI | ||
| Cosmos sulphureus Cav. | sulphur cosmos | CT | ||||||
| Cotula | Cotula coronopifolia L. | common brassbuttons | MA | |||||
| Crepis | Crepis capillaris Wallr. | smooth hawksbeard | ME | NH | VT | MA | CT | RI |
| Crepis foetida L. | stinking hawksbeard | ME | VT | MA | ||||
| Crepis tectorum L. | narrowleaf hawksbeard | ME | VT | MA | ||||
| Crepis vesicaria L. ssp. taraxacifolia (Thuill.) Thellung ex Schinz & R. Keller | ME | VT | CT | |||||
| Crupina | Crupina vulgaris Cass. | common crupina | MA | |||||
| Doellingeria | Doellingeria infirma (Michx.) Greene | MA | CT | |||||
| Doronicum | Doronicum pardalianches L. | great false leopardbane | MA | |||||
| Echinacea | Echinacea pallida (Nutt.) Nutt. | pale purple coneflower | ME | MA | CT | |||
| Echinacea purpurea (L.) Moench | eastern purple coneflower | ME | CT | |||||
| Echinops | Echinops sphaerocephalus L. | great globethistle | ME | NH | VT | MA | CT | |
| Eclipta | Eclipta prostrata (L.) L. | false daisy | MA | |||||
| Erechtites | Erechtites hieraciifolia (L.) Raf. ex DC. | American burnweed | ME | NH | VT | MA | CT | RI |
| Erigeron | Erigeron annuus (L.) Pers. | eastern daisy fleabane | ME | NH | VT | MA | CT | RI |
| Erigeron hyssopifolius Michx. | hyssopleaf fleabane | ME | VT | |||||
| Erigeron philadelphicus L. | Philadelphia fleabane | ME | NH | VT | MA | CT | ||
| Erigeron pulchellus Michx. | robin's plantain | ME | NH | VT | MA | CT | ||
| Erigeron strigosus Muhl. ex Willd. | prairie fleabane | ME | NH | VT | MA | CT | RI | |
| Eupatorium | Eupatorium altissimum L. | tall thoroughwort | ME | VT | MA | CT | ||
| Eupatorium dubium Willd. ex Poir. | coastalplain joepyeweed | ME | NH | VT | MA | CT | RI | |
| Eupatorium fistulosum Barratt | trumpetweed | ME | NH | VT | MA | CT | RI | |
| Eupatorium hyssopifolium L. | hyssopleaf thoroughwort | ME | VT | MA | CT | RI | ||
| Eupatorium leucolepis (DC.) Torr. & Gray | justiceweed | ME | VT | MA | RI | |||
| Eupatorium maculatum L. var. maculatum | spotted joepyeweed | ME | NH | VT | MA | CT | RI | |
| Eupatorium perfoliatum L. | common boneset | ME | NH | VT | MA | CT | RI | |
| Eupatorium purpureum L. var. purpureum | sweetscented joepyeweed | ME | NH | VT | MA | CT | RI | |
| Eupatorium rotundifolium L. | roundleaf thoroughwort | ME | NH | VT | MA | CT | RI | |
| Eupatorium serotinum Michx. | lateflowering thoroughwort | ME | VT | MA | CT | RI | ||
| Eupatorium sessilifolium L. | upland boneset | ME | NH | VT | MA | CT | RI | |
| Euthamia | Euthamia graminifolia (L.) Nutt. var. graminifolia | flattop goldentop | ME | NH | VT | MA | CT | RI |
| Euthamia tenuifolia (Pursh) Nutt. var. tenuifolia | slender goldentop | ME | NH | VT | MA | CT | RI | |
| Flaveria | Flaveria bidentis (L.) Kuntze | coastalplain yellowtops | MA | |||||
| Gaillardia | Gaillardia pulchella Foug. | firewheel | VT | CT | ||||
| Galinsoga | Galinsoga parviflora Cav. | gallantsoldier | ME | NH | VT | MA | CT | RI |
| Galinsoga quadriradiata Ruiz & Pavon | shaggysoldier | ME | NH | VT | MA | CT | RI | |
| Gamochaeta | Gamochaeta purpurea (L.) Cabrera | spoonleaf purple everlasting | ME | MA | CT | RI | ||
| Gnaphalium | Gnaphalium uliginosum L. | marsh cudweed | ME | NH | VT | MA | CT | RI |
| Grindelia | Grindelia squarrosa (Pursh) Dunal | curlycup gumweed | NH | MA | CT | RI | ||
| Guizotia | Guizotia abyssinica (L. f.) Cass. | ramtilla | MA | CT | ||||
| Hasteola | Hasteola suaveolens (L.) Pojark. | MA | CT | RI | ||||
| Helenium | Helenium amarum (Raf.) H. Rock | yellowdicks | ME | VT | MA | CT | ||
| Helenium autumnale L. | common sneezeweed | ME | VT | MA | CT | RI | ||
| Helenium flexuosum Raf. | purplehead sneezeweed | ME | NH | VT | MA | CT | RI | |
| Helianthus | Helianthus annuus L. | common sunflower | ME | NH | VT | MA | CT | RI |
| Helianthus debilis Nutt. | cucumberleaf sunflower | ME | NH | VT | MA | CT | RI | |
| Helianthus decapetalus L. | thinleaf sunflower | ME | NH | VT | MA | CT | RI | |
| Helianthus divaricatus L. | woodland sunflower | ME | NH | VT | MA | CT | RI | |
| Helianthus giganteus L. | giant sunflower | ME | VT | MA | CT | |||
| Helianthus grosseserratus Martens | sawtooth sunflower | ME | NH | VT | MA | CT | ||
| Helianthus maximiliani Schrad. | Maximilian sunflower | ME | VT | MA | CT | |||
| Helianthus mollis Lam. | ashy sunflower | ME | VT | MA | CT | RI | ||
| Helianthus petiolaris Nutt. | prairie sunflower | ME | VT | MA | CT | |||
| Helianthus strumosus L. | paleleaf woodland sunflower | ME | NH | VT | MA | CT | RI | |
| Helianthus tuberosus L. | Jerusalem artichoke | ME | NH | VT | MA | CT | RI | |
| Helianthus X laetiflorus Pers. (pro sp.) | mountain sunflower | ME | NH | VT | MA | CT | RI | |
| Helichrysum | Helichrysum bracteatum (Vent.) Andr. | bracted strawflower | MA | CT | ||||
| Heliopsis | Heliopsis helianthoides (L.) Sweet | sunflower heliopsis | ME | NH | VT | MA | CT | |
| Hemizonia | Hemizonia fasciculata (DC.) Torr. & Gray | clustered tarweed | MA | |||||
| Hieracium | Hieracium aurantiacum L. | orange hawkweed | ME | NH | VT | MA | CT | RI |
| Hieracium caespitosum Dumort. | meadow hawkweed | ME | NH | VT | MA | CT | RI | |
| Hieracium canadense Michx. | Canadian hawkweed | ME | NH | VT | MA | CT | RI | |
| Hieracium gronovii L. | queendevil | ME | VT | MA | CT | RI | ||
| Hieracium lachenalii K.C. Gmel. | common hawkweed | ME | NH | VT | MA | CT | ||
| Hieracium murorum L. | wall hawkweed | ME | NH | VT | MA | CT | ||
| Hieracium paniculatum L. | Allegheny hawkweed | ME | NH | VT | MA | CT | RI | |
| Hieracium pilosella L. | mouseear hawkweed | ME | NH | VT | MA | CT | RI | |
| Hieracium piloselloides Vill. | tall hawkweed | ME | NH | VT | MA | CT | RI | |
| Hieracium praealtum Vill. ex Gochnat | kingdevil | ME | NH | VT | MA | |||
| Hieracium robinsonii (Zahn) Fern. | Robinson's hawkweed | ME | NH | VT | ||||
| Hieracium sabaudum L. | New England hawkweed | ME | VT | MA | CT | |||
| Hieracium scabrum Michx. | rough hawkweed | ME | NH | VT | MA | CT | RI | |
| Hieracium umbellatum L. | narrowleaf hawkweed | ME | NH | VT | ||||
| Hieracium venosum L. | rattlesnakeweed | ME | NH | VT | MA | CT | RI | |
| Hieracium X floribundum Wimmer & Grab. (pro sp.) | hawkweed | ME | NH | VT | MA | CT | RI | |
| Hypochaeris | Hypochaeris glabra L. | smooth catsear | ME | VT | MA | |||
| Hypochaeris radicata L. | hairy catsear | ME | NH | VT | MA | CT | RI | |
| Inula | Inula helenium L. | elecampane inula | ME | NH | VT | MA | CT | RI |
| Ionactis | Ionactis linariifolius (L.) Greene | ionactis | ME | NH | VT | MA | CT | RI |
| Iva | Iva frutescens L. ssp. oraria (Bartlett) R.C. Jackson | Jesuit's bark | ME | NH | VT | MA | CT | RI |
| Iva xanthifolia Nutt. | giant sumpweed | ME | NH | VT | MA | CT | RI | |
| Krigia | Krigia biflora (Walt.) Blake | twoflower dwarfdandelion | ME | VT | CT | |||
| Krigia virginica (L.) Willd. | Virginia dwarfdandelion | ME | NH | VT | MA | CT | RI | |
| Lactuca | Lactuca biennis (Moench) Fern. | tall blue lettuce | ME | NH | VT | MA | CT | RI |
| Lactuca canadensis L. | Canada lettuce | ME | NH | VT | MA | CT | RI | |
| Lactuca floridana (L.) Gaertn. | woodland lettuce | ME | VT | MA | ||||
| Lactuca hirsuta Muhl. ex Nutt. var. sanguinea (Bigelow) Fern. | hairy lettuce | ME | NH | VT | MA | CT | RI | |
| Lactuca serriola L. | prickly lettuce | ME | NH | VT | MA | CT | RI | |
| Lactuca tatarica (L.) C.A. Mey. | blue lettuce | ME | VT | |||||
| Lapsana | Lapsana communis L. | common nipplewort | ME | VT | MA | CT | ||
| Lasthenia | Lasthenia californica DC. ex Lindl. | California goldfields | MA | |||||
| Layia | Layia platyglossa (Fisch. & C.A. Mey.) Gray | coastal tidytips | MA | |||||
| Leontodon | Leontodon autumnalis L. | fall dandelion | ME | NH | VT | MA | CT | RI |
| Leontodon hispidus L. | bristly hawkbit | ME | VT | CT | RI | |||
| Leontodon taraxacoides (Vill.) Merat | lesser hawkbit | ME | VT | MA | CT | |||
| Leucanthemum | Leucanthemum vulgare Lam. | oxeyedaisy | ME | NH | VT | MA | CT | RI |
| Liatris | Liatris pycnostachya Michx. | cattail gayfeather | ME | MA | ||||
| Liatris scariosa (L.) Willd. var. novae-angliae Lunell | New England gayfeather | ME | NH | MA | CT | RI | ||
| Liatris spicata (L.) Willd. | dense gayfeather | ME | MA | CT | ||||
| Madia | Madia glomerata Hook. | mountain tarweed | ME | VT | CT | |||
| Madia sativa Molina | coast tarweed | ME | VT | MA | CT | |||
| Matricaria | Matricaria discoidea DC. | disc mayweed | ME | NH | VT | MA | CT | RI |
| Matricaria recutita L. | mayweed | ME | VT | MA | CT | RI | ||
| Megalodonta | Megalodonta beckii (Torr. ex Spreng.) Greene var. beckii | Beck's watermarigold | ME | NH | VT | MA | CT | RI |
| Microseris | Microseris douglasii (DC.) Schultz-Bip. | Douglas' silverpuffs | MA | |||||
| Mikania | Mikania scandens (L.) Willd. | climbing hempvine | ME | NH | MA | CT | RI | |
| Mycelis | Mycelis muralis (L.) Dumort. | walllettuce | ME | NH | ||||
| Oclemena | Oclemena acuminata (Michx.) Greene | ME | NH | VT | MA | CT | RI | |
| Oclemena nemoralis (Ait.) Greene | ME | NH | VT | MA | CT | RI | ||
| Oligoneuron | Oligoneuron album (Nutt.) Nesom | NH | VT | MA | CT | |||
| Oligoneuron rigidum (L.) Small var. rigidum | VT | MA | CT | RI | ||||
| Omalotheca | Omalotheca supina (L.) DC. | alpine arctic cudweed | ME | NH | VT | |||
| Omalotheca sylvatica (L.) Schultz-Bip. & F.W. Schultz | woodland arctic cudweed | ME | NH | VT | ||||
| Onopordum | Onopordum acanthium L. | Scotch cottonthistle | VT | MA | CT | RI | ||
| Palafoxia | Palafoxia texana DC. | Texas palafox | MA | |||||
| Parthenium | Parthenium hysterophorus L. | Santa Maria feverfew | MA | CT | ||||
| Parthenium integrifolium L. | wild quinine | MA | CT | |||||
| Petasites | Petasites frigidus (L.) Fries var. palmatus (Ait.) Cronq. | Arctic sweet coltsfoot | ME | NH | VT | MA | CT | |
| Petasites hybridus (L.) P.G. Gaertn., B. Mey. & Scherb. | pestilence wort | ME | VT | MA | CT | |||
| Picris | Picris echioides L. | bristly oxtongue | ME | VT | MA | CT | ||
| Picris hieracioides L. | hawkweed oxtongue | ME | VT | MA | CT | |||
| Pityopsis | Pityopsis falcata (Pursh) Nutt. | sickleleaf silkgrass | MA | CT | RI | |||
| Pluchea | Pluchea odorata (L.) Cass. var. succulenta (Fern.) Cronq. | sweetscent | MA | CT | RI | |||
| Polymnia | Polymnia canadensis L. | whiteflower leafcup | VT | CT | ||||
| Prenanthes | Prenanthes alba L. | white rattlesnakeroot | ME | NH | VT | MA | CT | |
| Prenanthes altissima L. | tall rattlesnakeroot | ME | NH | VT | MA | CT | RI | |
| Prenanthes boottii (DC.) Gray | alpine rattlesnakeroot | ME | NH | VT | ||||
| Prenanthes racemosa Michx. | purple rattlesnakeroot | ME | VT | |||||
| Prenanthes serpentaria Pursh | cankerweed | ME | NH | VT | MA | CT | RI | |
| Prenanthes trifoliolata (Cass.) Fern. | gall of the earth | ME | NH | VT | MA | CT | RI | |
| Pseudognaphalium | Pseudognaphalium helleri (Britt.) A. Anderb. ssp. helleri | ME | NH | VT | MA | |||
| Pseudognaphalium obtusifolium (L.) Hilliard & Burtt ssp. obtusifolium | ME | NH | VT | MA | CT | RI | ||
| Pseudognaphalium viscosum (Kunth) W.A. Weber | ME | NH | VT | MA | CT | |||
| Ratibida | Ratibida pinnata (Vent.) Barnh. | pinnate prairie coneflower | VT | MA | CT | |||
| Rudbeckia | Rudbeckia hirta L. | blackeyed Susan | ME | NH | VT | MA | CT | RI |
| Rudbeckia laciniata L. | cutleaf coneflower | ME | NH | VT | MA | CT | ||
| Rudbeckia triloba L. | browneyed Susan | ME | VT | MA | CT | |||
| Sclerolepis | Sclerolepis uniflora (Walt.) B.S.P. | pink bogbutton | NH | MA | RI | |||
| Senecio | Senecio aureus L. | golden ragwort | ME | NH | VT | MA | CT | RI |
| Senecio jacobaea L. | stinking willie | ME | VT | MA | ||||
| Senecio obovatus Muhl. ex Willd. | roundleaf ragwort | ME | VT | MA | CT | |||
| Senecio pauperculus Michx. | balsam groundsel | ME | NH | VT | MA | CT | ||
| Senecio schweinitzianus Nutt. | Schweinitz's ragwort | ME | NH | VT | ||||
| Senecio sylvaticus L. | woodland ragwort | ME | VT | |||||
| Senecio viscosus L. | sticky ragwort | ME | NH | VT | MA | CT | RI | |
| Senecio vulgaris L. | common groundsel | ME | NH | VT | MA | CT | RI | |
| Sericocarpus | Sericocarpus asteroides (L.) B.S.P. | ME | NH | VT | MA | CT | RI | |
| Sericocarpus linifolius (L.) B.S.P. | ME | NH | VT | MA | CT | RI | ||
| Silphium | Silphium perfoliatum L. | cup plant | ME | VT | MA | CT | ||
| Silybum | Silybum marianum (L.) Gaertn. | blessed milkthistle | NH | CT | ||||
| Solidago | Solidago arguta Ait. | Atlantic goldenrod | ME | NH | VT | MA | CT | RI |
| Solidago bicolor L. | white goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago caesia L. | wreath goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago calcicola Fern. | limestone goldenrod | ME | NH | VT | ||||
| Solidago canadensis L. | Canada goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago flexicaulis L. | zigzag goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago gigantea Ait. | giant goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago hispida Muhl. ex Willd. | hairy goldenrod | ME | NH | VT | MA | CT | ||
| Solidago juncea Ait. | early goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago latissimifolia P. Mill. | Elliott's goldenrod | ME | VT | MA | CT | RI | ||
| Solidago macrophylla Pursh | largeleaf goldenrod | ME | NH | VT | MA | |||
| Solidago multiradiata Ait. var. arctica (DC.) Fern. | arctic mountain goldenrod | ME | NH | VT | ||||
| Solidago nemoralis Ait. | Dyersweed goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago odora Ait. | anisescented goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago patula Muhl. ex Willd. | roundleaf goldenrod | ME | NH | VT | MA | CT | ||
| Solidago petiolaris Ait. | downy ragged goldenrod | ME | NH | VT | MA | CT | ||
| Solidago puberula Nutt. | downy goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago rugosa P. Mill. | wrinkleleaf goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago sempervirens L. | seaside goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago simplex (Porter) Kartesz & Gandhi ssp. randii var. randii | Rand's goldenrod | ME | NH | VT | ||||
| Solidago speciosa Nutt. | showy goldenrod | ME | VT | MA | CT | RI | ||
| Solidago uliginosa Nutt. | bog goldenrod | ME | NH | VT | MA | CT | RI | |
| Solidago ulmifolia Muhl. ex Willd. | elmleaf goldenrod | ME | NH | VT | MA | CT | RI | |
| Sonchus | Sonchus arvensis L. | field sowthistle | ME | NH | VT | MA | CT | RI |
| Sonchus asper (L.) Hill | spiny sowthistle | ME | NH | VT | MA | CT | RI | |
| Sonchus oleraceus L. | common sowthistle | ME | NH | VT | MA | CT | RI | |
| Tagetes | Tagetes erecta L. | Aztec marigold | CT | |||||
| Tagetes minuta L. | muster John Henry | MA | ||||||
| Tanacetum | Tanacetum bipinnatum (L.) Schultz-Bip. | Lake Huron tansy | ME | VT | ||||
| Tanacetum parthenium (L.) Schultz-Bip. | feverfew | ME | NH | VT | MA | CT | RI | |
| Tanacetum vulgare L. | common tansy | ME | NH | VT | MA | CT | RI | |
| Taraxacum | Taraxacum laevigatum (Willd.) DC. | rock dandelion | ME | NH | VT | MA | CT | RI |
| Taraxacum officinale G.H. Weber ex Wiggers | common dandelion | ME | NH | VT | MA | CT | RI | |
| Taraxacum officinale ssp. ceratophorum (Ledeb.) Schinz ex Thellung | fleshy dandelion | ME | VT | MA | ||||
| Tetragonotheca | Tetragonotheca helianthoides L. | pineland nerveray | MA | |||||
| Tragopogon | Tragopogon dubius Scop. | yellow salsify | ME | NH | VT | MA | CT | RI |
| Tragopogon porrifolius L. | salsify | ME | NH | VT | MA | CT | ||
| Tragopogon pratensis L. | meadow salsify | ME | NH | VT | MA | CT | RI | |
| Trimorpha | Trimorpha acris (L.) Nesom | bitter boreal daisy | ME | |||||
| Tripleurospermum | Tripleurospermum maritima (L.) W.D.J. Koch ssp. maritima | ME | NH | MA | CT | |||
| Tussilago | Tussilago farfara L. | coltsfoot | ME | NH | VT | MA | CT | RI |
| Verbesina | Verbesina encelioides (Cav.) Benth. & Hook. f. ex Gray ssp. exauriculata (Robins. & Greenm.) J.R. Coleman | golden crownbeard | MA | |||||
| Vernonia | Vernonia fasciculata Michx. | prairie ironweed | MA | |||||
| Vernonia missurica Raf. | Missouri ironweed | MA | ||||||
| Vernonia noveboracensis (L.) Michx. | New York ironweed | NH | MA | CT | RI | |||
| Xanthium | Xanthium spinosum L. | spiny cockleburr | ME | NH | VT | MA | CT | RI |
| Xanthium strumarium L. | rough cockleburr | ME | NH | VT | MA | CT | RI | |
| Zinnia | Zinnia violacea Cav. | elegant zinnia | CT |
Last Update: 1/4/97
Name: Ray Phillips
Email: rbphilli@Colby.edu