| Abies balsamea
|
Abies magnifica
|
Abutilon theophrasti
|
Acalypha australis
|
Acalypha gracilens
|
Acalypha rhomboidea
|
| Acalypha virginica
|
Acanthospermum australe
|
Acanthospermum hispidum
|
Acanthospermum humile
|
Acer campestre
|
Acer ginnala
|
| Acer negundo var. negundo
|
Acer negundo var. violaceum
|
Acer nigrum
|
Acer palmatum
|
Acer pensylvanicum
|
Acer platanoides
|
| Acer pseudoplatanus
|
Acer rubrum var. rubrum
|
Acer rubrum var. trilobum
|
Acer saccharinum
|
Acer saccharum var. saccharum
|
Acer spicatum
|
| Acer x freemanii
|
Achillea ageratum
|
Achillea filipendulina
|
Achillea millefolium var. millefolium
|
Achillea millefolium var. nigrescens
|
Achillea millefolium var. occidentalis
|
| Achillea nobilis
|
Achillea ptarmica
|
Acinos arvensis
|
Aconitum napellus
|
Aconitum noveboracense
|
Acorus americanus
|
| Acorus calamus
|
Actaea pachypoda
|
Actaea rubra
|
Actaea x ludovici
|
Actinidia polygama
|
Adiantum pedatum
|
| Adlumia fungosa
|
Adonis aestivalis
|
Adonis vernalis
|
Adoxa moschatellina
|
Aegilops crassa
|
Aegilops cylindrica
|
| Aegilops geniculata
|
Aegilops triuncialis
|
Aegopodium podagraria
|
Aesculus glabra
|
Aesculus hippocastanum
|
Aethusa cynapium
|
| Agalinis acuta
|
Agalinis fasciculata
|
Agalinis maritima var. maritima
|
Agalinis paupercula var. borealis
|
Agalinis paupercula var. paupercula
|
Agalinis purpurea
|
| Agalinis setacea
|
Agalinis tenuifolia var. macrophylla
|
Agalinis tenuifolia var. parviflora
|
Agalinis tenuifolia var. tenuifolia
|
Agastache foeniculum
|
Agastache nepetoides
|
| Agastache scrophulariifolia
|
Ageratina altissima var. altissima
|
Ageratina aromatica var. aromatica
|
Agrimonia eupatoria
|
Agrimonia gryposepala
|
Agrimonia parviflora
|
| Agrimonia pubescens
|
Agrimonia rostellata
|
Agrimonia striata
|
Agropyron cristatum ssp. pectinatum
|
Agropyron desertorum
|
Agrostemma githago
|
| Agrostis canina
|
Agrostis capillaris
|
Agrostis gigantea
|
Agrostis hyemalis
|
Agrostis mertensii
|
Agrostis perennans
|
| Agrostis scabra
|
Agrostis stolonifera
|
Ailanthus altissima
|
Aira caryophyllea
|
Aira praecox
|
Ajuga genevensis
|
| Ajuga reptans
|
Akebia quinata
|
Albizia julibrissin
|
Alcea rosea
|
Alchemilla monticola
|
Aletris farinosa
|
| Alisma gramineum
|
Alisma subcordatum
|
Alisma triviale
|
Alliaria petiolata
|
Allium ampeloprasum var. ampeloprasum
|
Allium canadense var. canadense
|
| Allium cepa
|
Allium cernuum var. cernuum
|
Allium neapolitanum
|
Allium oleraceum
|
Allium paniculatum var. paniculatum
|
Allium porrum
|
| Allium sativum var. sativum
|
Allium schoenoprasum
|
Allium sphaerocephalum
|
Allium tricoccum var. burdickii
|
Allium tricoccum var. tricoccum
|
Allium vineale
|
| Alnus glutinosa
|
Alnus incana ssp. rugosa
|
Alnus serrulata
|
Alnus viridis ssp. crispa
|
Alnus x fallacina
|
Alopecurus aequalis var. aequalis
|
| Alopecurus carolinianus
|
Alopecurus geniculatus
|
Alopecurus myosuroides
|
Alopecurus pratensis
|
Alternanthera pungens
|
Althaea hirsuta
|
| Althaea officinalis
|
Alyssum alyssoides
|
Alyssum murale
|
Amaranthus albus
|
Amaranthus blitoides
|
Amaranthus blitum
|
| Amaranthus cannabinus
|
Amaranthus caudatus
|
Amaranthus crispus
|
Amaranthus cruentus
|
Amaranthus deflexus
|
Amaranthus hybridus
|
| Amaranthus hypochondriacus
|
Amaranthus palmeri
|
Amaranthus powellii
|
Amaranthus pumilus
|
Amaranthus retroflexus
|
Amaranthus rudis
|
| Amaranthus spinosus
|
Amaranthus tuberculatus
|
Amaranthus viridis
|
Ambrosia artemisiifolia
|
Ambrosia bidentata
|
Ambrosia psilostachya
|
| Ambrosia trifida var. trifida
|
Ambrosia x helenae
|
Amelanchier amabilis
|
Amelanchier arborea var. arborea
|
Amelanchier bartramiana
|
Amelanchier canadensis
|
| Amelanchier humilis
|
Amelanchier humilis x laevis
|
Amelanchier interior
|
Amelanchier intermedia
|
Amelanchier laevis
|
Amelanchier nantucketensis
|
| Amelanchier sanguinea
|
Amelanchier spicata
|
Amerorchis rotundifolia
|
Amianthium muscitoxicum
|
Ammophila breviligulata ssp. breviligulata
|
Ammophila breviligulata ssp. champlainensis
|
| Amorpha fruticosa
|
Ampelopsis brevipedunculata
|
Amphicarpaea bracteata
|
Amphicarpum purshii
|
Amsinckia intermedia
|
Amsinckia lycopsoides
|
| Amsonia illustris
|
Amsonia tabernaemontana var. salicifolia
|
Amsonia tabernaemontana var. tabernaemontana
|
Anagallis arvensis
|
Anagallis minima
|
Anaphalis margaritacea
|
| Anchusa arvensis
|
Anchusa azurea
|
Anchusa officinalis
|
Andromeda polifolia var. glaucophylla
|
Andropogon gerardii
|
Andropogon glomeratus
|
| Andropogon virginicus
|
Androsace maxima
|
Anemone canadensis
|
Anemone cylindrica
|
Anemone multifida var. hudsoniana
|
Anemone quinquefolia var. quinquefolia
|
| Anemone virginiana var. alba
|
Anemone virginiana var. cylindroidea
|
Anemone virginiana var. virginiana
|
Anethum graveolens
|
Angelica atropurpurea
|
Angelica lucida
|
| Angelica venenosa
|
Anoda cristata
|
Antennaria howellii ssp. canadensis
|
Antennaria howellii ssp. neodioica
|
Antennaria howellii ssp. petaloidea
|
Antennaria neglecta
|
| Antennaria parlinii ssp. fallax
|
Antennaria parlinii ssp. parlinii
|
Antennaria plantaginifolia
|
Anthemis arvensis
|
Anthemis cotula
|
Anthoxanthum aristatum
|
| Anthoxanthum hirtum ssp. arcticum
|
Anthoxanthum monticola ssp. monticola
|
Anthoxanthum nitens
|
Anthoxanthum odoratum
|
Anthriscus cerefolium
|
Anthriscus sylvestris
|
| Anthyllis vulneraria
|
Antirrhinum majus
|
Apera interrupta
|
Apera spica-venti
|
Aphanes arvensis
|
Aphanes microcarpa
|
| Apios americana
|
Apium graveolens
|
Aplectrum hyemale
|
Apocynum androsaemifolium
|
Apocynum cannabinum
|
Apocynum x floribundum
|
| Aquilegia canadensis
|
Aquilegia vulgaris
|
Arabidopsis lyrata ssp. lyrata
|
Arabidopsis thaliana
|
Arabis caucasica
|
Arabis hirsuta var. pycnocarpa
|
| Aralia elata
|
Aralia hispida
|
Aralia nudicaulis
|
Aralia racemosa ssp. racemosa
|
Aralia spinosa
|
Arceuthobium pusillum
|
| Arctium lappa
|
Arctium minus
|
Arctium tomentosum
|
Arctostaphylos uva-ursi
|
Arenaria serpyllifolia var. serpyllifolia
|
Arethusa bulbosa
|
| Argemone albiflora ssp. albiflora
|
Argemone mexicana
|
Argentina anserina
|
Argentina egedii ssp. groenlandica
|
Arisaema dracontium
|
Arisaema triphyllum ssp. pusillum
|
| Arisaema triphyllum ssp. stewardsonii
|
Arisaema triphyllum ssp. triphyllum
|
Aristida adscensionis
|
Aristida basiramea
|
Aristida dichotoma
|
Aristida longespica var. geniculata
|
| Aristida longespica var. longespica
|
Aristida oligantha
|
Aristida purpurascens
|
Aristida tuberculosa
|
Aristolochia clematitis
|
Armoracia rusticana
|
| Arnica lanceolata ssp. lanceolata
|
Arnoglossum atriplicifolium
|
Arrhenatherum elatius
|
Artemisia abrotanum
|
Artemisia absinthium
|
Artemisia annua
|
| Artemisia biennis
|
Artemisia campestris ssp. caudata
|
Artemisia carruthii
|
Artemisia dracunculus
|
Artemisia filifolia
|
Artemisia frigida
|
| Artemisia ludoviciana ssp. albula
|
Artemisia ludoviciana ssp. ludoviciana
|
Artemisia pontica
|
Artemisia serrata
|
Artemisia stelleriana
|
Artemisia tridentata ssp. tridentata
|
| Artemisia umbelliformis
|
Artemisia vulgaris var. vulgaris
|
Arthraxon hispidus
|
Aruncus dioicus var. acuminatus
|
Aruncus dioicus var. dioicus
|
Aruncus dioicus var. vulgaris
|
| Arundinaria gigantea ssp. tecta
|
Asarum canadense
|
Asclepias amplexicaulis
|
Asclepias exaltata
|
Asclepias incarnata ssp. incarnata
|
Asclepias incarnata ssp. pulchra
|
| Asclepias purpurascens
|
Asclepias quadrifolia
|
Asclepias rubra
|
Asclepias syriaca
|
Asclepias tuberosa ssp. interior
|
Asclepias variegata
|
| Asclepias verticillata
|
Asclepias viridiflora
|
Asimina triloba
|
Asparagus officinalis
|
Asperugo procumbens
|
Asperula arvensis
|
| Asplenium bradleyi
|
Asplenium montanum
|
Asplenium platyneuron var. platyneuron
|
Asplenium rhizophyllum
|
Asplenium ruta-muraria
|
Asplenium scolopendrium var. americanum
|
| Asplenium trichomanes ssp. quadrivalens
|
Asplenium trichomanes ssp. trichomanes
|
Asplenium viride
|
Asplenium x ebenoides
|
Astilbe japonica
|
Astragalus canadensis
|
| Astragalus glycyphyllos
|
Astragalus neglectus
|
Athyrium filix-femina ssp. angustum
|
Athyrium filix-femina ssp. asplenioides
|
Atriplex cristata
|
Atriplex dioica
|
| Atriplex glabriuscula
|
Atriplex hortensis
|
Atriplex laciniata
|
Atriplex patula
|
Atriplex prostrata
|
Atriplex rosea
|
| Atriplex tatarica
|
Atropa bella-donna
|
Aureolaria flava var. flava
|
Aureolaria flava var. macrantha
|
Aureolaria pedicularia
|
Aureolaria virginica
|
| Aurinia petraea
|
Aurinia saxatilis
|
Avena fatua
|
Avena sativa
|
Axyris amaranthoides
|
Azolla caroliniana
|
| Azolla filiculoides
|