Weed Herbarium – by Scientific Name

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Abutilon
Abutilon theophrasti velvetleaf Malvaceae - Mallow Family
Acalypha
Acalypha rhomboidea rhombic copper-leaf Euphorbiaceae - Spurge Family
Achillea
Achillea millefolium yarrow Asteraceae (Compositae) - Aster or Sunflower Family
Actinomeris
Actinomeris alternifolia see - Verbesina alternifolia
Aegopodium
Aegopodium podagraria bishops goutweed Apiaceae (Umbelliferae) - Carrot Family
Ageratina
Ageratina altissima see - Eupatorium rugosum
Agrimonia
Agrimonia gryposepala agrimony Rosaceae - Rose Family
Agropyron
Agropyron repens see - Elytrigia repens
Agrostis
Agrostis palustris see - Agrostis stolonifera
Agrostis stolonifera creeping bentgrass Poaceae (Graminae) - Grass Family
Ailanthus
Ailanthus altissima tree-of-Heaven Simaroubaceae - Quassia Family
Akebia
Akebia quinata five-leaf akebia Lardizabalaceae - Lardizabala Family
Alliaria
Alliaria petiolata garlic mustard Brassicaceae (Cruciferae) - Mustard Family
Allium
Allium vineale wild garlic Liliaceae - Lily Family
Alopecurus
Alopecurus pratensis meadow foxtail Poaceae (Graminae) - Grass Family
Amaranthus
Amaranthus lividus livid pigweed Amaranthaceae - Amaranth Family
Amaranthus retroflexus red root pigweed Amaranthaceae - Amaranth Family
Amaranthus spinosus spiny amaranth Amaranthaceae - Amaranth Family
Ambrosia
Ambrosia artemisiifolia common ragweed Asteraceae (Compositae) - Aster or Sunflower Family
Ambrosia trifida giant ragweed Asteraceae (Compositae) - Aster or Sunflower Family
Ampelopsis
Ampelopsis brevipedunculata porcelainberry Vitaceae - Grape Family
Amphicarpaea
Amphicarpaea bracteata hog-peanut Fabaceae (Leguminosae) - Pea or Bean Family
Anagallis
Anagallis arvensis scarlet pimpernel Primulaceae - Primrose Family
Anaphalis
Anaphalis margaritacea pearly-everlasting Asteraceae (Compositae) - Aster or Sunflower Family
Andropogon
Andropogon gerardii big bluestem Poaceae (Graminae) - Grass Family
Andropogon scoparius little bluestem Poaceae (Graminae) - Grass Family
Angelica
Angelica atropurpurea purplestem angelica Apiaceae (Umbelliferae) - Carrot Family
Anoda
Anoda cristata spurred anoda Malvaceae - Mallow Family
Antennaria
Antennaria neglecta field pussytoes Asteraceae (Compositae) - Aster or Sunflower Family
Anthoxanthum
Anthoxanthum odoratum sweet vernalgrass Poaceae (Graminae) - Grass Family
Apios
Apios americana groundnut Fabaceae (Leguminosae) - Pea or Bean Family
Apocynum
Apocynum androsaemifolium spreading dogbane Apocynaceae - Dogbane Family
Apocynum cannabinum hemp dogbane Apocynaceae - Dogbane Family
Arabidopsis
Arabidopsis thaliana mouse-ear cress Brassicaceae (Cruciferae) - Mustard Family
Arabis
Arabis glabra tower mustard Brassicaceae (Cruciferae) - Mustard Family
Aralia
Aralia spinosa devil's walkingstick Araliaceae - Aralia Family
Arctium
Arctium lappa great burdock Asteraceae (Compositae) - Aster or Sunflower Family
Arctium minus common burdock Asteraceae (Compositae) - Aster or Sunflower Family
Arenaria
Arenaria serpyllifolia thymeleaf sandwort Caryophyllaceae - Pink Family
Artemisia
Artemisia vulgaris mugwort Asteraceae (Compositae) - Aster or Sunflower Family
Asclepias
Asclepias incarnata swamp milkweed Asclepiadaceae - Milkweed Family
Asclepias syriaca common milkweed Asclepiadaceae - Milkweed Family
Aster
Aster acuminatus see - Oclemena acuminata
Aster divaricatus white wood aster Asteraceae (Compositae) - Aster or Sunflower Family