Weed Herbarium – by Scientific Name

Welcome to the UMass Extension Weed Herbarium! Weeds in the herbarium can be viewed by common name, scientific name, or plant family by using the menu tabs below. Images and notes to aid in identification are revealed by clicking on the weed name. For questions and permission to use photos contact Randy Prostak; rprostak@umext.umass.edu.

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Abutilon
	Common Name Descriptor
Abutilon theophrasti	velvetleaf	Malvaceae - Mallow Family

Acalypha
	Common Name Descriptor
Acalypha rhomboidea	copper-leaf, rhombic	Euphorbiaceae - Spurge Family

Achillea
	Common Name Descriptor
Achillea millefolium	yarrow	Asteraceae (Compositae) - Aster or Sunflower Family

Actinomeris
	Common Name Descriptor
Actinomeris alternifolia	See - Verbesina alternifolia

Aegopodium
	Common Name Descriptor
Aegopodium podagraria	goutweed, bishops	Apiaceae (Umbelliferae) - Carrot Family

Ageratina
	Common Name Descriptor
Ageratina altissima	See - Eupatorium rugosum

Agrimonia
	Common Name Descriptor
Agrimonia gryposepala	agrimony	Rosaceae - Rose Family

Agropyron
	Common Name Descriptor
Agropyron repens	See - Elytrigia repens

Agrostis
	Common Name Descriptor
Agrostis palustris	See - Agrostis stolonifera
Agrostis stolonifera	bentgrass, creeping	Poaceae (Graminae) - Grass Family

Ailanthus
	Common Name Descriptor
Ailanthus altissima	tree-of-heaven	Simaroubaceae - Quassia Family

Akebia
	Common Name Descriptor
Akebia quinata	akebia, five-leaf	Lardizabalaceae - Lardizabala Family

Alliaria
	Common Name Descriptor
Alliaria petiolata	mustard, garlic	Brassicaceae (Cruciferae) - Mustard Family

Allium
	Common Name Descriptor
Allium vineale	garlic, wild	Liliaceae - Lily Family

Alopecurus
	Common Name Descriptor
Alopecurus pratensis	foxtail, meadow	Poaceae (Graminae) - Grass Family

Amaranthus
	Common Name Descriptor
Amaranthus lividus	pigweed, livid	Amaranthaceae - Amaranth Family
Amaranthus retroflexus	pigweed, redroot	Amaranthaceae - Amaranth Family
Amaranthus spinosus	amaranth, spiny	Amaranthaceae - Amaranth Family

Ambrosia
	Common Name Descriptor
Ambrosia artemisiifolia	ragweed, common	Asteraceae (Compositae) - Aster or Sunflower Family
Ambrosia trifida	ragweed, giant	Asteraceae (Compositae) - Aster or Sunflower Family

Ampelopsis
	Common Name Descriptor
Ampelopsis brevipedunculata	porcelainberry	Vitaceae - Grape Family

Amphicarpaea
	Common Name Descriptor
Amphicarpaea bracteata	hog-peanut	Fabaceae (Leguminosae) - Pea or Bean Family

Anagallis
	Common Name Descriptor
Anagallis arvensis	pimpernel, scarlet	Primulaceae - Primrose Family

Anaphalis
	Common Name Descriptor
Anaphalis margaritacea	pearly-everlasting	Asteraceae (Compositae) - Aster or Sunflower Family

Andropogon
	Common Name Descriptor
Andropogon gerardii	bluestem, big	Poaceae (Graminae) - Grass Family
Andropogon scoparius	bluestem, little	Poaceae (Graminae) - Grass Family

Angelica
	Common Name Descriptor
Angelica atropurpurea	angelica, purplestem	Apiaceae (Umbelliferae) - Carrot Family

Anoda
	Common Name Descriptor
Anoda cristata	anoda, spurred	Malvaceae - Mallow Family

Antennaria
	Common Name Descriptor
Antennaria neglecta	pussytoes, field	Asteraceae (Compositae) - Aster or Sunflower Family

Anthoxanthum
	Common Name Descriptor
Anthoxanthum odoratum	vernalgrass, sweet	Poaceae (Graminae) - Grass Family

Apios
	Common Name Descriptor
Apios americana	groundnut	Fabaceae (leguminosae) - Pea or Bean Family

Apocynum
	Common Name Descriptor
Apocynum androsaemifolium	dogbane, spreading	Apocynaceae - Dogbane Family
Apocynum cannabinum	dogbane, hemp	Apocynaceae - Dogbane Family

Arabidopsis
	Common Name Descriptor
Arabidopsis thaliana	cress, mouse-ear	Brassicaceae (Cruciferae) - Mustard Family

Arabis
	Common Name Descriptor
Arabis glabra	mustard, tower	Brassicaceae (Cruciferae) - Mustard Family

Aralia
	Common Name Descriptor
Aralia spinosa	devil's-walkingstick	Araliaceae - Aralia Family

Arctium
	Common Name Descriptor
Arctium lappa	burdock, great	Asteraceae (Compositae) - Aster or Sunflower Family
Arctium minus	burdock, common	Asteraceae (Compositae) - Aster or Sunflower Family

Arenaria
	Common Name Descriptor
Arenaria serpyllifolia	sandwort, thymeleaf	Caryophyllaceae - Pink Family

Artemisia
	Common Name Descriptor
Artemisia vulgaris	mugwort	Asteraceae (Compositae) - Aster or Sunflower Family

Asclepias
	Common Name Descriptor
Asclepias incarnata	milkweed, swamp	Asclepiadaceae - Milkweed Family
Asclepias syriaca	milkweed, common	Asclepiadaceae - Milkweed Family

Aster
	Common Name Descriptor
Aster acuminatus	See - Oclemena acuminata
Aster divaricatus	aster, white wood	Asteraceae (Compositae) - Aster or Sunflower Family

Barbarea
	Common Name Descriptor
Barbarea vulgaris	rocket, yellow	Brassicaceae (Cruciferae) - Mustard Family

Bassia
	Common Name Descriptor
Bassia scoparia	See - Kochia scoparia

Bellis
	Common Name Descriptor
Bellis perennis	daisy, English	Asteraceae (Compositae) - Aster or Sunflower Family

Berteroa
	Common Name Descriptor
Berteroa incana	alyssum, hoary	Brassicaceae (Cruciferae) - Mustard Family

Bidens
	Common Name Descriptor
Bidens frondosa	beggarticks, devil's	Asteraceae (Compositae) - Aster or Sunflower Family

Brassica
	Common Name Descriptor
Brassica arvensis	See - Brassica kaber