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UMass Extension Weed Herbarium
 

Welcome to the UMass Extension Weed Herbarium! Weeds in the herbarium can be sorted by common name, scientific name, or plant family by using the "Sort list by" links 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.

This online herbarium is a feature of the UMass Extension Landscape, Nursery, and Urban Forestry Program web site. Take me to the home page >>

Sort list by: Common Name | Scientific Name | Family Name

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R |S | T | U | V | W | X | Y | Z

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agrimony Agrimonia gryposepala Rosaceae - Rose Family
agrimony, tall hairy - see agrimony -
akebia, five-leaf Akebia quinata Lardizabalaceae - Lardizabala Family
alexanders, darkpurple - see purplestem angelica -
alexanders, golden Zizia aurea Apiaceae (Umbelliferae) - Carrot Family
alyssum, hoary Berteroa incana Brassicaceae (Cruciferae) - Mustard Family
amaranth, spiny Amaranthus spinosus Amaranthaceae - Amaranth Family
angelica, American - see purplestem angelica -
angelica, purplestem Angelica atropurpurea Apiaceae (Umbelliferae) - Carrot Family
aniseroot Osmorhiza longistilis Apiaceae (Umbelliferae) - Carrot Family
anoda, crested - see anoda, spurred -
anoda, spurred Anoda cristata Malvaceae - Mallow Family
apple-of-Sodom - see horsenettle -
aster, white wood Aster divaricatus Asteraceae (Compositae) - Aster or Sunflower Family
aster, whorled Oclemena acuminata Asteraceae (Compositae) - Aster or Sunflower Family
avens, white Geum canadense Rosaceae - Rose Family
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balsam apple - see cucumber, wild -
balsam, Himalaya Impatiens glandulifera Balsaminaceae - Touch-me-not Family
bamboo, Mexican - see knotweed, Japanese -
bamboo, Japanese - see knotweed, Japanese -
barnyardgrass Echinochloa crus-galli Poaceae (Graminae) - Grass Family
bean, wild - see groundnut -
bedstraw, annual - see bedstraw, catchweed -
bedstraw, catchweed Galium aparine Rubiaceae - Madder Family
bedstraw, hairy Galium pilosum Rubiaceae - Madder Family
bedstraw, smooth Galium mollugo Rubiaceae - Madder Family
beggarslice Hackelia virginiana Boraginaceae – Borage family
beggarticks, devil's Bidens frondosa Asteraceae (Compositae) - Aster or Sunflower
bellwort - see Venus lookingglass -
belvedere - see kochia -
bindweed, field Convolvulus arvensis Convolvulaceae - Morningglory Family
bindweed, fringed - see knotweed, black fringed -
bindweed, hedge Calystegia sepium Convolvulaceae - Morningglory Family
bird's nest - see carrot, wild -
bishops goutweed Aegopodium podagraria Apiaceae (Umbelliferae) - Carrot Family
bishops weed - see bishops goutweed -
bitter - see dock, broadleaf -
bittercress Cardamine hirsuta Brassicaceae (Cruciferae) - Mustard Family
bittercress, cuckoo Cardamine pratensis Brassicaceae (Cruciferae) - Mustard Family
bittersweet, asiatic - see bittersweet, oriental -
bittersweet, oriental Celastrus orbiculatus Celastraceae - Stafftree Family
black-eyed susan Rudbeckia hirta Asteraceae (Compositae) - Aster or Sunflower Family
bladder campion Silene vulgaris Caryophyllaceae - Pink Family
bluecurls Trichostema dichotomum Lamiaceae (Labiatae) - Mint Family
blue devil - see blueweed -
bluejoint - see bluwestem, big -
bluegrass, annual Poa annua Poaceae (Graminae) - Grass Family
bluegrass, bulbous Poa bulbosa Poaceae (Graminae) - Grass Family
bluestem, big Andropogon gerardii Poaceae (Graminae) - Grass Family
bluestem, little Andropogon scoparius Poaceae (Graminae) - Grass Family
bluets Houstonia caerulea Rubiaceae - Madder Family
blueweeed Echium vulgare Boraginaceae - Borage Family
boneset Eupatorium perfoliatum Asteraceae (Compositae) - Aster or Sunflower Family
bouncingbet Saponaria officinalis Caryophyllaceae - Pink Family
brackenfern Pteridium aquilinum Polypodiaceae – Fern Family
brome, downy Bromus tectorum Poaceae (Graminae) - Grass Family
brome, drooping - see brome, downy -
brome, smooth Bromus inermis Poaceae (Graminae) - Grass Family
broombeard grass - see bluestem, little -
buckhorn - see plantain, narrowleaf -
buckwheat, wild Polygonum convolvulus Polygonaceae - Smartweed or Buckwheat Family
bugleweed, American Lycopus americanus Caryophyllaceae - Pink Family
bugloss, viper's - see blueweed -
burcucumber Sicyos angulatus Curcurbitaceae - Gourd Family
burdock, common Arctium minus Asteraceae (Compositae) - Aster or Sunflower Family
burdock, great Arctium lappa Asteraceae (Compositae) - Aster or Sunflower Family
burnweed, american - see pilewort -
bush clover, slender  Lespedeza virginica Fabaceae (Leguminosae) - Pea or Bean Family
butter-and-eggs - see toadflax, yellow -
butterbur Petasites hybridus Asteraceae (Compositae) - Aster or Sunflower Family
butterbur-dock - see butterbur -
buttercup, bulbous Ranunculus bulbosus Ranunculaceae - Buttercup Family
buttercup, common - see buttercup, tall -
buttercup, creeping Ranunculus repens Ranunculaceae - Buttercup Family
buttercup, fig - see celandine, lesser -
buttercup, kidney-leaved - see buttercup, smallflower -
buttercup, meadow - see buttercup, tall -
buttercup, smallflower Ranunculus abortivus Ranunculaceae - Buttercup Family
buttercup, tall Ranunculus acris Ranunculaceae - Buttercup Family
butterprint - see velvetleaf -
buttonweed - see velvetleaf -
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campion, white - see cockle, white -
canarygrass, reed Phalaris arundinacea Poaceae (Graminae) - Grass Family
candlewicks - see mullein, common -
carelessweed - see pigweed, redroot -
carpenter's square - see figwort, common -
carpetweed Mollugo verticillata Aizoaceae - Carpetweed Family
carrion flower Smilax herbacea Smilacaceae - Catbrier Family
carrion vine - see carrion flower -
carrot, wild Daucus carota Apiaceae (Umbelliferae) - Carrot Family
catchweed - see bedstraw, catchweed -
cat's ear Hypochaeris radicata Asteraceae (Compositae) -Aster or Sunflower Family
catsear, spotter - see cat's ear -
cattail, common Typha latifolia Typhaceae - Cattail Family
celandine, greater Chelidonium majus Papaveraceae - Poppy Family
celandine, lesser Ranunculus ficaria Ranunculaceae - Buttercup Family
chamomile, rayless - see pineappleweed -
charlock - see mustard, wild -
cheat - see brome, downy -
cheatgrass - see brome, downy -
cheeses - see mallow, common -
chickweed, common Stellaria media Caryophyllaceae - Pink Family
chickweed, indian - see carpetweed -
chickweed, mouseear Cerastium vulgatum Caryophyllaceae - Pink Family
chickweed, red - see pimpernel, scarlet -
chickweed, sticky Cerastium glomeratum Caryophyllaceae - Pink Family
chicory Cichorium intybus Asteraceae (Compositae) - Aster or Sunflower Family
chocolate vine - see akebia, five-leaf -
chrysanthemum, wild - see mugwort -
chufa - see nutsedge, yellow -
church steeples - see agrimony -
cicely, smoother sweet - see aniseroot -
cicely, woolly sweet - see cicely, sweet -
cicely, sweet Osmorhiza claytoni Apiaceae (Umbelliferae) - Carrot Family
cinquefoil, common - see cinquefoil, old field -
cinquefoil, old field Potentilla simplex Rosaceae - Rose Family
cinquefoil, rough Potentilla norvegica Rosaceae - Rose Family
cinquefoil, round-fruited - see cinquefoil, sulfur -
cinquefoil, silvery Potentilla argentea Rosaceae - Rose Family
cinquefoil, sulfur Potentilla recta L Rosaceae - Rose Family
clearweed Pilea pumila Urticaceae - Nettle Family
cleavers - see bedstraw, catchweed -
clematis, wild - see virgin's bower -
clover, alsike Trifolium hybridum Fabaceae (Leguminosae) - Pea or Bean Family
clover, dutch - see clover, white -
clover, old field - see clover, rabbitfoot -
clover, purple - see clover, red -
clover, rabbitfoot Trifolium arvense Fabaceae (Leguminosae) - Pea or Bean Family
clover, red Trifolium pratense Fabaceae (Leguminosae) - Pea or Bean Family
clover, stone - see clover, rabbitfoot -
clover, white Trifolium repens Fabaceae (Leguminosae) - Pea or Bean Family
cocklebur Xanthium strumarium Asteraceae (Compositae) - Aster or Sunflower Family
cockle, white Silene alba Caryophyllaceae - Pink Family
cockspur grass - see barnyardgrass -
coltsfoot Tussilago farfara Asteraceae (Compositae) - Aster or Sunflower Family
compass weed - see lettuce, prickly -
compass plant - see lettuce, prickly -
copper-leaf, rhombic Acalypha rhomboidea Euphorbiaceae - Spurge Family
cottonweed Froelichia gracilis Amaranthaceae - Amaranth Family
couchgrass - see quackgrass -
cowbane - see waterhemlock, spotted -
cowcress - see pepperweed, field -
cowparsnip Heracleum lanatum Apiaceae (Umbelliferae) - Carrot Family
crabgrass, hairy - see crabgrass, large -
crabgrass, large Digitaria sanguinalis Poaceae (Graminae) - Grass Family
crabgrass, silver - see goosegrass -
crabgrass, small - see crabgrass, smooth -
crabgrass, smooth Digitaria ischaemum Poaceae (Graminae) - Grass Family
cranesbill, spotted - see geranium, wild -
creeping bentgrass Agrostis stolonifera,
Agrostis palustris 		Poaceae (Graminae) - Grass Family
creeping charlie - see ground ivy -
cress, mouse-ear Arabidopsis thaliana Bassicaceae (Cruciferae) - Mustard Family
creeping jenny - see moneywort -
cress, winter - see rocket, yellow -
crowfoot - see buttercup, smallflower -
crowfoot - see goosegrass -
crowfoot, kidney-leaved - see buttercup, smallflower -
crowfoot, smooth-leaved - see buttercup, smallflower -
crowfoot, tall - see buttercup, tall -
crownvetch, trailing Coronilla varia Fabaceae (Leguminosae) - Pea or Bean Family
cuckooflower - see bittercress, cuckoo -
cuckooflower - see ragged robin -
cucumber, wild Echinocystis lobata Cucurbitaceae - Gourd Family
cupplant Silphium perfoliatum Asteraceae (Compositae) - Aster or Sunflower Family
cypress, mock - see kochia -
cypress, summer - see kochia -
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daisy, blue - see chicory -
daisy, field - see daisy, oxeye -
daisy, english Bellis perennis Asteraceae (Compositae) - Aster or Sunflower Family
daisy, oxeye Chrysanthemum leucanthemum Asteraceae (Compositae) - Aster or Sunflower Family
dallisgrass Paspalum dilatatum Poaceae (Graminae) - Grass Family
dame's violet - see damesrocket -
damesrocket Hesperis matronalis Brassicaceae (Cruciferae) - Mustard Family
dandelion Taraxacum officinale Asteraceae (Compositae) - Aster or Sunflower Family
dandelion, fall Leontodon autumnalis Asteraceae (Compositae) - Aster or Sunflower Family
dandelion, false - see cat's ear -
dayflower, Asiatic Commelina communis Commelinaceae - Spiderwort Family
deadnettle, purple - see deadnettle, red -
deadnettle, red Lamium purpureum Lamiaceae (Labiatae) - Mint Family
deertonguegrass Dicanthelium clandestinum Poaceae (Graminae) - Grass Family
deptford pink Dianthus armeria Caryophyllaceae - Pink Family
devilgrass - see quackgrass -
devil's apple - see jimsonweed -
devil's paintbrush - see hawkweed, orange -
devil's tomato - see horsenettle -
devil's-walkingstick Aralia spinosa Araliaceae - Aralia Family
dock, broadleaf Rumex obtusifolius Polygonaceae - Smartweed or Buckwheat Family
dock, curled - see dock curly -
dock, curly Rumex crispus Polygonaceae - Smartweed or Buckwheat Family
dock, narrowleaf - see dock, curly -
dock, red-veined - see dock, broadleaf -
dock, sour - see dock, curly -
dock, velvet - see mullein, common -
dock, yellow - see dock, curly -
dodder Cuscuta spp. Convolvulaceae - Morningglory Family
dog-strangle vine - see swallowwort, black -
dogfennel Eupatorium capillifolium Asteraceae (Compositae) - Aster or Sunflower Family
dogbane, hemp Apocynum cannabinum Apocynaceae - Dogbane Family
dogbane, spreading                Apocynum androsaemifolium Apocynaceae - Dogbane Family
doorweed - see knotweed, prostrate -
downy cress - see brome, downy -
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eveningprimrose, common Oenothera biennis Onagraceae - Evening Primrose Family
everlasting pea - see peavine, everlasting -
everlasting pea, broad-leaved - see peavine, everlasting -
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false hellebore, green Veratrum viride Liliaceae - Lily Family
fat hen - see lambsquarters, common -
fennel, tall - see dogfennel -
fescue, tall Festuca arundinacea Poaceae (Graminae) - Grass Family
fieldcress, prostrate Rorippa x prostrata Brassicaceae (Cruciferae) - Mustard Family
figwort, common Scrophularia nodosa Scrophulariaceae - Figwort Family
figwort, knotted - see figwort, common -
filaree, redstem Erodium cicutarium Geranium - Geranium Family
fireweed Epilobium angustifolium Onagraceae - Evening Primrose Family
fireweed - see kochia -
fireweed, mexican - see kochia -
flannelleaf - see mullein, common -
fleabane, annual Erigeron annuus Asteraceae (Compositae) - Aster or Sunflower Family
fleabane, poor-robin Erigeron pulchellus Asteraceae (Compositae) - Aster or Sunflower Family
flower-of-an-hour - see mallow, venice -
four-o'clock, wild Mirabilis nyctaginea Nyctaginaceae - Four-O'clock Family
foxtail, giant Setaria faberi Poaceae (Graminae) - Grass Family
foxtail, golden - see foxtail, yellow -
foxtail, meadow Alopecurus pratensis Poaceae (Graminae) - Grass Family
foxtail, yellow Setaria glauca Poaceae (Graminae) - Grass Family
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galinsoga, hairy Galinsoga ciliata Asteraceae (Compositae) - Aster or Sunflower Family
garlic, field - see garlic, wild -
garlic, wild Allium vineale Liliaceae - Lily Family
geranium, wild Geranium maculatum Geraniaceae – Geranium Family
gill-over-the-ground - see ground ivy -
gipsyweed - see speedwell, common -
goat's-beard, yellow - see salsify, yellow -
golden-thread vine - see dodder -
goldenrod, Canada Solidago canadensis Asteraceae (Compositae) - Aster or Sunflower Family
goldenrod, grass-leaved - see goldenrod, narrowleaf -
goldenrod, lance-leaved - see goldenrod, narrowleaf -
goldenrod, narrowleaf Solidago graminifolia Asteraceae (Compositae) - Aster or Sunflower Family
goldenod, seashore Solidago sempervirens Asteraceae (Compositae) - Aster or Sunflower Family
goosefoot, clammy Chenopodium pumilio Chenopodiaceae - Goosefoot Family
goosefoot, white - see lambsquarters, common -
goosegrass Eleusine indica Poaceae (Graminae) - Grass Family
goutweed - see bishops goutweed -
grape, wild Vitis spp. Vitaceae - Grape Family
grassleaf starwort - see starwort, little -
greasegrass - see purpletop -
ground ivy Glechoma hederacea Lamiaceae (Labiatae) - Mint Family
groundelder - see bishops goutweed -
groundnut Apios americana Fabaceae (Leguminosae) - Pea or Bean Family
groundsel, common Senecio vulgaris Asteraceae (Compositae) - Aster or Sunflower Family
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hawksbeard, narrowleaf Crepis tectorum Asteraceae (Compositae) - Aster or Sunflower Family
hawkweed Hieracium pratense Asteraceae (Compositae) - Aster or Sunflower Family
hawkweed, European Hieracium vulgatum Asteraceae (Compositae) - Aster or Sunflower Family
hawkweed, field - see hawkweed -
hawkweed, orange Hieracium aurantiacum Asteraceae (Compositae) - Aster or Sunflower Family
hawkweed, panicled Hieracium paniculatum Asteraceae (Compositae) - Aster or Sunflower Family
hayfever weed - see ragweed common -
healall Prunella vulgaris Lamiaceae (Labiatae) - Mint Family
heliotrope, garden - see valerian, common -
hellebore, false or Indian - see false hellebore, green -
hemp, American - see dogbane, hemp -
hemp, Indian - see dogbane, hemp -
hempnettle, common Galeopsis tetrahit Lamiaceae (Labiatae) - Mint Family
henbit Lamium amplexicaule Lamiaceae (Labiatae) - Mint Family
herdgrass - see timothy -
hog-peanut Amphicarpaea bracteata Fabaceae (Leguminosae) - Pea or Bean Family
honeysuckle, Japanese Lonicera japonica Caprifoliaceae – Honeysuckle Family
hops, Japanese Humulus japonicus Cannabaceae – Hemp Family
horsebalm Collinsonia canadensis Lamiaceae (Labiatae) - Mint Family
horsenettle Solanum carolinense Solanaceae - Nightshade Family
horsetail, field Equisetum arvense Equisetaceae - Horsetail Family
horsetail, scouringrush - see scouring rush -
horseweed Conyza canadensis Asteraceae (Compositae) - Aster or Sunflower Family
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Indian poke - see false hellebore, green -
indiangrass, yellow Sorghastrum nutans Poaceae (Graminae) – Grass Family
inkberry - see pokeweed, common -
ironweed - see wingstem -
ivy-leaved toadflax - see kenilworth ivy -
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jacob's-ladder - see carrion flower -
jamestownweed - see jimsonweed -
Jerusalem artichoke Helianthus tuberosus Asteraceae (Compositae) - Aster or Sunflower Family
Jerusalem-oak - see goosefoot, Jerusalem-oak -
jewelweed - see touch-me-not, spotted -
jewelweed, pale - see touch-me-not, pale -
jewgrass - see stiltgrass, Japanese -
jimsonweed Datura stramonium Solanaceae - Nightshade Family
joe-pye weed, eastern Eupatorium dubium Asteraceae (Compositae) - Aster or Sunflower Family
joe-pye weed, hollow-stemmed Eupatorium fistulosum Asteraceae (Compositae) - Aster or Sunflower Family
joe-pyeweed, purple-node - see joepyweed, sweet -
joe pyeweed, purple-stem - see joepyweed, sweet -
joe-pye weed, spotted Eupatorium maculatum Asteraceae (Compositae) - Aster or Sunflower Family
joe-pye weed, sweet Eupatorium purpureum Asteraceae (Compositae) - Aster or Sunflower Family
joe pye weed, sweetscented - see joepyweed, sweet -
johnny-jump-ups - see violet, field -
johnsongrass Sorghum halepense Poaceae (Graminae) – Grass Family
jumpseed - see knotweed, Virginia -
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kenilworth ivy Cymbalaria muralis Scrophulariaceae - Figwort Family
king devil - see hawkweed -
king-of-the-meadow - see meadowrue, tall -
knapweed, spotted Centaurea maculosa Asteraceae (Compositae) - Aster or Sunflower Family
knawel Scleranthus annuus Caryophyllaceae - Pink Family
knotweed, black fringed Polygonum cilinode Polygonaceae - Smartweed or Buckwheat Family
knotweed, German - see knawel -
knotweed, giant Polygonum sachalinense

Polygonaceae - Smartweed or Buckwheat Family
knotweed, Japanese Polygonum cuspidatum Polygonaceae - Smartweed or Buckwheat Family
knotweed, Mexican - see knotweed, Japanese -
knotweed, pink - see smartweed, Pennsylvania -
knotweed, prostrate Polygonum aviculare Polygonaceae - Smartweed or Buckwheat Family
knotweed, Virginia Tovara virginiana Polygonaceae - Smartweed or Buckwheat Family
kochia Kochia scoparia Chenopodiaceae - Goosefoot Family
kudzu Pueraria montana Fabaceae (Leguminosae) - Pea or Bean Family
kudzu-vine - see kudzu -
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lady's smock - see bittercress, cuckoo -
lambsquarters, common Chenopodium album Chenopodiaceae - Goosefoot Family
lawngrass, Japanese Zoysia japonica Poaceae (Graminae) – Grass Family
lawngrass, Korean - see lawngrass, Japanese -
lespedeza, Virginia - see bush clover, slender -
lettuce, biennial Lactuca biennis Asteraceae (Compositae) - Aster or Sunflower Family
lettuce, canada - see lettuce, tall -
lettuce, prickly Lactuca serriola Asteraceae (Compositae) - Aster or Sunflower Family
lettuce, tall Lactuca canadensis Asteraceae (Compositae) - Aster or Sunflower Family
lettuce, tall blue - see lettuce, biennial -
lettuce, wild - see lettuce, tall -
lily-of-the-valley, false Maianthemum canadense Liliaceae - Lily Family
lion's tooth - see dandelion -
little starwort Stellaria graminea

Caryophyllaceae - Pink Family
liverwort Marchantia polymorpha Phylum: Hepatophyta
lobelia, great Lobelia siphilitica Lobeliaceae - Bluebell Family
locust, bristly Robinia hispida Fabaceae (Leguminosae) - Pea or Bean Family
loosestrife, fringed Lysimachia ciliata Primulaceae - Primrose Family
loosestrife, purple Lythrum salicaria Lythraceae - Loosestrife Family
lovegrass - see stinkgrass -
lovegrass, purple Eragrotis spectabilis Poaceae (Graminae) - Grass Family
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madder, wild - see bedstraw, smooth -
maiden pink Dianthus deltoides Caryophyllaceae - Pink Family
mallow, common Malva neglecta Malvaceae - Mallow Family
mallow, round-leaved - see mallow, common -
mallow, indian - see velvetleaf -
mallow, low - see mallow, common -
mallow, venice Hibicus trionum Malvaceae - Mallow Family
marestail - see horseweed -
markweed - see poison-ivy -
Mary's grass - see stiltgrass, Japanese -
masterwort - see purplestem angelica -
matgrass - see knotweed, prostrate -
mayflower, Canada - see lily-of-the-valley, false -
mayweed - see pineappleweed -
meadowrue, tall Thalictrum polygamum Ranunculaceae - Buttercup Family
mealweed - see lambsquarters, common -
medic, black Medicago lupulina Fabaceae (Leguminosae) - Pea or Bean Family
melilot - see copper-leaf, Virginia -
mexicantea Chenopodium ambrosioides Chenopodiaceae - Goosefoot Family
mercuryweed - see mallow, common -
milfoil - see yarrow -
milkmaid - see bittercress, cuckoo -
milkweed, climbing - see swallowwort, pale -
milkweed, climbing - see swallowwort, black -
milkweed, common Asclepias syriaca Asclepiadaceae - Milkweed Family
milkweed, swamp Asclepias incarnata Asclepiadaceae - Milkweed Family
millet, wild - see foxtail, yellow -
mock-cypress - see kochia -
moneywort Lysimachia nummularia Primulaceae - Primrose Family
monkey-flower, Allegheny - see monkey flower, long stalked -
monkey-flower, blue - see monkey flower, long stalked -
monkey flower, sharp-winged Mimulus alatus Scrophulariaceae - Figwort Family
morningglory, wild - see bindweed, field -
morningglory, wild - see bindweed, hedge -
motherwort Leonurus cardiaca

Lamiaceae (Labiatae) - Mint Family
mugwort Artemisia vulgaris Asteraceae (Compositae) - Aster or Sunflower Family
mullein, common Verbascum thapsus Scrophulariaceae - Figwort Family
mustard, field - see mustard, wild -
mustard, garlic Alliaria petiolata Brassicaceae (Cruciferae) - Mustard Family
mustard, hedge Sisymbrium officinale Brassicaceae (Cruciferae) - Mustard Family
mustard, tower Arabis glabra Brassicaceae (Cruciferae) - Mustard Family
mustard, treacle - see mustard, wallflower-
mustard, wallflower Erysimum cheiranthoides Brassicaceae (Cruciferae) - Mustard Family
mustard, wild Brassica kaber Brassicaceae (Cruciferae) - Mustard Family
mustard, worm-seed - see mustard, wallflower-
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neckweed - see speedwell, purslane -
Nepalese browntop - see stiltgrass, Japanese -
nettle, stinging Urtica dioica

Urticaceae - Nettle Family
nightshade, bittersweet Solanum dulcamara Solanaceae - Nightshade Family
nightshade, climbing - see nightshade, bittersweet -
nightshade, deadly - see nightshade, eastern black -
nightshade, eastern black Solanum ptycanthum Solanaceae - Nightshade Family
nightshade, enchanter's Circaea quadrisulcata Onagraceae - Evening Primrose Family
nimblewill Muhlenbergia schreberi Poaceae (Graminae) - Grass Family
nipplewort  Lapsana communis Asteraceae (Compositae) - Aster or Sunflower Family
nut-grass - see nutsedge, yellow -
nutgrass, German - see knawel -
nutsedge, yellow Cyperus esculentus Cyperaceae - Sedge Family
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orchardgrass Dactylis glomerata Poaceae (Graminae) - Grass Family
oxalis - see woodsorrel, yellow -
oxalis - see woodsorrel, creeping -
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paintbrush, yellow - see hawkweed -
panicgrass, round fruited Dicanthelium sphaerocarpon Poaceae (Graminae) - Grass Family
panicum, fall Panicum dichotomiflorum Poaceae (Graminae) - Grass Family
pansy, field - see violet, field -
pansy, wild - see violet, field -
parsnip, field - see parsnip, wild -
parsnip, wild Pastinaca sativa Apiaceae (Umbelliferae) - Carrot Family
paspalum Paspalum setaceum Poaceae (Graminae) - Grass Family
pearlwort, birdseye Sagina procumbens Caryophyllaceae - Pink Family
pearly-everlasting Anaphalis margaritacea Asteraceae (Compositae) - Aster or Sunflower Family
peavine, everlasting Lathyrus latifolius Fabaceae (Leguminosae) - Pea or Bean Family
pennycress, field Thlaspi arvense Brassicaceae (Cruciferae) - Mustard Family
peppergrass, wild - see pepperweed, Virginia -
peppergrass, field - see pepperweed, field -
pepperweed, field Lepidium campestre Brassicaceae (Cruciferae) - Mustard Family
pepperweed, Virginia Lepidium virginicum Brassicaceae (Cruciferae) - Mustard Family
piemaker - see velvetleaf -
pigeon berry - see pokeweed, common -
pigweed, livid Amaranthus lividus Amaranthaceae - Amaranth Family
pigweed, redroot Amaranthus retroflexus Amaranthaceae - Amaranth Family
pigweed, spiny - see amaranth, spiny -
pilewort Erechtites hieraciifolia Asteraceae (Compositae) - Aster or Sunflower Family
pimpernel, scarlet Anagallis arvensis Primulaceae - Primrose Family
pineappleweed Matricaria matricariodes Asteraceae (Compositae) - Aster or Sunflower Family
pinkweed - see smartweed, Pennsylvania -
plantain, broadleaf Plantago major Plantaginaceae - Plantain Family
plantain, buckhorn - see plantain, narrowleaf -
plantain, common - see plantain, broadleaf -
plantain, dooryard - see plantain, broadleaf -
plantain, English - see plantain, narrowleaf -
plantain, narrowleaf Plantago lanceolata Plantaginaceae - Plantain Family
poison-ivy Toxicodendron radicans Anacardiaceae - Cashew Family
poke - see pokeweed, common -
pokeberry - see pokeweed, common -
pokeweed, common Phytolacca americana Phytolaccaceae - Pokeweed Family
poor man's weatherglass - see pimpernel, scarlet -
porcelainberry Ampelopsis brevipedunculata Vitaceae - Grape Family
portulaca, wild - see purslane, common -
potato bean - see groundnut -
purpletop Tridens flavus Poaceae (Graminae) - Grass Family
purslane, common Portulaca oleracea Portulacaceae - Purslane Family
pursley - see purslane, common -
pussytoes, field Antennaria neglecta Asteraceae (Compositae) - Aster or Sunflower Family
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quackgrass Elytrigia repens Poaceae (Graminae) - Grass Family
quaker ladies - see bluets -
Queen Anne's lace - see carrot, wild -
quickweed - see galinsoga, hairy -
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radish, wild Raphanus raphanistrum Brassicaceae (Cruciferae) - Mustard Family
ragged robin Lychnis flos-cuculi Caryophyllaceae - Pink Family
ragweed, common Ambrosia artemisiifolia Asteraceae (Compositae) - Aster or Sunflower Family
ragweed, giant Ambrosia trifida Asteraceae (Compositae) - Aster or Sunflower Family
ragweed, great - see ragweed, giant -
ragwort - see groundsel, common -
ragwort, tansy Senecio jacobaea Asteraceae (Compositae) - Aster or Sunflower Family
raspberry, purple-flowering Rubus odoratus Rosaceae - Rose Family
raspberry, wine - see wineberry -
rattleweed, cockscomb - see yellow-rattle -
redtop, tall - see purpletop -
reed, common Phragmites australis Poaceae (Graminae) - Grass Family
ribgrass - see plantain, narrowleaf -
ribwort - see plantain, narrowleaf -
richweed - see clearweed -
richweed - see horsebalm -
robin-runaway - see ground ivy -
rocket, yellow Barbarea vulgaris Brassicaceae (Cruciferae) - Mustard Family
rose, multiflora Rosa multiflora Rosaceae - Rose Family
robin-runaway - see ground ivy -
rush, path Juncus tenuis Juncaceae - Rush Family
rose acacia - see locust, bristly -
rosinweed, cup - see cupplant -
rosinweed, cupleaf - see cupplant -
rosinweed, squarestem - see cupplant -
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salsify, yellow Tragopogon dubius Asteraceae (Compositae) - Aster or Sunflower Family
sandbur, longspine Cenchrus longispinus Poaceae (Graminae) - Grass Family
sandspurry, red Spergularia rubra Caryophyllaceae - Pink Family
sandwort, thymeleaf  Arenaria serpyllifolia Caryophyllaceae - Pink Family
scouring rush Equisetum hyemale Equisetaceae - Horsetail Family
selfheal - see healall -
shepherd's-purse Capsella bursa-pastoris Brassicaceae (Cruciferae) - Mustard Family
showy tick-trefoil - see hoary tickclover -
silvergrass, amur Miscanthus sacchariflorus Poaceae (Graminae) - Grass Family
skunk-cabbage, common Symplocarpus foetidus Araceae - Arum Family
smartweed, hedge Polygonum scandens Polygonaceae - Smartweed or Buckwheat Family
smartweed, ladysthumb Polygonum persicaria Polygonaceae - Smartweed or Buckwheat Family
smartweed, Pennsylvania Polygonum pensylvanicum Polygonaceae - Smartweed or Buckwheat Family
snakeroot, white Eupatorium rugosum Asteraceae (Compositae) - Aster or Sunflower Family
snapdragon, wild - see toadflax. wild -
soapwort - see bouncingbet -
sorrel, field - see sorrel, red -
sorrel, red Rumex acetosella Polygonaceae - Smartweed or Buckwheat Family
sorrel, sheep - see sorrel, red -
sourgrass - see woodsorrel, creeping -
sourgrass - see woodsorrel, yellow -
sourgrass - see sorrel, red -
sowthistle, annual Sonchus oleraceus Asteraceae (Compositae) - Aster or Sunflower Family
sowthistle, common - see sowthistle, annual -
sowthistle, creeping - see sowthistle, perennial -
sowthistle, field - see sowthistle, perennial -
sowthistle, perennial Sonchus arvensis Asteraceae (Compositae) - Aster or Sunflower Family
sowthistle, spiny Sonchus asper Asteraceae (Compositae) - Aster or Sunflower Family
sowthistle, spiny-leaved - see sowthistle, spiny -
speargrass - see bluegrass, annual -
speedwell, common Veronica officinalis Scrophulariaceae - Figwort Family
speedwell, corn Veronica arvensis Scrophulariaceae - Figwort Family
speedwell, ivyleaf Veronica hederifolia Scrophulariaceae - Figwort Family
speedwell, purslane Veronica peregrina Scrophulariaceae - Figwort Family
speedwell, thymeleaf Veronica serpyllifolia Scrophulariaceae - Figwort Family
springbeauty, narrowleaf Claytonia virginica Portulacaceae - Purslane Family
springbeauty, Virginia - see narrowleaf springbeauty -
spurge, cypress Euphorbia cyparissias Euphorbiaceae - Spurge Family
spurge, Hungarian - see spurge, leafy -
spurge, leafy Euphorbia esula Euphorbiaceae - Spurge Family
spurge, prostrate - see spurge, spotted -
spurge, spotted Euphorbia maculata Euphorbiaceae - Spurge Family
St. Johnswort Hypericum perforatum Hyperiacaceae - St. Johnswort Family
star-of-bethlehem Ornithogalum umbellatum Liliaceae - Lily Family
staghorn - see sumac, staghorn -
starweed - see chickweed, common -
starwort - see chickweed, common -
sticklewort - see agrimony -
sticktight - see beggarticks, devil's -
stickseed, Virginia - see beggarslice -
stickwort - see agrimony -
stickywilly - see bedstraw, catchweed -
stiltgrass, Japanese Microstegium vimineum Poaceae (Graminae) - Grass Family
stinkgrass Eragrostis cilianensis Poaceae (Graminae) - Grass Family
stinkhorn - see jimsonweed -
stinking willie - see ragwort, tansy -
stinkweed - see jimsonweed -
stitchwort - see starwort, little -
stoneroot - see horsebalm -
storksbill - see filaree, redstem -
strawberry, wild Fragaria virginiana Rosaceae - Rose Family
succory - see chicory -
sumac, smooth Rhus glabra Anacardiaceae - Cashew Family
sumac, staghorn Rhus typhina Anacardiaceae - Cashew Family
swallowwort, black Cynanchum nigrum Asclepiadaceae - Milkweed Family
swallowwort, pale Cynanchum rossicum Asclepiadaceae - Milkweed Family
sweet jarvil - see cicely, sweet -
sweet pea - see peavine, everlasting -
sweetclover, white Melilotus alba Fabaceae (Leguminosae) - Pea or Bean Family
sweetclover, yellow Melilotus offincinalis Fabaceae (Leguminosae) - Pea or Bean Family
switchgrass Panicum virgatum Poaceae (Graminae) - Grass Family
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tansy Tanacetum vulgare Asteraceae (Compositae) - Aster or Sunflower Family
tearthumb, arrowleaf Polygonum sagittatum Polygonaceae - Smartweed or Buckwheat Family
tearthumb, halberd-leaved Polygonum arifolium Polygonaceae - Smartweed or Buckwheat Family
teasel Dipsacus fullonum Dipsacaceae - Teasel Family
thimbleberry - see raspberry, purple-flowering -
thistle, bull Cirsium vulgare Asteraceae (Compositae) - Aster or Sunflower Family
thistle, Canada Cirsium arvense Asteraceae (Compositae) - Aster or Sunflower Family
thistle, creeping - see thistle, Canada -
thorn apple - see jimsonweed -
thoroughwort - see boneset -
thousandleaf - see yarrow -
three-seeded mercury - see copper-leaf, Virginia -
tickclover, hoary Desmodium canadense Fabaceae (Leguminosae) - Pea or Bean Family
ticktrefoil, prostrate Desmodium rotundifolium Fabaceae (Leguminosae) - Pea or Bean Family
ticktrefoil, round-leaved - see ticktrefoil, prostrate -
timothy Phleum pratense Poaceae (Graminae) - Grass Family
toadflax, annual - see toadflax, oldfield -
toadflax, blue - see toadflax, oldfield -
toadflax, Canada - see toadflax, oldfield -
toadflax, oldfield Linaria canadensis Scrophulariaceae - Figwort Family
toadflax, yellow Linaria vulgaris Scrophulariaceae - Figwort Family
tobacco, indian Lobelia inflata Lobeliaceae - Bluebell Family
touch-me-not, pale Impatiens pallida Balsaminaceae - Touch-me-not Family
touch-me-not, spotted Imapatiens capensis Balsaminaceae - Touch-me-not Family
tree-of-heaven Ailanthus altissima Simaroubaceae - Quassia Family
tree-that- grows-in-Brooklyn - see tree-of-heaven -
trefoil, birdsfoot Lotus corniculatus Fabaceae (Leguminosae) - Pea or Bean Family
trumpetweed - see joe-pye weed, hollow-stemmed -
turkeyclaw - see bluestem, big -
turkeyfoot - see bluestem, big -
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umbrellawort, heart-leaved - see four-o'clock, wild -
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valerian, common Valeriana officinalis Valerianaceae - Valerian Family
velvetgrass, common Holcus lanatus Poaceae (Graminae) – Grass Family
velvetleaf Abutilon theophrasti Malvaceae - Mallow Family
Venus lookingglass Triodanis perfoliata Campanulaceae - Bluebell Family
vernalgrass, sweet Anthoxanthum odoratum Poaceae (Graminae) – Grass Family
vervain, blue Verbena hastata Verbenaceae - Verbena Family
vervain, bracted - see vervain, prostrate -
vervain, common - see vervain, blue -
vervain, large bracted - see vervain, prostrate -
vervain, prostrate Verbena bracteata Verbenaceae - Verbena Family
vervain, white Verbena urticifolia Verbenaceae - Verbena Family
vetch, bird Vicia cracca Fabaceae (Leguminosae) - Pea or Bean Family
violet, common blue Viola papilionacea Violaceae - Violet Family
violet, field Viola arvensis Violaceae - Violet Family
virgin's bower Clematis virginiana Ranunculaceae - Buttercup Family
Virginia creeper Parthenocissus quinquefolia Vitaceae - Grape Family
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wallflower, worm-seed - see mustard, wallflower -
water-horehound - see bugleweed -
water-horehound, cut-leaves - see bugleweed, American-
watergrass - see barnyardgrass -
waterhemlock, spotted Cicuta maculata Apiaceae (Umbelliferae) - Carrot Family
waygrass - see knotweed, prostrate -
wheatgrass - see quackgrass -
whiteman's footprint - see plantain, broadleaf -
whitlowgrass, spring Draba verna Brassicaceae (Cruciferae) - Mustard Family
whitlowwort - see whitlowgrass, spring -
wild rye, Canadian Elymus canadensis Poaceae (Graminae) - Grass Family
willowherb, American Epilobium ciliatum Onagraceae - Evening Primrose Family
willowherb, glanular - willowherb, American -
willowherb, great - see fireweed -
wineberry Rubus phoenicolasius Rosaceae - Rose Family
wingstem Verbesina alternifolia Asteraceae (Compositae) - Aster or Sunflower Family
wintergrass - see bluegrass, annual -
witchgrass Panicum capillare Poaceae (Graminae) - Grass Family
wiregrass - see goosegrass, nimble -
wiregrass - see rush, path -
woodgrass - see indiangrass, yellow -
woodbine - see Virginia creeper -
woodsorrel, creeping Oxalis corniculata Oxalidaceae - Woodsorrel Family
woodsorrel, yellow Oxalis stricta Oxalidaceae - Woodsorrel Family
wormseed - see mexicantea -
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yardgrass - see goosegrass -
yarrow Achillea millefolium Asteraceae (Compositae) - Aster or Sunflower Family
yellow devil - see hawkweed -
yellowcress - see fieldcress, prostrate -
yellowcress, common - see yellowcress, marsh -
yellowcress, marsh Rorippa palustris Brassicaceae (Cruciferae) - Mustard Family
yellow-rattle Rhinanthus minor Scrophulariaceae - Figwort Family
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zizia, golden - see alexanders, golden -
zoysia - see lawngrass, Japanese -

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Number of weeds currently in herbarium: 311
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Plants for Shade: The 2008 Garden Calendar from UMass Extension

 
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