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POISON IVY
DANDILION
OXALIS
NUTGRASS
POISON IVY

MOUSE EAR CHICKWEED
MALLOW
LAMBSQUARTERS
KUDZU VINE

KNOT WEED
HONEY SUCKLE
HENBIT
GROUND IVY

PIGWEED
PENNYWORT
FILAREE
FLORIDAPUSLEY
NUTSEDGE

WILDCARROT
WILD BLACKBERRY
WHITE CLOVER
TANSYRAGWORT
POISON IVY

SHEPHERDSPURSE
SHEEPSORREL
RAGWEED
BINDWEED

EVENING PRIMROSE
POISON OAK
THISTLE
SPURGE		 

QUACKGRASS
POAANNUA ANNUAL BLUEGRASS
GOOSEGRASS
FOXTAIL		 

CRABGRASS
BARNYARDGRASS
BAHIAGRASS
JOHNSONGRASS		 
     
     
     
     
 
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.

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

alyssum, hoary Berteroa incana Brassicaceae (Cruciferae) - Mustard Family
aster, white wood Aster divaricatus Asteraceae (Compositae) - Aster or Sunflower Family
balsam, Himalaya Impatiens glandulifera Balsaminaceae - Touch-me-not Family
barnyardgrass Echinochloa crus-galli Poaceae (Graminae) - Grass Family
bedstraw, smooth Galium mollugo Rubiaceae - Madder Family
beggarticks, devil's Bidens frondosa Asteraceae (Compositae) - Aster or Sunflower
bindweed, field Convolvulus arvensis Convolvulaceae - Morningglory Family
bindweed, hedge Calystegia sepium Convolvulaceae - Morningglory Family
bittercress Cardamine hirsuta Brassicaceae (Cruciferae) - Mustard Family
bittersweet, oriental Celastrus orbiculatus Celastraceae - Stafftree Family
black-eyed susan Rudbeckia hirta Asteraceae (Compositae) - Aster or Sunflower Family
bluegrass, annual Poa annua 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
brome, downy Bromus tectorum Poaceae (Graminae) - Grass Family
buckwheat, wild Polygonum convovulus Polygonaceae - Smartweed or Buckwheat Family
burcucumber Sicyos angulatus Curcurbitaceae - Gourd Family
burdock, common Arctium minus Asteraceae (Compositae) - Aster or Sunflower Family
buttercup, bulbous Ranunculus bulbosus Ranunculaceae - Buttercup Family
carpetweed Mollugo verticillata Aizoaceae - Carpetweed Family
carrot, wild Daucus carota Apiaceae (Umbelliferae) - Carrot Family
cat's ear/false dandelion Hypochaeris radicata Asteraceae (Compositae) -Aster or Sunflower Family
chickweed, common Stellaria media Caryophyllaceae - Pink Family
chickweed, mouseear Cerastium vulgatum Caryophyllaceae - Pink Family
chicory Cichorium intybus Asteraceae (Compositae) - Aster or Sunflower Family
cinquefoil, old field Potentilla simplex Rosaceae - Rose Family
cinquefoil, rough Potentilla norvegica Rosaceae - Rose Family
cinquefoil, silvery Potentilla argentea Rosaceae - Rose Family
cinquefoil, sulfur Potentilla recta L Rosaceae - Rose Family
clearweed Pilea pumila Urticaceae - Nettle Family
clover, rabbitfoot Trifolium arvense Fabaceae (Leguminosae) - Pea or Bean Family
clover, red Trifolium pratense Fabaceae (Leguminosae) - Pea or Bean Family
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
coltsfoot Tussilago farfara Asteraceae (Compositae) - Aster or Sunflower Family
copper-leaf, Virginia Acalypha virginica Euphorbiaceae - Spurge Family
cottonweed Froelichia gracilis Amaranthaceae - Amaranth Family
cowparsnip Heracleum lanatum Apiaceae (Umbelliferae) - Carrot Family
crabgrass, smooth Digitaria ischaemum Poaceae (Graminae) - Grass Family
cucumber, wild Echinocystis lobata Cucurbitaceae - Gourd Family
daisy, oxeye Chrysanthemum leucanthemum Asteraceae (Compositae) - Aster or Sunflower Family
dandelion Taraxacum officinale Asteraceae (Compositae) - Aster or Sunflower Family
dandelion, fall Leontodon autumnalis Asteraceae (Compositae) - Aster or Sunflower Family
dayflower, Asiatic Commelia communis Commelinaceae - Spiderwort Family
deadnettle, red Lamium purpureum Lamiaceae (Labiatae) - Mint Family
dock, broadleaf Rumex obtusifolius Polygonaceae - Smartweed or Buckwheat Family
dock, curly Rumex crispus Polygonaceae - Smartweed or Buckwheat Family
dodder Cuscuta spp. Convolvulaceae - Morningglory Family
dogbane, hemp Apocynum cannabinum Apocynaceae - Dogbane Family
eveningprimrose, common Oenothera biennis Onagraceae - Evening Primrose Family
filaree, redstem Erodium cicutarium Geranium - Geranium Family
fleabane, annual Erigeron annuus Asteraceae (Compositae) - Aster or Sunflower Family
four-o'clock, wild Mirabilis nyctaginea Nyctaginaceae - Four-O'clock Family
foxtail, giant Setaria faberi Poaceae (Graminae) - Grass Family
foxtail, yellow Setaria glauca Poaceae (Graminae) - Grass Family
galinsoga, hairy Galinsoga ciliata Asteraceae (Compositae) - Aster or Sunflower Family
garlic, wild Allium vineale Liliaceae - Lily Family
garlic mustard Alliaria petiolata Brassicaceae (Cruciferae) - Mustard Family
goldenrod, Canada Solidago canadensis Asteraceae (Compositae) - Aster or Sunflower Family
goldenrod, narrowleaf Solidago graminifolia Asteraceae (Compositae) - Aster or Sunflower Family
goldenod, seashore Solidago sempervirens Asteraceae (Compositae) - Aster or Sunflower Family
goosegrass Eleusine indica Poaceae (Graminae) - Grass Family
ground ivy Glechoma hederacea Lamiaceae (Labiatae) - Mint Family
groundsel, common Senecio vulgaris Asteraceae (Compositae) - Aster or Sunflower Family
hawkweed Hieracium pratense Asteraceae (Compositae) - Aster or Sunflower Family
hawksbeard, narrowleaf Crepis tectorum Asteraceae (Compositae) - Aster or Sunflower Family
healall Prunella vulgaris Lamiaceae (Labiatae) - Mint Family
henbit Lamium amplexicaule Lamiaceae (Labiatae) - Mint Family
horsenettle Solanum carolinense Solanaceae - Nightshade Family
horsetail, field Equisetum arvense Equisetaceae - Horsetail Family
horseweed Conyza canadensis Asteraceae (Compositae) - Aster or Sunflower Family
jimsonweed Datura stramonium Solanaceae - Nightshade Family
knapweed, spotted Centaurea maculosa Asteraceae (Compositae) - Aster or Sunflower Family
knotweed, Japanese Polygonum cuspidatum Polygonaceae - Smartweed or Buckwheat Family
knotweed, prostrate Polygonum aviculare Polygonaceae - Smartweed or Buckwheat Family
knotweed, Virginia Tovara virginiana Polygonaceae - Smartweed or Buckwheat Family
lambsquarters, common Chenopodium album Chenopodiaceae - Goosefoot Family
lettuce, biennial Lactuca biennis Asteraceae (Compositae) - Aster or Sunflower Family
lettuce, prickly Lactuca serriola Asteraceae (Compositae) - Aster or Sunflower Family
lettuce, tall Lactuca canadensis Asteraceae (Compositae) - Aster or Sunflower Family
loosestrife, purple Lythrum salicaria Lythraceae - Loosestrife Family
mallow, common Malva neglecta Malvaceae - Mallow Family
mallow, venice Hibicus trionum Malvaceae - Mallow Family
medic, black Medicago lupulina Fabaceae (Leguminosae) - Pea or Bean Family
milkweed, common Asclepias syriaca Asclepiadaceae - Milkweed Family
mugwort Artemisia vulgaris Asteraceae (Compositae) - Aster or Sunflower Family
mullein, common Verbascum thapsus Scrophulariaceae - Figwort Family
mullein, moth Verbascum blattaria Scrophulariaceae - Figwort Family
mustard, tower Arabis glabra Brassicaceae (Cruciferae) - Mustard Family
nightshade, bittersweet Solanum dulcamara Solanaceae - Nightshade Family
nightshade, eastern black Solanum ptycanthum Solanaceae - Nightshade Family
nutsedge, yellow Cyperus esculentus Cyperaceae - Sedge Family
orchardgrass Dactylis glomerata Poaceae (Graminae) - Grass Family
panicum, fall Panicum dichotomiflorum Poaceae (Graminae) - Grass Family
paspalum Paspalum setaceum Poaceae (Graminae) - Grass Family
pearly-everlasting Anaphalis margaritacea Asteraceae (Compositae) - Aster or Sunflower Family
pennycress, field Thlaspi arvense Brassicaceae (Cruciferae) - Mustard Family
pepperweed, field Lepidium campestre Brassicaceae (Cruciferae) - Mustard Family
pepperweed, Virginia Lepidium virginicum Brassicaceae (Cruciferae) - Mustard Family
pigweed, prostrate Amaranthus blitoides Amaranthaceae - Amaranth Family
pigweed, redroot Amaranthus retroflexus Amaranthaceae - Amaranth Family
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
plantain, broadleaf Plantago major Plantaginaceae - Plantain Family
plantain, narrowleaf Plantago lanceolata Plantaginaceae - Plantain Family
poison-ivy Toxicodendron radicans Anacardiaceae - Cashew Family
pokeweed, common Phytolacca americana Phytolaccaceae - Pokeweed Family
purslane, common Portulaca oleracea Portulacaceae - Purslane Family
pussytoes, field Antennaria neglecta Asteraceae (Compositae) - Aster or Sunflower Family
quackgrass Elytrigia repens Poaceae (Graminae) - Grass Family
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
rocket, yellow Barbarea vulgaris Brassicaceae (Cruciferae) - Mustard Family
rush, path Juncus tenuis Juncaceae - Rush Family
salsify, yellow Tragopogon dubius Asteraceae (Compositae) - Aster or Sunflower Family
sandspurry, red Spergularia rubra Caryophyllaceae - Pink Family
shepherd's-purse Capsella bursa-pastoris Brassicaceae (Cruciferae) - Mustard 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
sorrel, red/sheep sorrel Rumex acetosella Polygonaceae - Smartweed or Buckwheat Family
sowthistle, annual Sonchus oleraceus Asteraceae (Compositae) - Aster or Sunflower Family
sowthistle, perennial Sonchus arvensis Asteraceae (Compositae) - Aster or Sunflower Family
sowthistle, spiny Sonchus asper Asteraceae (Compositae) - Aster or Sunflower Family
speedwell, common Veronica officinalis Scrophulariaceae - Figwort Family
speedwell, corn Veronica arvensis Scrophulariaceae - Figwort Family
speedwell, purslane Veronica peregrina Scrophulariaceae - Figwort Family
speedwell, thymeleaf Veronica serpyllifolia Scrophulariaceae - Figwort Family
spurge, spotted Euphorbia maculata Euphorbiaceae - Spurge Family
stiltgrass, Japanese Microstegium vimineum Poaceae (Graminae) - Grass Family
stinkgrass Eragrostis cilianensis Poaceae (Graminae) - Grass Family
St. Johnswort Hypericum perforatum Hyperiacaceae - St. Johnswort Family
strawberry, wild Fragaria virginiana Rosaceae - Rose Family
swallowwort, black Cynanchum nigrum Asclepiadaceae - Milkweed Family
swallowwort, pale Cynanchum rossicum Asclepiadaceae - Milkweed Family
sweetclover, white Melilotus alba Fabaceae (Leguminosae) - Pea or Bean Family
sweetclover, yellow Melilotus offincinalis Fabaceae (Leguminosae) - Pea or Bean Family
tansy Tanacetum vulgare Asteraceae (Compositae) - Aster or Sunflower Family
teasel Dipsacus fullonum Dipsacaceae - Teasel Family
thistle, bull Cirsium vulgare Asteraceae (Compositae) - Aster or Sunflower Family
thistle, Canada Cirsium arvense Asteraceae (Compositae) - Aster or Sunflower 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
trefoil, birdsfoot