| Alder |
Alnus spp. |
small plant
seed head
|
| Amaranth, Grain |
Amaranthus hypochondriacus |
mature flower
flowering plant
|
| Amaranth, Spiny |
Amaranthus spinosus |
young plant
young plant
|
| Aspen |
Populus tremuloides Michx. |
plant
|
| American Beauty Berry |
Callicarparpa americana |
stem/flower/leaf
|
| American Holly |
Ilex opaca |
young plant
|
| Angelica, Purple-stemmed |
Aralia nudicaulis |
plant
|
| Aster |
Aster spp. |
plant
|
| Aster, Flat-topped, white |
Aster umbellatus P. Mill. |
flowers
plant
plant
|
| Aster spp. |
Aster spp. |
flower
flowers
plant
|
| Avocado |
Persea gratissima |
young plant
|
| Barnyardgrass |
Echinochloa crus-galli |
seedling
seed head
leaf w/o ligule
|
| Bayberry |
Myrica pensylvanica Loisel. |
berry
plant
|
| Bearberry |
Arctostaphylos uva-ursi (L.) Sprengl. |
berry
flower
plant
|
| Bedstraw, northern |
Galium boreale L. |
flowers
plant
plants
|
| Bedstraw, catchweed |
Galium aparine |
mature plant
|
| Beggarstick (sticktight) |
Bidens discoidea (T. & G.) Britt. |
flowers
flower
mature plant
|
| Bergamot (horse-mint) |
Monarda menthafolia |
mature plant
flower/leaf
|
| Bindweed, Field (wild morningglory) |
Convolvulus arvensis |
young plant
leaves
leaf/flower
|
| Bindweed, Hedge |
Calystegia sepium |
young plant
mature plant
leaf/flower
|
| Birch |
Betula spp. |
plant
|
| Birdsfoot trefoil |
Lotus corniculatus L. |
flower
plant
leaves/flower
|
| Blackberry, Canada |
|
plant
flower
berry
|
| Blackberry, Trailing (Dewberry) |
Rubus hispidus L. |
berries
leaves
plant
|
| Blackgrass |
Alopecurus myosuroides |
flowering plant
flowers
|
| Black-eyed-susan |
Rudbeckia hirta L. var. pulcherrima Farw. |
flower
flower
small plant
|
| Bluestem, big |
|
flower
|
| Blue vervain |
Verbena hastata |
mature plant
|
| Blue-eyed-grass, little |
Sisyrinchium montanum Greene |
flower
plant
|
| Bluets |
Hedyotis caerulea (L.) Hook. (=Houstonia caerula) |
flower
plant
|
| Boneset |
Eupatorium perfoliatum L. |
flower
plant
|
| Bouncingbet (soapwort) |
Saponaria officinalis |
mature plant
leaves
plant
|
| Brome, Downy (cheatgrass) |
Bromus tectorum |
ligule
seed head
mature plants
leaf sheath
|
| Brome, smooth |
Bromus inermis |
ligule
mature plant
seed head
|
| Brome, Rattlesnake |
Bromus brizaeformis |
seed head
|
| Browneyed Susan |
Rudbeckia hirta |
flowers
|
| Broomrape, Crenate (scalloped broomrape) |
Orobanche crenata |
flowering plant
|
| Broomrape, Single-flower |
Orobanchne uniflora |
flowers
plant
|
| Bryony, white |
Bryonia alba |
plant
|
| Buckwheat |
Polygonaceae |
plant
|
| Buckwheat, wild |
Polygonum convolvulus |
seedling
twining plant
flower
flower
leaf
plant
vine
|
| Bulrush, black |
Scirpus atrovirens Willd. |
plant
seed
|
| Bunchberry |
Cornus canadensis L. |
berry
plant
plants
|
| Bur cucumber |
Sicyos angulatus |
seedling
young plant
leaves
plant
vine
|
| Burdock, Common |
Arctium minus |
mature plant
young plant
w/monarch butterfly
|
| Burdock, Woolly |
Arctium tomentosum MILL |
bur
plant
|
| Buttercup spp. |
Ranunculus spp. |
mature plant
mature plant
plant
plants
seed
|
| Buttercup, Smallflower |
Ranunculus abortivus |
mature plant
|
| Buttercup, Common |
Ranunculus californicus |
mature plant
|
| Cactus (prickly pear) |
Opuntia spp |
mature plant
|
| Campion, Bladder |
Silene vulgaris (Moench) Garcke (=Silene cucubalus) |
flower
plant
|
| Campion, White |
Silene alba |
mature plant
|
| Canarygrass, reed |
Phalaris arundinacea |
ligule/seed head
mature plant
|
| Canker-root |
Coptis trifolia (L.) Salisb. (includes C. groenlandicum) |
flower
plant
|
| Cardinal flower (scarlet lobelia) |
Lobelia cardinalis |
flower head
|
| Carpetweed |
Mollugo verticillata |
mature plant
plant
|
| Castorbean |
Ricinus communis |
mature plant
|
| Catnip |
Nepeta cataria |
mature plant
young plant
flower head
leaf
|
| Cattail |
Typha latifolia |
mature plant
|
| Cherry |
Prunus spp. |
flower
|
| Cheat |
Bromus secalinus |
young plant
young plant
|
| Chickweed, Common |
Stelaria media |
young plant
flowered branch
mature plant
flower
plant
|
| Chickweed, Mouseear |
Cerastium vulgatum L |
flowering plant
plant
flowers
plant
|
| Chicory |
Chicorium intybus |
mature plant
flower
plant
flower
|
| Cinquefoil spp. |
Potentilla spp. |
mature plant
flower
leaves
plant
|
| Cinquefoil, Three-toothed |
Potentilla tridentata Ait. |
flower
plant
|
| Clover, Large-hop |
Trifolium campestre Schreber |
flower
leaves
plant
seed head
|
| Clover, Prairie bush |
Lespedeza leptostachya |
mature plant
|
| Clover, Rabbit-foot |
Trifolium arvense L. |
flower
plant
|
| Clover, Red |
Trifolium pratense L. |
flower
plant
mature plant
|
| Clover, White |
Trifolium repens L. |
flower
plant
flowering plant
|
| Clover, Yellow |
Trifolium agrarium |
flowering plant
flower detail
|
| Cogongrass |
Imperata cylindrica |
field photo
flowering plant
|
| Cockle, Corn |
Agrostemma githago |
flower
seed head
leaf/flower
mature plant
|
| Cockle, Cow |
Vaccaria pyramidata |
flower
|
| Cockle, White |
Silene latifolia Poiret |
flower
|
| Cocklebur, common |
Xanthium strumarium |
seedling
young plant
mature plant
|
| Coltsfoot |
Tussilago farfara |
flower
plants
|
| Compass plant |
Silphium laciniatum |
foilage
|
| Coneflower, purple |
Echinacea rudbeckia |
plant/flower
|
| Coneflower, purple |
Echinacea purpurea |
mature plant
|
| Coneflower, cutleaf |
Rudbeckia laciniata |
leaves
|
| Cornflower |
Centaurea cyanus |
flower
|
| Cowwheat |
Melampyrum lineare Desr. |
flower
plant
|
| Crabgrass, Hairy |
Digitaria sanguinalis |
ligule
mature plant
plant size
|
| Crabgrass, Smooth |
Digitaria ischaemum |
mature plant
|
| Creeping charlie (ground ivy) |
Glechoma hederacea |
plant
leaves
leaf size
|
| Cupplant |
Silphium perfoliatum |
plant
|
| Cudweed, low |
Gnaphalium uliginosum L. |
flower
plant
|
| Daisy, Ox-eyed |
Leucanthemum vulgare Lam. (=Chrysanthemum leucanthemum) |
flower
plant
|
| Dandelion |
Taraxacum officinale |
flowering plant
young plant
leaf/seed head size
flower
plant
|
| Dock, broadleaf |
Rumex obtusifolius |
leaf
|
| Dock, curly (sour dock) |
Rumex crispus |
seedling
young plant
mature plant
seed heads
plant
plants
|
| Dodder, field (doddergrass) |
Cuscuta sp. |
mature plant
plant
|
| Dogbane, Hemp (indian hemp) |
Apocynum cannabinum |
young plant
mature plant
young plant
plant part
flower
|
| Dogbane, Spreading |
Apocynum androsaemifolium L. |
flower
plant
|
| Elderberry |
Sambucus canadensis |
mature plant
flower
berries
flower
plant
|
| Evening-primrose, yellow |
Oenothera biennis L. |
flower
plant
seed
mature plant
plant (top view)
|
| Fescue |
Festuca arundinacea |
leaves
|
| Fern, Bracken (fiddlehead) |
Pteridium aquilinum (L.) Kuhn. |
frond
plants
small plants
mature plant
|
| Fern, Hay-scented |
Dennstaedtia punctilobula (Michx.) Moore |
plant
plants
|
| Fern, Interrupted |
Osmunda claytonia L. |
plants
|
| Fern, Sensitive |
Onoclea sensibilis L. |
plant
|
| Fern, Sweet |
Comptonia peregrina (L.) L. Coult. |
flower
plant
|
| Fir, balsam |
Abies balsamea (L.) Mill. |
plant
|
| Fleabane, Canada |
Conyza canadensis (L.) Cronq. |
flowers
plants
|
| Fleabane, Daisy |
Erigeron strigosus |
mature plant
|
| Fleabane, Rough |
Erigeron strigosus |
young plant
flower
mature plant part
flowers
flower
plant
|
| Fireweed |
Epilobium angustifolium L. |
flower
flowers
plant
|
| Forget-me-not |
Myosotis scorpioides L. |
flowers
|
| Four-o-clock, wild |
Mirabilis nyctaginea |
flowering plants
flower
young plant
|
| Foxglove |
Digitalis purpurea |
mature plant
|
| Foxtail-barley |
Hordeum jubatum |
mature plant
mature plant
|
| Foxtail, Bristly (bur bristlegrass) |
Setaria vericillata |
mature plant
|
| Foxtail, Giant |
Setaria faberi |
ligule
young plant
mature plant
seed
giant foxtail split seedhead
|
| Foxtail, Giant green |
Setaria viridis |
ligule
mature plant
|
| Foxtail, Meadow |
Alopecurus pratensis |
mature plant
seed heads
|
| Foxtail, Yellow |
Setaria lutescens |
ligule
matureplant
seed head
|
| Garlic, wild |
Allium vineale |
mature plants
bulb and seed head
seed head
compared to Star of Bethlehem
|
| Goatsbeard, meadow |
Tragopogon pratensis L. |
flower
plant
plants
seed head
|
| Goldenrod, Narrowleaf |
Euthamia graminifolia (L.) Nutt. (Solidago graminifolia) |
flower
plant
plants
small plants
|
| Goldenrod sp. |
Solidago sp. |
mature plant
mature plant
flowers
plants
|
| Goosegrass |
Eleusine indica |
flowering plant
|
| Goutweed |
Aegopodium podagraria variegatum |
plant
|
| Grape, wild |
Vitis sp. |
mature plant
|
| Ground-pine |
|
plant
|
| Groundcherry sp. |
Physalis sp. |
seedling
seed pod
plant
flower
flowering plant
seed pod cross-section
|
| Groundcherry, Clammy |
Physalis heterophylla |
young plant
|
| Groundcherry, Smooth |
Physalis subglabrata |
mature plant
plant parts
|
| Ground ivy (see also creeping charlie) |
Glechoma hederacea |
frosted plants
flower
|
| Groundsel, Clammy |
Senecio viscosus L. |
flower
plant
|
| Harebell, Common |
Campanula rotundifolia L. |
flowers
plants
|
| Hawkweed, Orange |
Hieracium aurantiacum L. |
flower
plants
|
| Hawkweed sp. |
Hieracium spp. |
bud
flowers
plants
|
| Heal-all |
Prunella vulgaris L. |
flower
plant
|
| Hemlock, Poison |
Coniummaculatum sp. |
mature plant
flower
stem
|
| Hemlock, Water |
Cicuta maculata |
plant part
|
| Hemp (marijuana) |
Cannabis sativa |
mature plant
|
| Hemp-sesbania (coffeebean, indigoweed) |
Sesbania exaltata |
flowering plant
|
| Hempnettle |
Galeopsis tetrahit L. |
flower
seed capsule
seedling
small plant
|
| Henbane, black |
Hyoscyamus niger |
flower
|
| Henbit |
Lamium amplexicaule |
seedling
mature plant
|
| Honey locust (honey, coffee bean tree) |
Gleditsia triacanthos |
plant
|
| Honeysuckle, bush |
Diervilla lonicera Mill. |
flower
flowers
plants
seed capsules
|
| Hophornbeam copperleaf |
Acalypha ostryifolia |
mature plant
|
| Horehound, tuberous water |
Lycopus uniflorus Michx. |
flowers
plants
|
| Horsenettle |
Solanum carolinense |
flower/seeds
plant
|
| Horseweed (Marestail) |
Conyza canadensis |
young plant
mature plant
leaves
flowering plant
|
| Horsetail |
Equisetum arvense |
plant
plants
|
| Hydranga |
Hydrangae spp. |
mature plant
|
| Indiangrass |
Sorghastrum nutans |
flower/seed head
|
| Iris |
Iris sp. |
flower
plant
|
| Ivy, English |
Hedera helix |
mature plant
|
| Jersulem artichoke |
Helianthus tuberosus |
young plant
mature plant
|
| Jimsonweed |
Datura stramonium |
seedling
young plant
mature plant
|
| Joe-pye-weed, spotted |
Eupatorium maculatum L. |
flower
plant
|
| Johnsongrass |
Sorghum halepense |
ligule
seedling
mature plant
seed head
|
| Knapweed, black |
Centaurea nigra L. |
flower
flowers
small plant
|
| Knotweed |
Polygonum aviculare |
leaf/stem size
|
| Kochia |
Kochia scoparia |
ligule
mature plant
|
| Labrador-tea |
Ledum groenlandicum Oeder |
flower
plants
under leaf
|
| Lambsquarters, common |
Chenopodium album |
young plant
seedling
plant
young plant
mature plant
flowering plant
|
| Larch, black |
Larix laricina |
plants
small plant
|
| Lettuce, Canada |
Lactuca canadensis L. |
flower
plant
seeds
|
| Lettuce, Prickly |
Lactuca serriola |
mature plant
plant part
mature plant
stem detail
|
| Lichens |
|
plants
|
| Lily-of-the-valley, false |
Maianthemum canadense Desf. |
berries
flower
plants
|
| Lions-paw |
Prenanthes trifoliata (Cass.) Fern. |
flower
plant
|
| Loosestrife, swamp |
Lysimachia terrestris (L.) BSP |
flower
plant
small plant
|
| Loosestrife, purple |
Lythrum salicaria |
mature plant
plant parts
|
| Lupine spp. |
Lupinus spp. |
mature plant
flower
plant
leaf/flower
|
| Lupine, Large-leaved |
Lupinus polyphyllus Lindl. |
flower
plants
small plant
|
| Mallow, Common (wild geranium, roundleaf mallow) |
Malva neglecta |
flowers and flower buds
flowering plant
flowering plant
|
| Mallow sp. |
Malva sp. |
flower
plant
|
| Mallow, Venice (flower-of-an-hour) |
Hibiscus trionum |
seedling
young plant
mature plant
|
| Maple, Red |
Acer rubrum L. |
plant
|
| Maple, Sugar |
Acer saccharum L. |
plant
small plant
|
| Meadow-rue |
Thalictrum pubescens Pursh |
flower
leaves
plant
|
| Meadowsweet |
Spiraea spp. |
flower
plant
flower head
flowers
plant (2)
plant (3)
|
| Medic, black |
Medicago lupulina |
mature plant
flower
plants
|
| Milkweed, Common |
Asclepias syriaca |
young plant
young plant
leaves
plant
butterfly/seed pods
|
| Milkweed, Honeyvine (climbing milkweed) |
Ampelamus albidus |
leaf/stem
leaf/stem size
mature plant
seedling
flowering plant
flowering plant
|
| Milkweed, Swamp |
Asclepias incarnata L. |
flower bud
flower
plants
pod
|
| Milkweed, Whorled |
Asclepias verticillata |
plant
|
| Millet, wild proso |
Panicum miliaceum |
ligule
seedling
young plant
|
| Mint, field |
Mentha arvensis L. |
flower
leaves
|
| Morningglory sp. |
Ipomoea sp. |
seedling
young plant
twining plant
|
| Morningglory, Bigroot (wild sweet pototoe) |
Ipomoea pandurata |
mature plant
tubers/leaves
roots
|
| Morningglory, Ivyleaf |
Ipomoea hederacea |
young plant
leaf size
|
| Morningglory, Tall & ivyleaf |
Ipomoea purpurea/Ipomea hederacea |
comparison photo
|
| Morningglory, Tall |
Ipomoea purpurea |
seedling
young plant
flowering plant
morningglory in corn
|
| Motherwort |
Leonurus cardiaca |
mature plant
|
| Muhley, wirestem |
Muhlenbergia frondosa |
root
plant
root/stem part
|
| Mullein, common (candlewick) |
Verbascum thapsus L. |
flower
plant
mature plant
|
| Mustard, Mustard spp. |
Crusiferae spp. |
mature plant
mature plant
plant
|
| Mustard, Tansy (pinole) |
Descurainia pinnata |
mature plant
|
| Mustard, Wild |
Brassica kaber |
mature plant
stem
|
| Narcissus, polyanthus |
Narcissus tazetta |
flower
|
| Narcissus tazetta |
Narcissus sp. |
mature plant and wheat
|
| Nettle, stinging |
Urtica dioica |
young plant
young plant
|
| Nightshade, Bitter |
Solanum dulcamara |
berries
flowers
leaves
|
| Nightshade, Black |
Solanum nigrum |
seedling
young plant
leaves
seeds w/soybeans
|
| Nightshade, Eastern black |
Solanum ptycanthum |
seedling
young plant
flower
|
| Nutsedge, yellow |
Cyperus esculentus |
young plant
seedling
plant
stem/flower detail
|
| Oatgrass, poverty |
Danthonia spicata (L.) Beauv. ex Roem. & Schult. |
field display
ligule
|
| Ohio buckeye |
Aesculus glabra |
mature tree
|
| Onion, wild |
Allium textile |
plant
|
| Orchardgrass |
Dactylis glomerata |
seed head
plant
|
| Orchid, white-fringed |
Platanthera blephariglottis (Willd.) Lindl. |
flower
flowers
plant
|
| Oxalis (woodsorrel) |
Oxalis stricta |
seed head
mature plant
flower
plant
flowers
plants
|
| Panicum, fall |
Panicum dichotomiflorum |
ligule
young plant
mature plant
|
| Parsnip, wild |
Pastinaca sativa |
young plant
mature plant
|
| Pearly-everlasting |
Anaphalis margartacea (L.) Benth. & Hoofe f. |
flower
plant
small plant
|
| Pennycress, field |
Thlaspi arvense |
young plant
mature plant
|
| Pepperweed, Virginia |
Lepidium virginicum |
mature plant
flowering plant
|
| Philodendron |
Philodendron scandens |
young plant
|
| Philodendron, splitleaf |
Philodendron laciniatum |
young plant
|
| Phlox spp. |
mature plant |
Phlox
|
| Pigweed spp. |
Amaranthus spp. |
seedling
seedlings
mature plant
|
| Pigweed, Prostrate |
Amaranthus blitoides |
young plant
mature plant
|
| Pigweed, Redroot |
Amaranthus retroflexus |
seedling
plant
mature plant
flower
plant
small plant
|
| Pigweed, Smooth |
Amaranthus hybridus |
young plant
|
| Pigweed, Smooth & redroot |
Amaranthus hybridus/retroflexus |
flower comparison photo
|
| Pigweed, Tumble |
Amaranthus albus |
mature plant
mature plant
|
| Pineappleweed |
Matricaria discoidea DC. (= M. matricarioides) |
flower
plant
plants
plant (spp)
Pine spp
mature plant
|
| Plantain, Broadleaf |
Plantago major |
plant parts
plant
flower
plant
|
| Plantain, Narrow-leaf |
Plantago lanceolata L. |
flower
leaves
plant
mature plant
|
| Poison ivy |
Rhus radicans |
young plant
young plant
|
| Pokeweed, commong |
Phytolacca americana |
young plant
|
| Poppy |
Papaver dubium |
flower
|
| Prairiedock |
Silphium terebinthinaceum |
leaves
|
| Purslane (purslane bread) |
Portulaca oleracea |
seedling
young plant
mature plant
seed and pod
|
| Purslane speedwell |
Veronica peregrina |
mature plant
|
| Quackgrass |
Agropyron repens |
ligule
mature plant
plant
flower head
flower head close-up
|
| Queen-Annes-lace (wild carrot) |
Daucus carota |
mature plant
plant parts
flower
|
| Radish, wild |
Raphanus raphanistrum L. |
flower
flowers
plant
|
| Ragweed, Common |
Ambrosia artemisiifolia |
seedling
young plant
mature plant
leaf
plant
flower
plant
small plant
|
| Ragweed, Giant (horseweed) |
Ambrosia trifida |
seedling
young plant
mature plant in field
young plant
mature plant
leaf size
|
| Ragwort, tansy |
Senecio jacobaea L. |
flower
plant
|
| Raspberry, red |
Rubus idaeus L. var strigosus (Michx.) Maxim. |
flower
plant
|
| Rattlebox |
Crotalaria sagittalis |
mature plant
flower
plant part
|
| Redstem filaree |
Erodium cicutarium |
seedling
|
| Redtop |
Agrostis alba |
mature seed head
|
| Rhododendron, Canadian |
Rhododendron canadense (L.) Torr. |
flower
plant
|
| Rocket, yellow |
Barbarea vulgaris |
flowering plant
flower
|
| Rose, wild |
Rosa carolina L. |
fruit (of common wild)
flower
plant
|
