Basic steps:
  1. Answer one or more questions on right by clicking checkboxes. It's okay to check multiple boxes. Then click any 'search' button.
  2. Results appear on left. Click the 'simplify' button to get more questions.
  3. Repeat steps 1 and 2, narrowing down the possibilities.
  4. A 'COMPARE IMAGES' link appears on left when under 100 kinds match. Use this to compare kinds.
Click Restart to search again.
Click Guides to list other guides.
Click here if you're a new user.

Discover Life 191 kinds match in US, ME, York, Shoals Marine Laboratory:
Achillea millefolium  [popup]
Common yarrow...
Allium schoenoprasum  [popup]
Wild chives...
Amaranthus retroflexus  [popup]
Redroot amaranth...
Ambrosia artemisiifolia  [popup]
Annual ragweed
Anagallis arvensis  [popup]
Scarlet pimpernel
Anemone quinquefolia  [popup]
Wood anemone
Aquilegia canadensis  [popup]
Red columbine
Arctium minus  [popup]
Lesser burdock...
Argentina egedii  [popup]
Pacific silverweed
Arisaema triphyllum  [popup]
Jack in the pulpit...
Armoracia rusticana  [popup]
Horseradish
Artemisia vulgaris  [popup]
Common wormwood
Asclepias syriaca  [popup]
Common milkweed
Asparagus officinalis  [popup]
Garden asparagus...
Atriplex prostrata  [popup]
Triangle orache
Barbarea vulgaris  [popup]
Garden yellowrocket...
Bidens cernua  [popup]
Nodding beggartick
Bidens connata  [popup]
Purplestem beggarticks
Bidens frondosa  [popup]
Devils beggartick
Blephilia hirsuta  [popup]
Hairy pagoda-plant
Brassica nigra  [popup]
Black mustard
Cakile edentula  [popup]
American searocket
Calystegia sepium  [popup]
Hedge false bindweed...
Capsella bursa-pastoris  [popup]
Shepherds purse...
Cerastium fontanum  [popup]
Common mouse-ear chickweed
Cerastium tomentosum  [popup]
Snow in summer
Chelidonium majus  [popup]
Celandine
Chenopodium album  [popup]
Lambsquarters...
Chenopodium glaucum  [popup]
Oakleaf goosefoot
Chenopodium rubrum  [popup]
Red goosefoot...
Cichorium intybus  [popup]
Chicory
Circaea lutetiana  [popup]
Broadleaf enchanters nightshade...
Cirsium arvense  [popup]
Canada thistle
Cirsium vulgare  [popup]
Bull thistle
Convallaria majalis  [popup]
European lily of the valley
Convolvulus arvensis  [popup]
Field bindweed
Conyza canadensis  [popup]
Canadian Horseweed...
Cuscuta gronovii  [popup]
Scaldweed...
Daucus carota  [popup]
Queen Annes lace
Epilobium ciliatum  [popup]
Fringed willowherb...
Epilobium coloratum  [popup]
Purpleleaf willowherb
Epilobium hirsutum  [popup]
Codlins and cream...
Epilobium palustre  [popup]
Marsh willowherb
Erechtites hieraciifolia  [popup]
American burnweed...
Erigeron annuus  [popup]
Eastern daisy fleabane
Erythronium americanum  [popup]
Dogtooth violet...
Euthamia graminifolia  [popup]
Flat-top goldentop
Fallopia scandens  [popup]
Climbing false-buckwheat...
Fragaria vesca  [popup]
Woodland strawberry
Fragaria virginiana  [popup]
Virginia strawberry
Galanthus nivalis  [popup]
Snowdrop
Galeopsis bifida  [popup]
Splitlip hempnettle
Galinsoga quadriradiata  [popup]
Shaggy soldier
Galium aparine  [popup]
Stickywilly...
Galium asprellum  [popup]
Rough Bedstraw
Galium tinctorium  [popup]
Stiff Marsh Bedstraw...
Galium trifidum  [popup]
Threepetal Bedstraw
Geranium robertianum  [popup]
Robert geranium
Glaux maritima  [popup]
Sea milkwort
Glechoma hederacea  [popup]
Ground ivy...
Gnaphalium uliginosum  [popup]
Marsh cudweed
Hemerocallis fulva  [popup]
Orange daylily...
Heracleum maximum  [popup]
Common cowparsnip...
Hesperis matronalis  [popup]
Dames rocket
Hieracium caespitosum  [popup]
Meadow hawkweed
Hieracium canadense  [popup]
Canadian hawkweed
Houstonia caerulea  [popup]
Azure bluet...
Humulus lupulus  [popup]
Common hop
Hylotelephium telephium  [popup]
Witchs moneybags...
Hypericum boreale  [popup]
Northern St Johnswort
Hypericum canadense  [popup]
Lesser Canadian St Johnswort
Hypericum perforatum  [popup]
Common St Johnswort...
Impatiens capensis  [popup]
Jewelweed
Iris versicolor  [popup]
Harlequin blueflag...
Lactuca biennis  [popup]
Tall blue lettuce
Lactuca serriola  [popup]
Prickly lettuce
Lathyrus japonicus  [popup]
Beach pea
Lemna minor  [popup]
Common duckweed...
Leontodon autumnalis  [popup]
Fall dandelion...
Lepidium ruderale  [popup]
Roadside pepperweed
Lepidium virginicum  [popup]
Virginia pepperweed
Leucanthemum vulgare  [popup]
Oxeye daisy...
Ligusticum scoticum  [popup]
Scottish licorice-root
Limonium carolinianum  [popup]
Lavender thrift...
Lindernia dubia  [popup]
Yellowseed false pimpernel
Ludwigia palustris  [popup]
Marsh Seedbox...
Lycopus americanus  [popup]
American Water Horehound
Lycopus uniflorus  [popup]
Northern bugleweed
Lythrum hyssopifolium  [popup]
Hyssop loosestrife...
Lythrum salicaria  [popup]
Purple loosestrife
Maianthemum canadense  [popup]
Canada mayflower...
Maianthemum racemosum  [popup]
Feathery false lily of the valley...
Maianthemum stellatum  [popup]
Starry false lily of the valley...
Malva neglecta  [popup]
Common mallow
Matricaria discoidea  [popup]
Disc mayweed
Medicago lupulina  [popup]
Black medick
Melilotus officinalis  [popup]
Yellow sweetclover...
Mentha arvensis  [popup]
Wild mint
Moehringia lateriflora  [popup]
Bluntleaf sandwort
Nepeta cataria  [popup]
Catnip
Nuttallanthus canadensis  [popup]
Canada toadflax...
Oenothera biennis  [popup]
Common evening primrose
Orobanche uniflora  [popup]
Oneflowered broomrape...
Oxalis stricta  [popup]
Common yellow oxalis...
Plantago lanceolata  [popup]
Narrowleaf plantain
Plantago major  [popup]
Common plantain
Plantago maritima  [popup]
Goose tongue
Polygonatum biflorum  [popup]
Smooth Solomons Seal...
Polygonatum pubescens  [popup]
Hairy Solomons seal...
Polygonum amphibium  [popup]
Water knotweed...
Polygonum aviculare  [popup]
Prostrate knotweed...
Polygonum buxiforme  [popup]
Box knotweed
Polygonum hydropiper  [popup]
Marshpepper knotweed...
Polygonum lapathifolium  [popup]
Curlytop knotweed...
Polygonum pensylvanicum  [popup]
Pennsylvania smartweed...
Polygonum persicaria  [popup]
Spotted ladysthumb...
Polygonum punctatum  [popup]
Dotted smartweed...
Portulaca oleracea  [popup]
Little hogweed
Potentilla argentea  [popup]
Silver cinquefoil
Potentilla gracilis  [popup]
Slender cinquefoil
Potentilla norvegica  [popup]
Norwegian cinquefoil
Potentilla recta  [popup]
Sulphur cinquefoil
Potentilla simplex  [popup]
Common cinquefoil
Prenanthes altissima  [popup]
Tall rattlesnakeroot
Prenanthes trifoliolata  [popup]
Gall of the earth...
Pseudognaphalium obtusifolium  [popup]
Rabbit-tobacco...
Ranunculus abortivus  [popup]
Littleleaf buttercup
Ranunculus acris  [popup]
Tall buttercup
Ranunculus bulbosus  [popup]
St Anthonys turnip
Ranunculus repens  [popup]
Creeping buttercup
Ranunculus sceleratus  [popup]
Cursed buttercup
Raphanus raphanistrum  [popup]
Wild radish
Rorippa palustris  [popup]
Bog yellowcress
Rubus allegheniensis  [popup]
Allegheny blackberry...
Rumex acetosella  [popup]
Common sheep sorrel
Rumex crispus  [popup]
Curly dock
Rumex obtusifolius  [popup]
Bitter dock
Rumex pallidus  [popup]
Seaside dock
Sagina procumbens  [popup]
Birdeye pearlwort
Salicornia depressa  [popup]
Virginia glasswort
Salsola kali  [popup]
Russian thistle
Scutellaria galericulata  [popup]
Marsh skullcap
Sedum acre  [popup]
Goldmoss stonecrop
Sedum kamtschaticum  [popup]
Orange stonecrop
Senecio jacobaea  [popup]
Stinking willie
Silene dioica  [popup]
Red catchfly
Silene latifolia  [popup]
Bladder campion
Sisymbrium altissimum  [popup]
Tall tumblemustard
Sisymbrium officinale  [popup]
Hedgemustard
Sisyrinchium montanum  [popup]
Strict blue-eyed grass...
Smilax herbacea  [popup]
Smooth carrionflower
Smilax rotundifolia  [popup]
Roundleaf greenbrier
Solanum dulcamara  [popup]
Climbing nightshade
Solidago canadensis  [popup]
Canada goldenrod
Solidago juncea  [popup]
Early goldenrod
Solidago rugosa  [popup]
Wrinkleleaf goldenrod
Solidago sempervirens  [popup]
Seaside goldenrod
Sonchus arvensis  [popup]
Field sowthistle
Sonchus asper  [popup]
Spiny sowthistle
Sonchus oleraceus  [popup]
Common sowthistle
Spergularia rubra  [popup]
Red sandspurry...
Spergularia salina  [popup]
Salt sandspurry...
Stellaria graminea  [popup]
Grass-like starwort
Stellaria media  [popup]
Common chickweed
Symphyotrichum novi-belgii  [popup]
New York aster...
Symphyotrichum praealtum  [popup]
Willowleaf aster...
Symphyotrichum subulatum  [popup]
Eastern annual saltmarsh aster...
Tanacetum vulgare  [popup]
Common tansy
Taraxacum officinale  [popup]
Common dandelion
Teucrium canadense  [popup]
Canada germander
Triadenum virginicum  [popup]
Virginia marsh St Johnswort
Trientalis borealis  [popup]
Starflower...
Trifolium pratense  [popup]
Red clover
Trifolium repens  [popup]
White clover
Triglochin maritima  [popup]
Seaside arrowgrass...
Typha angustifolia  [popup]
Narrowleaf cattail
Typha latifolia  [popup]
Broadleaf cattail...
Urtica dioica  [popup]
Stinging nettle...
Vaccinium angustifolium  [popup]
Lowbush Blueberry
Verbascum thapsus  [popup]
Common mullein
Veronica arvensis  [popup]
Corn speedwell
Veronica peregrina  [popup]
Neckweed
Veronica scutellata  [popup]
Skullcap speedwell
Veronica serpyllifolia  [popup]
Thymeleaf speedwell
Vicia cracca  [popup]
Bird vetch
Vicia sativa  [popup]
Garden vetch
Vicia villosa  [popup]
Winter vetch
Viola lanceolata  [popup]
Bog white violet
Viola sororia  [popup]
Common blue violet...
Xanthium strumarium  [popup]
Rough cocklebur
Zostera marina  [popup]
Seawrack...


REMAINING (number with state)
Division
 Dicotyledoneae (170)
 Monocotyledoneae (21)
Family
 Asteraceae (40)
 Polygonaceae (13)
 Brassicaceae (12)
 Liliaceae (11)
 Caryophyllaceae (10)
 Lamiaceae (9)
 Rosaceae (9)
 Fabaceae (8)
 Onagraceae (7)
 Ranunculaceae (7)
 Scrophulariaceae (7)
 Chenopodiaceae (6)
 Rubiaceae (5)
 Clusiaceae (4)
 Apiaceae (3)
 Crassulaceae (3)
 Plantaginaceae (3)
 Primulaceae (3)
 Convolvulaceae (2)
 Iridaceae (2)
 Lythraceae (2)
 Smilacaceae (2)
 Typhaceae (2)
 Violaceae (2)
 Amaranthaceae (1)
 Araceae (1)
 Asclepiadaceae (1)
 Balsaminaceae (1)
 Cannabaceae (1)
 Cuscutaceae (1)
 Ericaceae (1)
 Geraniaceae (1)
 Juncaginaceae (1)
 Lemnaceae (1)
 Malvaceae (1)
 Orobanchaceae (1)
 Oxalidaceae (1)
 Papaveraceae (1)
 Plumbaginaceae (1)
 Portulacaceae (1)
 Potamogetonaceae (1)
 Solanaceae (1)
 Urticaceae (1)
Flower attachment
 Stalk erect (2)
 Stalk hanging (2)
Flower cluster
 Few (93)
 Spike (71)
 Loose (38)
 Ball (24)
 Single (23)
 Flat (7)
Flower color, main
 White (80)
 Yellow, orange (64)
 Red, pink (41)
 Blue, purple (39)
 Green, transparent (31)
 Maroon, brown, black (5)
Flower color, secondary
 None (21)
 Red, pink (9)
 Yellow, orange (7)
 Green (3)
 Blue, purple (2)
 Maroon, brown, black (2)
 White (2)
Flower group, number of flowers
 10 - 20 (3)
 20 - 30 (3)
 3 - 5 (3)
 30 - 40 (3)
 40 - 50 (2)
 50 - 60 (2)
 2 (1)
 5 - 10 (1)
Flower longest dimension in cm
 Under 1 (25)
 1 - 2 (12)
 2 - 3 (4)
 3 - 4 (3)
 4 - 5 (1)
Flower on stalk
 Yes (9)
 No (3)
Flower petal length in mm
 4-10 (27)
 1-3 (20)
 10-20 (15)
 20-30 (5)
 Over 30 (4)
 Under 1 (4)
Flower petal number
 5 (75)
 Over 6 (44)
 4 (32)
 0 or indistinct (31)
 6 (22)
 1 - 2 (11)
 3 (2)
Flower petal shape
 Clawed at base (6)
 Flat (6)
 Curved inward (5)
 Fused (3)
 Cup or hood (1)
 Curved back (1)
Flower petal tip
 Rounded (6)
 Split or notched (5)
 Pointed (4)
 Toothed (2)
Flower petal-sepal ratio
 Petals longer than sepals (10)
 Petals as long as sepals (3)
 Sepals longer than petals (1)
Flower pistil, ovary position relative to petal/sepal base
 Below (2)
 Above (1)
Flower pistil, style branches
 3 (2)
 4 (1)
Flower pistil, style number
 3 (2)
 1 (1)
Flower position
 Apical, tip of plant (9)
 Axillary, at base of leaves (4)
Flower sepal color
 Green (11)
 Yellow (1)
Flower sepal number
 4 (7)
 5 (3)
Flower shape
 Rayed (17)
 Cup (7)
 Bell (4)
 Grouped (4)
 Other (4)
 Hooded (2)
 Ballooned (1)
Flower stamen number
 6 (16)
 2 (4)
 9 - 10 (4)
 3 (3)
 4 (2)
 5 (1)
 Over 10 (1)
Flower stamens or carpels showy
 Not showy (4)
 Distinctly colored (2)
 Fat (2)
 Frilly (2)
 Larger than petals (1)
Flower symmetry
 Radial (164)
 Bilateral (40)
Fruit beak
 Absent (3)
 Round (3)
Fruit color
 Green (11)
 Brown/maroon (6)
 Red/pink (1)
Fruit cross section
 0 edge, round (7)
 2 edges, round (3)
 2 edges, flattened (2)
Fruit position
 Spreading (4)
 Close to stem (2)
Fruit seed number
 1 (3)
 2 (2)
 5 - 10 (2)
 3 (1)
 4 (1)
Fruit shape
 Elongated (11)
 Coin-like (2)
 Curved (2)
 Round (2)
 Other (1)
 Sectioned (1)
Fruit size ratio
 Longer than wide (6)
 Wide as long (2)
Fruit size, length in cm
 Under 0.5 (4)
 1-2 (3)
 0.5-1 (2)
 4-8 (1)
 8-16 (1)
Fruit size, width in mm
 1-3 (4)
 3-5 (4)
 Under 1 (2)
 5-10 (1)
Fruit texture
 Smooth (8)
 Hairy (2)
 Papery (2)
 Spiny (1)
Fruit tip shape
 Point (4)
 Notch (2)
Genus
 Polygonum (8)
 Potentilla (5)
 Ranunculus (5)
 Epilobium (4)
 Galium (4)
 Rumex (4)
 Solidago (4)
 Veronica (4)
 Bidens (3)
 Chenopodium (3)
 Hypericum (3)
 Maianthemum (3)
 Plantago (3)
 Sonchus (3)
 Symphyotrichum (3)
 Vicia (3)
 Cerastium (2)
 Cirsium (2)
 Fragaria (2)
 Hieracium (2)
 Lactuca (2)
 Lepidium (2)
 Lycopus (2)
 Lythrum (2)
 Polygonatum (2)
 Prenanthes (2)
 Sedum (2)
 Silene (2)
 Sisymbrium (2)
 Smilax (2)
 Spergularia (2)
 Stellaria (2)
 Trifolium (2)
 Typha (2)
 Viola (2)
 Achillea (1)
 Allium (1)
 Amaranthus (1)
 Ambrosia (1)
 Anagallis (1)
 Anemone (1)
 Aquilegia (1)
 Arctium (1)
 Argentina (1)
 Arisaema (1)
 Armoracia (1)
 Artemisia (1)
 Asclepias (1)
 Asparagus (1)
 Atriplex (1)
 Barbarea (1)
 Blephilia (1)
 Brassica (1)
 Cakile (1)
 Calystegia (1)
 Capsella (1)
 Chelidonium (1)
 Cichorium (1)
 Circaea (1)
 Convallaria (1)
 Convolvulus (1)
 Conyza (1)
 Cuscuta (1)
 Daucus (1)
 Erechtites (1)
 Erigeron (1)
 Erythronium (1)
 Euthamia (1)
 Fallopia (1)
 Galanthus (1)
 Galeopsis (1)
 Galinsoga (1)
 Geranium (1)
 Glaux (1)
 Glechoma (1)
 Gnaphalium (1)
 Hemerocallis (1)
 Heracleum (1)
 Hesperis (1)
 Houstonia (1)
 Humulus (1)
 Hylotelephium (1)
 Impatiens (1)
 Iris (1)
 Lathyrus (1)
 Lemna (1)
 Leontodon (1)
 Leucanthemum (1)
 Ligusticum (1)
 Limonium (1)
 Lindernia (1)
 Ludwigia (1)
 Malva (1)
 Matricaria (1)
 Medicago (1)
 Melilotus (1)
 Mentha (1)
 Moehringia (1)
 Nepeta (1)
 Nuttallanthus (1)
 Oenothera (1)
 Orobanche (1)
 Oxalis (1)
 Persicaria (1)
 Portulaca (1)
 Pseudognaphalium (1)
 Raphanus (1)
 Rorippa (1)
 Rubus (1)
 Sagina (1)
 Salicornia (1)
 Salsola (1)
 Scutellaria (1)
 Senecio (1)
 Sisyrinchium (1)
 Solanum (1)
 Tanacetum (1)
 Taraxacum (1)
 Teucrium (1)
 Triadenum (1)
 Trientalis (1)
 Triglochin (1)
 Urtica (1)
 Vaccinium (1)
 Verbascum (1)
 Xanthium (1)
 Zostera (1)
Habitat
 Terrestrial (10)
 Aquatic (5)
 Near water (4)
Leaf / leaflet shape
 Wider near middle (91)
 Linear (48)
 Lobed (47)
 Wider near base (38)
 Heart/round (18)
 Wider near tip (17)
 Scale-like or absent (3)
Leaf / leaflet tip shape
 Pointed (5)
 Notched (2)
 Round (2)
Leaf arrangement
 Alternate (120)
 Opposite (49)
 Basal (31)
 Whorled (11)
 Absent at flowering (2)
Leaf base shape
 Narrow (5)
 Heart or clasping (2)
 Squared (1)
 Wide or oval (1)
Leaf blade length in cm
 5 - 10 (70)
 1 - 5 (68)
 10 - 30 (62)
 30 - 50 (13)
 Under 1 (13)
 50 - 70 (2)
 70 - 100 (2)
 Over 100 (1)
Leaf blade margin division
 Entire (11)
 Toothed, small (8)
 Lobed shallowly (1)
Leaf division
 Simple: is not divided (160)
 Compound: pinnate 1 time (19)
 Compound: 2- or 3-parted (17)
 Compound: Palmate (8)
 Compound: pinnate 2 times (5)
 Absent at flowering (2)
Leaf hair type
 Undivided (8)
 Divided once (1)
Leaf lobe number
 1 (2)
 3 (2)
 Over 5 (1)
Leaf margin
 Smooth (10)
 Toothed (8)
 Lobed (4)
 Hairy (2)
 Wavy (2)
 Scalloped/ Crenate (1)
 Thorny (1)
Leaf position
 Alternate (9)
 Opposite (4)
Leaf stalk present
 Yes (5)
 Only lower leaves (2)
 No (1)
Leaf stalk texture
 Smooth (7)
 Hairy (4)
Leaf thickness
 Thin (5)
 Very fleshy, rounded (1)
Leaf top hair and texture
 Hairless (11)
 Hairy (6)
 All over (1)
 Glossy (1)
 On veins (1)
Leaf top pattern
 Uniform (10)
 Mottled (1)
 One spot (1)
Leaf veins
 Pinnate (21)
 Parallel (17)
 Net-like (1)
 Palmate (1)
Longevity
 Annual (7)
 Perennial (3)
Plant growing in or on
 Land, erect (38)
 Water (4)
 Land, creeping (3)
 Wetland (3)
 Land, climbing (2)
 Other plants (1)
Plant height or length in cm
 30 - 50 (53)
 70 - 100 (47)
 10 - 30 (44)
 100 - 200 (42)
 50 - 70 (39)
 1 - 10 (13)
 Over 200 (11)
 Under 1 (1)
Range
 North America WEST (14)
 North America EAST (13)
 Mexico (10)
Seed main color
 Brown (7)
 Green (1)
 Yellow (1)
Seed texture
 Smooth (10)
 Knobby (1)
Sepal texture
 Hairy (3)
 Hairless (1)
Stem cross-section
 Square (8)
 Round (7)
Stem texture
 Hairless (6)
 Hairy (6)
 Hairs at base (5)
Z Composite flower arragement
 Dandelion (10)
 Daisy (9)
 Tight cluster (7)
 Loose (6)
 Not composite (2)
Z Composite ray number
 20-50 (1)
 5-10 (1)
 50-100 (1)
Z Disc flower color change
 Stays yellow (1)
 Yellow becomes red/purple (1)
Z Flower cluster, spacing between flowers
 Crowded, smaller than flower size (1)
 Equal to flower size (1)
 Loose, wider than flower size (1)
Z Flower group diameter in cm
 0.5-1 (1)
 1-1.5 (1)
 1.5-2 (1)
 2-3 (1)
 3-4 (1)
Z Flower group, spath blade main color
 Brown/maroon (1)
 Green (1)
Z Flower group, spathe secondary color
 Brown/maroon (1)
 None (1)
Z Leaf node
 Sheath (4)
 No sheath (2)