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Leslie J. Mehrhoff's Images

Title: Director
Organization: University of Connecticut
Unit: Invasive Plant Atlas of New England
Country: United States
   

580 Images of 108 Subjects View Subject List View Image Details View Thumbnails

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Image Subject Name Scientific Name Description
1237091 Japanese barberry Berberis thunbergii
1237104 shallow-wort Cynanchum spp. Comparision of flowers of Cynanchum louiseae (top) and Cynanchum rossicum (bottom)
2308042 water-chestnut Trapa natans
2308043 water-chestnut Trapa natans Floating rosettes
2308044 fig buttercup Ficaria verna close-up
2308045 Japanese knotweed Fallopia japonica Roadside Incursion
2308046 Japanese knotweed Fallopia japonica Inflorescence close-up
2308047 Morrow's honeysuckle Lonicera morrowii
2308050 oriental bittersweet Celastrus orbiculatus
2308051 oriental bittersweet Celastrus orbiculatus
2308052 Japanese barberry Berberis thunbergii Understory incursion.
2308053 garlic mustard Alliaria petiolata
2308054 tree-of-heaven Ailanthus altissima Infestation along roadside
2308056 coltsfoot Tussilago farfara in flower
2308060 Morrow's honeysuckle Lonicera morrowii
2308061 Japanese honeysuckle Lonicera japonica
2308068 fig buttercup Ficaria verna
2308081 garlic mustard Alliaria petiolata Understory incursion
2308084 leafy spurge Euphorbia esula
5269053 Norway maple Acer platanoides
5269054 Norway maple Acer platanoides
5269055 Norway maple Acer platanoides
5269056 Norway maple Acer platanoides
5269057 Norway maple Acer platanoides
5269058 Norway maple Acer platanoides
5269059 Norway maple Acer platanoides Young bark
5269060 Norway maple Acer platanoides
5269061 Norway maple Acer platanoides
5269062 Sycamore maple Acer pseudoplatanus
5269063 Sycamore maple Acer pseudoplatanus
5269064 Sycamore maple Acer pseudoplatanus
5269065 Sycamore maple Acer pseudoplatanus
5269066 Sycamore maple Acer pseudoplatanus
5269067 Sycamore maple Acer pseudoplatanus
5269068 Sycamore maple Acer pseudoplatanus
5269069 Sycamore maple Acer pseudoplatanus
5269073 Amur maple Acer ginnala
5269074 Amur maple Acer ginnala
5269075 Amur maple Acer ginnala
5269076 red sorrel Rumex acetosella
5269077 red sorrel Rumex acetosella
5269078 red sorrel Rumex acetosella
5269079 red sorrel Rumex acetosella
5269080 red sorrel Rumex acetosella
5269081 bishops goutweed Aegopodium podagraria
5269082 bishops goutweed Aegopodium podagraria
5269083 bishops goutweed Aegopodium podagraria
5269084 bishops goutweed Aegopodium podagraria
5269085 bishops goutweed Aegopodium podagraria
5269086 bishops goutweed Aegopodium podagraria
5269087 tree-of-heaven Ailanthus altissima Staminate inflorescence
5269088 tree-of-heaven Ailanthus altissima
5269089 tree-of-heaven Ailanthus altissima Pistillate flowers with young fruit
5269090 tree-of-heaven Ailanthus altissima
5269091 tree-of-heaven Ailanthus altissima
5269092 tree-of-heaven Ailanthus altissima
5269094 tree-of-heaven Ailanthus altissima plants in forests
5269095 tree-of-heaven Ailanthus altissima
5269096 garlic mustard Alliaria petiolata
5269097 garlic mustard Alliaria petiolata
5269098 garlic mustard Alliaria petiolata Basal rosette
5269099 garlic mustard Alliaria petiolata Early seedlings
5269100 garlic mustard Alliaria petiolata
5270001 garlic mustard Alliaria petiolata
5270002 garlic mustard Alliaria petiolata
5270003 garlic mustard Alliaria petiolata
5270004 wild garlic Allium vineale Bulbs
5270005 wild garlic Allium vineale Vegetative propagule inflorescence
5270006 European alder Alnus glutinosa
5270007 European alder Alnus glutinosa
5270008 European alder Alnus glutinosa
5270009 European alder Alnus glutinosa
5270010 European alder Alnus glutinosa
5270011 European alder Alnus glutinosa
5270012 indigobush Amorpha fruticosa
5270013 indigobush Amorpha fruticosa
5270014 indigobush Amorpha fruticosa
5270015 Amur peppervine Ampelopsis brevipedunculata
5270016 Amur peppervine Ampelopsis brevipedunculata
5270017 Amur peppervine Ampelopsis brevipedunculata
5270018 Amur peppervine Ampelopsis brevipedunculata
5270019 Amur peppervine Ampelopsis brevipedunculata
5270020 Amur peppervine Ampelopsis brevipedunculata
5270021 Brazilian egeria Egeria densa
5270022 Brazilian egeria Egeria densa
5270023 Brazilian egeria Egeria densa Leaf whorl
5270024 cheatgrass Bromus tectorum
5270025 cheatgrass Bromus tectorum
5270026 cheatgrass Bromus tectorum
5270027 cheatgrass Bromus tectorum Inflorescence close-up
5270028 cheatgrass Bromus tectorum
5270029 silver hairgrass Aira caryophyllea
5270030 silver hairgrass Aira caryophyllea
5270031 silver hairgrass Aira caryophyllea
5270032 silver hairgrass Aira caryophyllea
5270033 Mexican fireweed Bassia scoparia
5270034 Japanese barberry Berberis thunbergii
5270035 Japanese barberry Berberis thunbergii
5270036 Japanese barberry Berberis thunbergii
5270037 Japanese barberry Berberis thunbergii Purple morph
5270038 Japanese barberry Berberis thunbergii
5270039 Japanese barberry Berberis thunbergii
5270040 Japanese barberry Berberis thunbergii
5270041 Japanese barberry Berberis thunbergii
5270042 European barberry Berberis vulgaris
5270043 European barberry Berberis vulgaris
5270044 European barberry Berberis vulgaris Branch Morphology - B. vulgaris, top; Hybrid, middle; B. thunbergii, bottom
5270045 European barberry Berberis vulgaris Close-up of spines
5270046 flowering rush Butomus umbellatus
5270047 flowering rush Butomus umbellatus
5270048 flowering rush Butomus umbellatus
5270049 flowering rush Butomus umbellatus
5270050 flowering rush Butomus umbellatus
5270051 flowering rush Butomus umbellatus
5270052 flowering rush Butomus umbellatus
5270053 fanwort Cabomba caroliniana
5270054 fanwort Cabomba caroliniana
5270055 fanwort Cabomba caroliniana
5270056 fanwort Cabomba caroliniana
5270057 European waterstarwort Callitriche stagnalis
5270058 European waterstarwort Callitriche stagnalis
5270059 European waterstarwort Callitriche stagnalis
5270060 European waterstarwort Callitriche stagnalis
5270061 European waterstarwort Callitriche stagnalis
5270062 narrowleaf bittercress Cardamine impatiens
5270063 narrowleaf bittercress Cardamine impatiens Basal rosette
5270064 narrowleaf bittercress Cardamine impatiens Stem morphology
5270065 narrowleaf bittercress Cardamine impatiens Basal rosette
5270066 narrowleaf bittercress Cardamine impatiens
5270067 narrowleaf bittercress Cardamine impatiens
5270068 narrowleaf bittercress Cardamine impatiens Infructescence
5270069 perennial pepperweed Lepidium latifolium
5270070 perennial pepperweed Lepidium latifolium
5270071 perennial pepperweed Lepidium latifolium Basal rosettes
5270072 perennial pepperweed Lepidium latifolium
5270073 perennial pepperweed Lepidium latifolium
5270074 perennial pepperweed Lepidium latifolium
5270075 Canada thistle Cirsium arvense Flowers-white morph
5270076 Canada thistle Cirsium arvense
5270077 Canada thistle Cirsium arvense Close-up of flowers
5270078 Canada thistle Cirsium arvense
5270079 Canada thistle Cirsium arvense
5270080 Canada thistle Cirsium arvense
5270081 Canada thistle Cirsium arvense
5270082 Japanese sedge Carex kobomugi
5270083 Japanese sedge Carex kobomugi
5270084 Japanese sedge Carex kobomugi
5270085 Japanese sedge Carex kobomugi
5270086 Japanese sedge Carex kobomugi
5270087 brittleleaf naiad Najas minor
5270088 brittleleaf naiad Najas minor
5270089 brittleleaf naiad Najas minor
5270090 brittleleaf naiad Najas minor
5270091 winged burning bush Euonymus alatus
5270092 winged burning bush Euonymus alatus Fall color
5270093 winged burning bush Euonymus alatus
5270094 winged burning bush Euonymus alatus Close-up of stem showing wings
5270095 winged burning bush Euonymus alatus
5270096 winged burning bush Euonymus alatus Leaves with fruit
5270097 winged burning bush Euonymus alatus
5270098 winged burning bush Euonymus alatus
5270099 winged burning bush Euonymus alatus
5270100 oriental bittersweet Celastrus orbiculatus Vine growning up trunk
5271001 oriental bittersweet Celastrus orbiculatus Close-up of staminate flowers
5271002 oriental bittersweet Celastrus orbiculatus Close-up of pistillate flowers
5271003 oriental bittersweet Celastrus orbiculatus
5271004 oriental bittersweet Celastrus orbiculatus
5271005 oriental bittersweet Celastrus orbiculatus Fruit in tree
5271006 oriental bittersweet Celastrus orbiculatus
5271007 spotted knapweed Centaurea stoebe ssp. micranthos
5271008 spotted knapweed Centaurea stoebe ssp. micranthos seed head
5271009 spotted knapweed Centaurea stoebe ssp. micranthos Top of inflorescence
5271010 spotted knapweed Centaurea stoebe ssp. micranthos
5271011 spotted knapweed Centaurea stoebe ssp. micranthos
5271012 spotted knapweed Centaurea stoebe ssp. micranthos Involucral bracts
5271013 wild chervil Anthriscus sylvestris
5271014 wild chervil Anthriscus sylvestris
5271015 wild chervil Anthriscus sylvestris
5271016 wild chervil Anthriscus sylvestris
5271017 wild chervil Anthriscus sylvestris
5271018 wild chervil Anthriscus sylvestris
5271019 greater celandine Chelidonium majus
5271020 greater celandine Chelidonium majus Broken stem with orange sap
5271021 greater celandine Chelidonium majus
5271025 meadow campion Silene flos-cuculi
5271026 meadow campion Silene flos-cuculi
5271027 meadow campion Silene flos-cuculi
5271028 meadow campion Silene flos-cuculi
5271029 jimsonweed Datura stramonium
5271030 jimsonweed Datura stramonium
5271031 jimsonweed Datura stramonium
5271032 jimsonweed Datura stramonium
5271033 jimsonweed Datura stramonium Fruit splitting and releasing seeds
5271034 waterhyacinth Eichhornia crassipes
5271035 waterhyacinth Eichhornia crassipes Leaves with inflated petiole
5271036 waterhyacinth Eichhornia crassipes
5271037 waterhyacinth Eichhornia crassipes
5271038 waterhyacinth Eichhornia crassipes Cross-section of petiole
5271039 Russian-olive Elaeagnus angustifolia
5271040 Russian-olive Elaeagnus angustifolia
5271041 autumn-olive Elaeagnus umbellata
5271042 autumn-olive Elaeagnus umbellata
5271043 autumn-olive Elaeagnus umbellata
5271044 autumn-olive Elaeagnus umbellata Nitrogen-fixing nodules
5271045 autumn-olive Elaeagnus umbellata
5271046 autumn-olive Elaeagnus umbellata
5271047 autumn-olive Elaeagnus umbellata
5271048 crested latesummer mint Elsholtzia ciliata
5271049 crested latesummer mint Elsholtzia ciliata
5271050 crested latesummer mint Elsholtzia ciliata
5271051 crested latesummer mint Elsholtzia ciliata
5271052 crested latesummer mint Elsholtzia ciliata
5271053 crested latesummer mint Elsholtzia ciliata
5271054 parrotfeather Myriophyllum aquaticum
5271055 parrotfeather Myriophyllum aquaticum
5271056 parrotfeather Myriophyllum aquaticum
5271057 parrotfeather Myriophyllum aquaticum Emergent stems
5271058 hairy willowherb Epilobium hirsutum
5271059 hairy willowherb Epilobium hirsutum
5271060 hairy willowherb Epilobium hirsutum
5271061 hairy willowherb Epilobium hirsutum
5271062 hairy willowherb Epilobium hirsutum
5271063 hairy willowherb Epilobium hirsutum Ripe fruit capsules with seeds
5271064 hairy willowherb Epilobium hirsutum
5271065 Nepalese browntop Microstegium vimineum
5271066 Nepalese browntop Microstegium vimineum
5271067 Nepalese browntop Microstegium vimineum
5271068 Nepalese browntop Microstegium vimineum
5271069 Nepalese browntop Microstegium vimineum Fall color
5271070 Nepalese browntop Microstegium vimineum
5271071 Nepalese browntop Microstegium vimineum
5271072 Nepalese browntop Microstegium vimineum Comparison of infructescences of M. vimineum (bottom) and Leersia virginica (top)
5271073 Nepalese browntop Microstegium vimineum
5271074 leafy spurge Euphorbia esula
5271075 leafy spurge Euphorbia esula
5271076 leafy spurge Euphorbia esula
5271077 leafy spurge Euphorbia esula E. esula on right and E. cyparissias on left
5271078 leafy spurge Euphorbia esula E. esula taller plants and E. cyparissias shorter plants in back
5271079 Japanese knotweed Fallopia japonica
5271080 Japanese knotweed Fallopia japonica Inflorescence close-up
5271081 Japanese knotweed Fallopia japonica Roadside Incursion
5271082 Japanese knotweed Fallopia japonica
5271083 Japanese knotweed Fallopia japonica Cross-section of Stems
5271084 Japanese knotweed Fallopia japonica
5271085 Japanese knotweed Fallopia japonica
5271086 Japanese knotweed Fallopia japonica Stems Emerging in April
5271087 Japanese knotweed Fallopia japonica Comparison of leaves of P. sachalinense (right of each pair) and P. cuspidatum
5271088 Sakhalin knotweed Fallopia sachalinensis
5271089 Sakhalin knotweed Fallopia sachalinensis
5271090 Sakhalin knotweed Fallopia sachalinensis
5271091 Sakhalin knotweed Fallopia sachalinensis leaf size
5271092 Sakhalin knotweed Fallopia sachalinensis Comparison of leaves of P. sachalinense (right of each pair) and P. cuspidatum
5271093 slender snakecotton Froelichia gracilis
5271094 slender snakecotton Froelichia gracilis taproot
5271095 slender snakecotton Froelichia gracilis Inflorescence
5271096 slender snakecotton Froelichia gracilis
5271097 cypress spurge Euphorbia cyparissias
5271098 cypress spurge Euphorbia cyparissias
5271099 cypress spurge Euphorbia cyparissias
5271100 cypress spurge Euphorbia cyparissias
5272001 cypress spurge Euphorbia cyparissias Rhizomes
5272002 Thunberg's geranium Geranium thunbergii
5272003 Thunberg's geranium Geranium thunbergii
5272004 Thunberg's geranium Geranium thunbergii
5272005 Thunberg's geranium Geranium thunbergii Dried capsules
5272006 yellow hornpoppy Glaucium flavum
5272007 yellow hornpoppy Glaucium flavum
5272008 yellow hornpoppy Glaucium flavum
5272009 yellow hornpoppy Glaucium flavum
5272010 reed mannagrass Glyceria maxima
5272011 reed mannagrass Glyceria maxima
5272012 giant hogweed Heracleum mantegazzianum inflorescence with fruit
5272013 giant hogweed Heracleum mantegazzianum
5272014 giant hogweed Heracleum mantegazzianum
5272015 giant hogweed Heracleum mantegazzianum Stem cross-section
5272016 giant hogweed Heracleum mantegazzianum
5272017 giant hogweed Heracleum mantegazzianum
5272018 giant hogweed Heracleum mantegazzianum
5272019 giant hogweed Heracleum mantegazzianum
5272020 giant hogweed Heracleum mantegazzianum Infructescences
5272021 damesrocket Hesperis matronalis Close-up of white flowers
5272022 damesrocket Hesperis matronalis
5272023 damesrocket Hesperis matronalis Basal rosette
5272024 damesrocket Hesperis matronalis Flowers being pollinated by moth
5272025 damesrocket Hesperis matronalis
5272026 Japanese hop Humulus japonicus Leaves and Inflorescences
5272027 Japanese hop Humulus japonicus
5272028 Japanese hop Humulus japonicus
5272029 Japanese hop Humulus japonicus Habitat
5272030 Japanese hop Humulus japonicus
5272031 common frogbit Hydrocharis morsus-ranae
5272032 common frogbit Hydrocharis morsus-ranae
5272033 shrubby St. Johnswort Hypericum prolificum
5272034 shrubby St. Johnswort Hypericum prolificum
5272035 shrubby St. Johnswort Hypericum prolificum
5272036 shrubby St. Johnswort Hypericum prolificum
5272037 ornamental jewelweed Impatiens glandulifera
5272038 ornamental jewelweed Impatiens glandulifera
5272039 ornamental jewelweed Impatiens glandulifera Flower color morphs
5272040 ornamental jewelweed Impatiens glandulifera
5272041 ornamental jewelweed Impatiens glandulifera
5272042 ornamental jewelweed Impatiens glandulifera Close-up of Glands
5272043 yellowflag iris Iris pseudacorus Flowers-bright yellow form
5272044 yellowflag iris Iris pseudacorus
5272045 yellowflag iris Iris pseudacorus pale yellow form
5272046 yellowflag iris Iris pseudacorus
5272047 yellowflag iris Iris pseudacorus
5272048 yellowflag iris Iris pseudacorus Inside of cut rhizome
5272049 yellowflag iris Iris pseudacorus
5272050 yellowflag iris Iris pseudacorus
5272052 oakforest woodrush Luzula luzuloides Inflorescence
5272053 oakforest woodrush Luzula luzuloides
5272054 oakforest woodrush Luzula luzuloides
5272055 oakforest woodrush Luzula luzuloides Infructescence
5272056 oakforest woodrush Luzula luzuloides
5272057 oakforest woodrush Luzula luzuloides
5272058 border privet Ligustrum obtusifolium
5272059 border privet Ligustrum obtusifolium
5272060 border privet Ligustrum obtusifolium Ripe Fruit
5272061 border privet Ligustrum obtusifolium
5272062 California privet Ligustrum ovalifolium and foliage
5272063 California privet Ligustrum ovalifolium
5272064 European privet Ligustrum vulgare
5272065 European privet Ligustrum vulgare
5272066 European privet Ligustrum vulgare
5272067 European privet Ligustrum vulgare
5272068 European privet Ligustrum vulgare
5272074 Amur honeysuckle Lonicera maackii
5272075 Amur honeysuckle Lonicera maackii
5272076 Amur honeysuckle Lonicera maackii
5272077 Amur honeysuckle Lonicera maackii
5272078 Amur honeysuckle Lonicera maackii
5272079 Amur honeysuckle Lonicera maackii
5272080 Morrow's honeysuckle Lonicera morrowii
5272081 Morrow's honeysuckle Lonicera morrowii
5272082 Morrow's honeysuckle Lonicera morrowii
5272083 Morrow's honeysuckle Lonicera morrowii
5272084 Morrow's honeysuckle Lonicera morrowii
5272085 Morrow's honeysuckle Lonicera morrowii
5272086 Tatarian honeysuckle Lonicera tatarica
5272087 Tatarian honeysuckle Lonicera tatarica
5272088 Tatarian honeysuckle Lonicera tatarica
5272089 Bell's honeysuckle Lonicera x bella
5272090 Bell's honeysuckle Lonicera x bella
5272091 Bell's honeysuckle Lonicera x bella
5272092 Bell's honeysuckle Lonicera x bella Left: L. morrowii, Center: L. x bella, Right: L. tatarica
5272093 Bell's honeysuckle Lonicera x bella
5272094 dwarf honeysuckle Lonicera xylosteum Immature Fruit
5272095 dwarf honeysuckle Lonicera xylosteum
5272096 dwarf honeysuckle Lonicera xylosteum Mature fruit
5272097 moneywort Lysimachia nummularia
5272098 garden loosestrife Lysimachia vulgaris
5272099 garden loosestrife Lysimachia vulgaris
5272100 garden loosestrife Lysimachia vulgaris
5273001 garden loosestrife Lysimachia vulgaris
5273002 purple loosestrife Lythrum salicaria
5273003 purple loosestrife Lythrum salicaria
5273004 purple loosestrife Lythrum salicaria
5273005 purple loosestrife Lythrum salicaria
5273006 purple loosestrife Lythrum salicaria
5273007 purple loosestrife Lythrum salicaria
5273008 European pepperwort Marsilea quadrifolia
5273009 European pepperwort Marsilea quadrifolia
5273010 Chinese silvergrass Miscanthus sinensis
5273011 Chinese silvergrass Miscanthus sinensis
5273012 Chinese silvergrass Miscanthus sinensis Dehiscing seeds
5273013 Chinese silvergrass Miscanthus sinensis
5273014 Chinese silvergrass Miscanthus sinensis
5273015 true forget-me-not Myosotis scorpioides
5273016 true forget-me-not Myosotis scorpioides
5273017 true forget-me-not Myosotis scorpioides
5273018 true forget-me-not Myosotis scorpioides
5273019 true forget-me-not Myosotis scorpioides
5273020 variable watermilfoil Myriophyllum heterophyllum
5273021 variable watermilfoil Myriophyllum heterophyllum
5273022 Eurasian watermilfoil Myriophyllum spicatum Inflorescence
5273023 Eurasian watermilfoil Myriophyllum spicatum
5273024 Eurasian watermilfoil Myriophyllum spicatum
5273025 Eurasian watermilfoil Myriophyllum spicatum
5273026 onerow yellowcress Nasturtium microphyllum
5273027 onerow yellowcress Nasturtium microphyllum
5273028 watercress Nasturtium officinale
5273029 watercress Nasturtium officinale
5273030 watercress Nasturtium officinale
5273031 ground ivy Glechoma hederacea
5273032 ground ivy Glechoma hederacea
5273033 ground ivy Glechoma hederacea Vegetative spread
5273034 ground ivy Glechoma hederacea
5273035 Japanese honeysuckle Lonicera japonica
5273036 Japanese honeysuckle Lonicera japonica Lobed leaf form
5273037 Japanese honeysuckle Lonicera japonica
5273038 Japanese honeysuckle Lonicera japonica
5273039 Japanese honeysuckle Lonicera japonica
5273040 Japanese honeysuckle Lonicera japonica
5273041 Japanese honeysuckle Lonicera japonica
5273042 Scotch thistle Onopordum acanthium
5273043 Scotch thistle Onopordum acanthium
5273044 Scotch thistle Onopordum acanthium
5273045 Scotch thistle Onopordum acanthium
5273046 Scotch thistle Onopordum acanthium Spines on Leaves
5273047 star-of-Bethlehem Ornithogalum umbellatum
5273048 star-of-Bethlehem Ornithogalum umbellatum
5273049 star-of-Bethlehem Ornithogalum umbellatum
5273050 princesstree Paulownia tomentosa
5273051 princesstree Paulownia tomentosa
5273052 princesstree Paulownia tomentosa
5273053 princesstree Paulownia tomentosa
5273054 reed canarygrass Phalaris arundinacea
5273055 reed canarygrass Phalaris arundinacea
5273056 reed canarygrass Phalaris arundinacea
5273057 reed canarygrass Phalaris arundinacea
5273058 reed canarygrass Phalaris arundinacea
5273059 small carpetgrass, joint-head grass Arthraxon hispidus Close-up of leaves and stem
5273060 small carpetgrass, joint-head grass Arthraxon hispidus
5273061 small carpetgrass, joint-head grass Arthraxon hispidus
5273062 small carpetgrass, joint-head grass Arthraxon hispidus Clasping leaf bases
5273063 small carpetgrass, joint-head grass Arthraxon hispidus
5273064 small carpetgrass, joint-head grass Arthraxon hispidus
5273065 small carpetgrass, joint-head grass Arthraxon hispidus
5273066 common reed Phragmites australis
5273067 common reed Phragmites australis Size comparison
5273068 common reed Phragmites australis
5273069 common reed Phragmites australis
5273070 common reed Phragmites australis
5273071 common reed Phragmites australis Hairs at Leaf-stem Junction
5273072 common reed Phragmites australis Inflorescence Variation
5273073 common reed Phragmites australis
5273074 common reed Phragmites australis Rhizomes
5273075 waterlettuce Pistia stratiotes
5273076 waterlettuce Pistia stratiotes
5273077 waterlettuce Pistia stratiotes
5273078 Canada bluegrass Poa compressa
5273079 Canada bluegrass Poa compressa Cross-section of Compressed Stems
5273080 Canada bluegrass Poa compressa
5273081 Canada bluegrass Poa compressa
5273082 Canada bluegrass Poa compressa
5273083 Canada bluegrass Poa compressa
5273084 Oriental lady's thumb Persicaria longiseta
5273085 Oriental lady's thumb Persicaria longiseta
5273086 Oriental lady's thumb Persicaria longiseta
5273087 Oriental lady's thumb Persicaria longiseta
5273088 mile-a-minute weed Persicaria perfoliata Armed Stems
5273089 mile-a-minute weed Persicaria perfoliata  immature
5273090 mile-a-minute weed Persicaria perfoliata
5273091 mile-a-minute weed Persicaria perfoliata
5273092 mile-a-minute weed Persicaria perfoliata Close-up of Fruits and Ocreate
5273093 mile-a-minute weed Persicaria perfoliata
5273094 mile-a-minute weed Persicaria perfoliata
5273095 mile-a-minute weed Persicaria perfoliata
5273096 white poplar Populus alba Leaf aspects
5273097 white poplar Populus alba Branch with flowers
5273098 white poplar Populus alba Close-up of inflorescences
5273099 white poplar Populus alba
5273100 white poplar Populus alba Lower leaf surface
5274001 white poplar Populus alba Upper leaf surface
5274002 white poplar Populus alba
5274003 white poplar Populus alba
5274004 white poplar Populus alba
5274005 curlyleaf pondweed Potamogeton crispus
5274006 curlyleaf pondweed Potamogeton crispus Turion
5274007 kudzu Pueraria montana var. lobata
5274008 kudzu Pueraria montana var. lobata
5274009 kudzu Pueraria montana var. lobata Close-up of leaves and pods
5274010 kudzu Pueraria montana var. lobata Leaves and flowers
5274011 fig buttercup Ficaria verna
5274012 fig buttercup Ficaria verna
5274013 fig buttercup Ficaria verna Bulbs
5274014 fig buttercup Ficaria verna
5274015 fig buttercup Ficaria verna
5274016 fig buttercup Ficaria verna Bulbs
5274018 creeping buttercup Ranunculus repens
5274019 creeping buttercup Ranunculus repens
5274020 creeping buttercup Ranunculus repens
5274021 creeping buttercup Ranunculus repens
5274022 creeping buttercup Ranunculus repens
5274023 creeping buttercup Ranunculus repens
5274024 European buckthorn Rhamnus cathartica
5274025 European buckthorn Rhamnus cathartica Staminate flowers
5274026 European buckthorn Rhamnus cathartica Fruit and leaves (note incurved veins)
5274027 European buckthorn Rhamnus cathartica Pistillate Flowers
5274028 glossy buckthorn Frangula alnus Close-up of flowers and fruits
5274029 glossy buckthorn Frangula alnus Close-up of pinnately veined leaves
5274030 glossy buckthorn Frangula alnus
5274031 glossy buckthorn Frangula alnus
5274032 glossy buckthorn Frangula alnus
5274033 glossy buckthorn Frangula alnus
5274034 glossy buckthorn Frangula alnus
5274035 glossy buckthorn Frangula alnus
5274036 black locust Robinia pseudoacacia
5274037 black locust Robinia pseudoacacia
5274038 black locust Robinia pseudoacacia
5274039 black locust Robinia pseudoacacia
5274040 black locust Robinia pseudoacacia Stipular Spines
5274041 black locust Robinia pseudoacacia
5274042 black locust Robinia pseudoacacia Clonal Growth
5274043 black locust Robinia pseudoacacia
5274044 multiflora rose Rosa multiflora
5274045 multiflora rose Rosa multiflora
5274046 multiflora rose Rosa multiflora Close-up of fringed stipules
5274047 multiflora rose Rosa multiflora Pink-flowered form
5274048 multiflora rose Rosa multiflora
5274049 multiflora rose Rosa multiflora
5274050 rugosa rose Rosa rugosa
5274051 rugosa rose Rosa rugosa Hips
5274052 rugosa rose Rosa rugosa Hip
5274053 rugosa rose Rosa rugosa
5274054 rugosa rose Rosa rugosa white flower
5274055 rugosa rose Rosa rugosa
5274056 wine raspberry Rubus phoenicolasius
5274057 wine raspberry Rubus phoenicolasius
5274058 wine raspberry Rubus phoenicolasius
5274059 wine raspberry Rubus phoenicolasius Upper (green) and lower side (white) of leaves
5274060 wine raspberry Rubus phoenicolasius
5274061 giant salvinia Salvinia molesta
5274062 giant salvinia Salvinia molesta Sporangia
5274063 giant salvinia Salvinia molesta
5274064 Scotch broom Cytisus scoparius
5274065 Scotch broom Cytisus scoparius
5274066 Scotch broom Cytisus scoparius
5274067 Scotch broom Cytisus scoparius
5274068 Scotch broom Cytisus scoparius
5274069 tansy ragwort Senecio jacobaea Basal Rosette
5274070 tansy ragwort Senecio jacobaea
5274071 tansy ragwort Senecio jacobaea
5274072 tansy ragwort Senecio jacobaea
5274073 tansy ragwort Senecio jacobaea
5274074 tansy ragwort Senecio jacobaea
5274075 hydrilla Hydrilla verticillata Whole plants out of water
5274076 hydrilla Hydrilla verticillata Young plants
5274077 hydrilla Hydrilla verticillata
5274078 hydrilla Hydrilla verticillata
5274079 hydrilla Hydrilla verticillata
5274080 cup rosinweed Silphium perfoliatum Flower and Opposite Leaves
5274081 cup rosinweed Silphium perfoliatum
5274082 cup rosinweed Silphium perfoliatum
5274083 cup rosinweed Silphium perfoliatum Cross-section of stem and clasping leaves
5274084 cup rosinweed Silphium perfoliatum Close-up of Seed Head
5274085 cup rosinweed Silphium perfoliatum Seed Heads
5274086 bittersweet nightshade Solanum dulcamara
5274087 bittersweet nightshade Solanum dulcamara
5274088 bittersweet nightshade Solanum dulcamara
5274089 bittersweet nightshade Solanum dulcamara White Flower Form
5274090 bittersweet nightshade Solanum dulcamara
5274091 bittersweet nightshade Solanum dulcamara
5274092 water-chestnut Trapa natans Floating rosettes
5274093 water-chestnut Trapa natans
5274094 water-chestnut Trapa natans
5274095 water-chestnut Trapa natans
5274096 water-chestnut Trapa natans
5274097 water-chestnut Trapa natans
5274098 water-chestnut Trapa natans
5274100 coltsfoot Tussilago farfara Spreading Rhizomes
5275001 coltsfoot Tussilago farfara
5275002 coltsfoot Tussilago farfara
5275003 coltsfoot Tussilago farfara Close-up of Seed Head (fruit)
5275004 coltsfoot Tussilago farfara
5275005 coltsfoot Tussilago farfara
5275006 common valerian Valeriana officinalis and flowers
5275007 common valerian Valeriana officinalis
5275008 common valerian Valeriana officinalis
5275009 common valerian Valeriana officinalis
5275010 common valerian Valeriana officinalis
5275011 common valerian Valeriana officinalis
5275012 common valerian Valeriana officinalis
5275013 Black dog-strangling vine, black swallowwort Cynanchum louiseae Comparision of flowers of Cynanchum louiseae (top) and Cynanchum rossicum
5275014 Black dog-strangling vine, black swallowwort Cynanchum louiseae
5275015 Black dog-strangling vine, black swallowwort Cynanchum louiseae
5275016 Black dog-strangling vine, black swallowwort Cynanchum louiseae
5275017 Black dog-strangling vine, black swallowwort Cynanchum louiseae
5275018 Black dog-strangling vine, black swallowwort Cynanchum louiseae Twining vines
5275019 Black dog-strangling vine, black swallowwort Cynanchum louiseae
5275020 Black dog-strangling vine, black swallowwort Cynanchum louiseae Dehiscing seeds
5275021 dog-strangling vine, European swallowwort Cynanchum rossicum Comparision of flowers of Cynanchum louiseae (top) and Cynanchum rossicum (bottom)
5275022 dog-strangling vine, European swallowwort Cynanchum rossicum
5275023 dog-strangling vine, European swallowwort Cynanchum rossicum
5275024 dog-strangling vine, European swallowwort Cynanchum rossicum
5275025 dog-strangling vine, European swallowwort Cynanchum rossicum
5275026 dog-strangling vine, European swallowwort Cynanchum rossicum
5275027 dog-strangling vine, European swallowwort Cynanchum rossicum
5275028 dog-strangling vine, European swallowwort Cynanchum rossicum Close-up of fruit with seeds

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