Species |
|
Description/Photographer |
Abrus precatorius |
|
Leaves/photo MT |
Abrus precatorius |
|
Climbing a tree I/photo MT |
Abrus precatorius |
|
Climbing a tree II/photo MT |
Abrus precatorius |
|
Climbing a tree III/photo MT |
Abutilon theophrasti |
|
Lots of plants!/photo JMR |
Acacia mearnsii |
|
A young invader/photo JMR |
Acer platanoides |
|
Milky sap/photo JMR |
Acer platanoides |
|
Leaf, feigning innocence/photo JMR |
Acer platanoides |
|
Branch/photo JMR |
Acer pseudoplatanus |
|
Leaves, see them plot/photo JMR |
Acroptilon repens |
|
A young flower/photo JMR |
Acroptilon repens |
|
A seedhead/photo JMR |
Acroptilon repens |
|
Conniving foliage/photo JMR |
Acroptilon repens |
|
Old dead stuff/photo JMR |
Acroptilon repens |
|
Harrassing a tree/photo JMR |
Acroptilon repens |
|
Excluding all else/photo JMR |
Acroptilon repens |
|
Nasty infestation/photo JMR |
Acroptilon repens |
|
Floral close-up/photo JMR |
Acroptilon repens |
|
More dead stuff/photo JMR |
Acroptilon repens |
|
Nice flower/photo JMR |
Acroptilon repens |
|
Dessicating/photo JMR |
Aegilops triuncialis |
|
Spikelets/photo BAR |
Aegilops triuncialis |
|
Invading serpentine/photo BAR |
Aegilops triuncialis |
|
More invasions/photo BAR |
Aegilops triuncialis |
|
Sprouts/photo JMR |
Aegopodium podagraria |
|
Glossy leaves/photo JMR |
Ageratina adenophora |
|
On a hill/photo JMR |
Ageratina adenophora |
|
Flowers/photo JMR |
Ageratina adenophora |
|
Single plant/photo MT |
Ageratina adenophora |
|
Flock of plants/photo MT |
Ageratina adenophora |
|
Flowers? For me?/photo MT |
Ageratina adenophora |
|
Flowers gone by/photo MT |
Ageratina adenophora |
|
Weedy patch/photo MT |
Ageratina adenophora |
|
Runners/photo MT |
Ageratina adenophora |
|
Closeup of flowers/photo JMR |
Ageratina adenophora |
|
Flowers side view/photo JMR |
Agropyron cristatum |
|
Seedheads/photo JMR |
Agropyron cristatum |
|
Closer shot of a seedhead/photo JMR |
Agropyron desertorum |
|
Ominous seedhead/photo JMR |
Agrostis capillaris |
|
It's dead!/photo JMR |
Agrostis capillaris |
|
It's alive!/photo JMR |
Agrostis stolonifera |
|
Inflorescence/photo BAR |
Agrostis stolonifera |
|
Leaves/photo BAR |
Agrostis stolonifera |
|
Dense growth/photo Marilyn Jordan(*) |
Agrostis stolonifera |
|
Foreground weed/photo Marilyn Jordan(*) |
Ailanthus altissima |
|
Characteristic leaf scars/photo JMR |
Ailanthus altissima |
|
Annoying roadside plants/photo JMR |
Ailanthus altissima |
|
A few bad trees/photo JMR |
Ailanthus altissima |
|
Smelly, nasty flowers/photo JMR |
Ailanthus altissima |
|
More flowers/photo JMR |
Ailanthus altissima |
|
Blighted plants/photo JMR |
Ailanthus altissima |
|
Bold tree/photo JMR |
Ailanthus altissima |
|
A grove/photo JMR |
Ailanthus altissima |
|
Thickets galore/photo JMR |
Ailanthus altissima |
|
Note leaf base gland/photo JMR |
Ailanthus altissima |
|
Native at China's Great Wall/photo JMR |
Albizia julibrissin |
|
Making seed pods/photo BAR |
Albizia julibrissin |
|
Seductively pretty leaves/photo BAR |
Alhagi maurorum |
|
Thorns!/photo JMR |
Alhagi maurorum |
|
Closeup of flowers/photo JMR |
Alhagi maurorum |
|
Many plants with flowers/photo JMR |
Alhagi maurorum |
|
Closeup of stems/photo JMR |
Alhagi maurorum |
|
Fruit!/photo JMR |
Alhagi maurorum |
|
Another plant/photo JMR |
Alliaria petiolata |
|
An infestation/photo JMR |
Alliaria petiolata |
|
Fruit/photo JMR |
Alliaria petiolata |
|
Flowering plant/photo JMR |
Alliaria petiolata |
|
In a forest/photo JMR |
Alliaria petiolata |
|
Young plant I/photo JMR |
Alliaria petiolata |
|
Young plant II/photo JMR |
Alliaria petiolata |
|
Flower/photo JMR |
Alliaria petiolata |
|
In West Virginia/photo JMR |
Alternanthera philoxeroides |
|
In a canal/photo JMR |
Alternanthera philoxeroides |
|
Where's the beach?/photo JMR |
Alternanthera philoxeroides |
|
Leafy menace/photo JMR |
Alternanthera philoxeroides |
|
Biocontrol damage, hurrah!/photo JMR |
Amaranthus albus |
|
Plant/photo JMR |
Amaranthus albus |
|
In a field/photo JMR |
Ammophila arenaria |
|
Flowers I/photo BAR |
Ammophila arenaria |
|
Flowers II/photo JMR |
Ammophila arenaria |
|
Flowers III/photo JMR |
Ammophila arenaria |
|
A bunch/photo JMR |
Ammophila arenaria |
|
On a dune/photo JMR |
Ammophila arenaria |
|
Topping a dune/photo JMR |
Ammophila arenaria |
|
Big bunch/photo JMR |
Ammophila arenaria |
|
New bunches/photo JMR |
Ammophila arenaria |
|
So many!/photo JMR |
Ammophila arenaria |
|
Dune/photo JMR |
Ammophila arenaria |
|
Bad weed! I/photo JMR |
Ammophila arenaria |
|
Bad weed!! II/photo JMR |
Ammophila arenaria |
|
Bad weed!!! III/photo JMR |
Ammophila arenaria |
|
NZ beach I/photo JMR |
Ammophila arenaria |
|
NZ beach II/photo JMR |
Ampelopsis brevipedunculata |
|
A climbing hazard/photo JMR |
Ampelopsis brevipedunculata |
|
Heavy clump/photo JMR |
Anchusa officinalis |
|
Flowers I/photo MT |
Anchusa officinalis |
|
Flowers II/photo MT |
Anchusa officinalis |
|
Single plant/photo MT |
Anchusa officinalis |
|
Big clump!/photo MT |
Andropogon gayanum |
|
Plant/photo JMR |
Andropogon gayanum |
|
Inflorescence/photo JMR |
Andropogon virginicus |
|
Fruit/photo JMR |
Andropogon virginicus |
|
Plant/photo JMR |
Andropogon virginicus |
|
An infestation/photo JMR |
Andropogon virginicus |
|
A few plants/photo JMR |
Andropogon virginicus |
|
A big clump/photo JMR |
Andropogon virginicus |
|
A bad scene/photo JMR |
Andropogon virginicus |
|
Cliffside/photo JMR |
Andropogon virginicus |
|
On recent lava/photo JMR |
Anredera cordifolia |
|
Flowers on a vine/photo Joe DiTomaso(*) |
Anthemis cotula |
|
Flowers/photo JMR |
Anthemis cotula |
|
Infestation!/photo JMR |
Anthemis cotula |
|
Plants/photo JMR |
Anthoxanthum odoratum |
|
Spikelets I/photo JMR |
Anthoxanthum odoratum |
|
Spikelets II/photo JMR |
Anthriscus caucalis |
|
Young plant/photo JMR |
Anthriscus caucalis |
|
Fruit/photo JMR |
Anthriscus caucalis |
|
Infestation/photo JMR |
Aptenia cordifolia |
|
Dense growth/photo Jo Kitz(*) |
Aptenia cordifolia |
|
Flowers/photo Jo Kitz(*) |
Aralia elata |
|
Fruit/photo Marilyn Jordan(*) |
Aralia elata |
|
Sample leaf/photo Marilyn Jordan(*) |
Aralia elata |
|
Habit/photo Marilyn Jordan(*) |
Aralia elata |
|
Flowering tree/photo JMR |
Aralia elata |
|
Flowers/photo JMR |
Aralia elata |
|
Leaflets/photo JMR |
Aralia elata |
|
Tree/photo JMR |
Aralia elata |
|
Leaf/photo JMR |
Arctium lappa |
|
Bur-like flowers/photo JMR |
Arctium lappa |
|
Plantlet/photo JMR |
Arctium minus |
|
Flowering stalk/photo JMR |
Arctium minus |
|
Sessile flowers/photo JMR |
Arctium minus |
|
Rosette/photo JMR |
Arctium minus |
|
Streamside/photo JMR |
Arctotheca calendula |
|
Flowers/photo JMR |
Arctotheca calendula |
|
Single flower/photo JMR |
Arctotheca calendula |
|
Many plants/photo JMR |
Arctotheca calendula |
|
More plants/photo JMR |
Arctotheca calendula |
|
Yet more plants/photo JMR |
Arctotheca calendula |
|
Plant/photo JMR |
Ardisia elliptica |
|
Flowers I/photo JMR |
Ardisia elliptica |
|
Flowers II/photo JMR |
Ardisia elliptica |
|
Fruit/photo Pat Howell(*) |
Arundo donax |
|
It is big!/photo JMR |
Arundo donax |
|
By a slough/photo JMR |
Arundo donax |
|
Mountainside/photo JMR |
Arundo donax |
|
Arundo landscape/photo JMR |
Arundo donax |
|
Leaf sheaths/photo JMR |
Arundo donax |
|
Variegated weed!/photo BAR |
Arundo donax |
|
...about to get lost!/photo JMR |
Arundo donax |
|
Along a river/photo JMR |
Arundo donax |
|
Flowering culm/photo JMR |
Arundo donax |
|
Flowering plants/photo JMR |
Arundo donax |
|
Landscape invasion/photo JMR |
Arundo donax |
|
Woody shoots!/photo MT |
Arundo donax |
|
Stalking Mandy/photo MT |
Arundo donax |
|
With scientists.../photo MT |
Arundo donax |
|
From above I/photo MT |
Arundo donax |
|
From above II/photo MT |
Asparagus asparagoides |
|
Leaves/photo JMR |
Asparagus asparagoides |
|
More leaves/photo JMR |
Asparagus asparagoides |
|
Leaves again/photo JMR |
Asphodelus fistulosus |
|
A few flowers/photo JMR |
Asphodelus fistulosus |
|
A bunch of plants/photo JMR |
Asphodelus fistulosus |
|
Flower and buds/photo JMR |
Atriplex semibaccata |
|
Plants/photo JMR |
Atriplex semibaccata |
|
Closeup from above/photo JMR |
Atriplex semibaccata |
|
Large plants/photo JMR |
Atriplex semibaccata |
|
About to be eaten by goats/photo JMR |
Avena fatua |
|
Raceme I/photo JMR |
Avena fatua |
|
Raceme II/photo JMR |
Avena fatua |
|
Spikelets/photo BAR |
Barbarea vulgaris |
|
Big plant/photo JMR |
Berberis spp. |
|
3-tipped spines, CT/photo BAR |
Berberis spp. |
|
Red fruit, CT/photo BAR |
Berberis spp. |
|
Immature fruit, MA/photo JMR |
Berberis spp. |
|
New leaves, IL/photo JMR |
Berberis spp. |
|
Flowers II, PA/photo JMR |
Berberis spp. |
|
Flowers III, PA/photo JMR |
Berberis spp. |
|
Young leaves, MA/photo JMR |
Berberis spp. |
|
One plant, MA/photo JMR |
Berberis spp. |
|
In cultivation, MA/photo JMR |
Berberis spp. |
|
Plantlet, MA/photo JMR |
Berberis spp. |
|
Flowers I, NY/photo JMR |
Berteroa incana |
|
Many plants/photo JMR |
Berteroa incana |
|
Large patch/photo JMR |
Berteroa incana |
|
Flowers/photo JMR |
Bothriochloa ischaemum |
|
Plant/photo JMR |
Bothriochloa ischaemum |
|
Inflorescence/photo JMR |
Bothriochloa ischaemum |
|
Invaded field/photo JMR |
Bothriochloa sp. |
|
Inflorescence/photo JMR |
Bothriochloa sp. |
|
Many plants/photo JMR |
Bothriochloa sp. |
|
Sunset over infestation/photo JMR |
Brachypodium sylvaticum |
|
Roadside/photo Thomas Kaye, kayet(at)peak.org(*) |
Brachypodium sylvaticum |
|
Young leaves/photo Thomas Kaye, kayet(at)peak.org(*) |
Brachypodium sylvaticum |
|
Small clump/photo Thomas Kaye, kayet(at)peak.org(*) |
Brachypodium sylvaticum |
|
Seedy heads/photo Greg Fitzpatrick, fitzpatg(at)juno.com(*) |
Brachypodium sylvaticum |
|
Green patch/photo Greg Fitzpatrick, fitzpatg(at)juno.com(*) |
Brachypodium sylvaticum |
|
Pale green, on a road/photo Thomas Kaye, kayet(at)peak.org(*) |
Brassica nigra |
|
In asphalt crack/photo JMR |
Brassica tournefortii |
|
Flowers/photo JMR |
Brassica tournefortii |
|
Flower detail/photo JMR |
Brassica tournefortii |
|
A few flowers/photo JMR |
Brassica tournefortii |
|
Plant in flower/photo JMR |
Brassica spp. |
|
Infestation/photo JMR |
Brassica spp. |
|
Patches/photo JMR |
Brassica spp. |
|
Flowers/photo JMR |
Briza maxima |
|
Fresh flowers/photo BAR |
Briza maxima |
|
Rattling fruit/photo BAR |
Briza maxima |
|
Spikelets close up/photo BAR |
Briza maxima |
|
Lots of flowers/photo JMR |
Briza minor |
|
Dangly flowers/photo BAR |
Briza minor |
|
Insideous spikelets/photo BAR |
Bromus catharticus |
|
Close-up of seedhead/photo BAR |
Bromus diandrus |
|
Close-up of seedhead/photo BAR |
Bromus diandrus |
|
Wind-tossed seedheads/photo JMR |
Bromus hordeaceus |
|
Close-up of seedhead/photo BAR |
Bromus hordeaceus |
|
Florets at anthesis/photo JMR |
Bromus hordeaceus |
|
More florets/photo JMR |
Bromus inermis |
|
Close-up of seedhead/photo JMR |
Bromus inermis |
|
Full view of panicle/photo JMR |
Bromus inermis |
|
The panicle later on/photo JMR |
Bromus inermis |
|
Impetuous anthers/photo JMR |
Bromus japonicus |
|
Dried flowers/photo JMR |
Bromus madritensis subsp. rubens |
|
A greenish seed head/photo JMR |
Bromus madritensis subsp. rubens |
|
A red seed head/photo JMR |
Bromus madritensis subsp. rubens |
|
Flower portrait/photo BAR |
Bromus madritensis subsp. rubens |
|
A bunch/photo JMR |
Bromus madritensis subsp. rubens |
|
Hedge/photo JMR |
Bromus madritensis subsp. rubens |
|
A landscape/photo JMR |
Bromus tectorum |
|
A plant making seed/photo JMR |
Bromus tectorum |
|
Brown field/photo JMR |
Bromus tectorum |
|
An infestation/photo JMR |
Bromus tectorum |
|
Hillside horror infestation/photo JMR |
Bromus tectorum |
|
Dangly fruit/photo JMR |
Bromus tectorum |
|
Weeds as far as the eye can see.../photo JMR |
Bromus tectorum |
|
Infesting sagebrush scrub/photo JMR |
Bromus tectorum |
|
Crowding out greasewood scrub/photo JMR |
Broussonetia papyrifera |
|
Invading tree/photo JMR |
Buddleja davidii |
|
Flowers/photo JMR |
Buddleja davidii |
|
Leaves/photo JMR |
Buddleja davidii |
|
Flower/photo JMR |
Buddleja davidii |
|
Foreground plant/photo JMR |
Buddleja davidii |
|
In the mist/photo JMR |
Butomus umbellatus |
|
Flowers/photo JMR |
Butomus umbellatus |
|
Inflorescence I/photo JMR |
Butomus umbellatus |
|
Inflorescence II/photo MT |
Butomus umbellatus |
|
Streamside/photo MT |
Butomus umbellatus |
|
Dense patch/photo MT |
Calluna vulgaris |
|
Wetland invasion/photo JMR |
Calluna vulgaris |
|
w/native Cortaderia/photo JMR |
Calluna vulgaris |
|
In tussocks/photo JMR |
Calluna vulgaris |
|
In shrubland/photo JMR |
Calluna vulgaris |
|
Alpine/photo JMR |
Calluna vulgaris |
|
Among shrubs/photo JMR |
Calluna vulgaris |
|
Tall plants/photo JMR |
Calluna vulgaris |
|
Clump/photo JMR |
Calluna vulgaris |
|
Alpine clump/photo JMR |
Calluna vulgaris |
|
Flowers I/photo JMR |
Calluna vulgaris |
|
Flowers II/photo JMR |
Caragana arborescens |
|
Plant close-up/photo JMR |
Caragana arborescens |
|
Branch/photo JMR |
Caragana arborescens |
|
Big patch/photo JMR |
Cardaria chalapensis |
|
Seductive flowers/photo JMR |
Cardaria chalepensis |
|
Bulging fruit/photo JMR |
Cardaria chalepensis |
|
Choked field/photo JMR |
Cardaria draba |
|
A young nasty beast/photo BAR |
Cardaria draba |
|
Wanton floral display/photo BAR |
Cardaria draba |
|
Roadside infestation/photo Jerry Asher(*) |
Cardaria draba |
|
Mature plant/photo JMR |
Cardaria draba |
|
Infested field/photo MT |
Cardaria draba |
|
Single plant/photo MT |
Carduus nutans |
|
Young flowerhead/photo JMR |
Carduus nutans |
|
Flowerhead I/photo JMR |
Carduus nutans |
|
Flowerhead II/photo JMR |
Carduus nutans |
|
Mature plant I/photo JMR |
Carduus nutans |
|
Mature plant II/photo JMR |
Carduus nutans |
|
At Grand Tetons I/photo JMR |
Carduus nutans |
|
At Grand Tetons II/photo JMR |
Carduus pycnocephalus |
|
Flowers/photo JMR |
Carduus pycnocephalus |
|
A plant/photo JMR |
Carduus pycnocephalus |
|
Setting seed/photo JMR |
Carica papaya |
|
Small plant/photo JMR |
Carica papaya |
|
Leaves/photo JMR |
Carica papaya |
|
Flowers/photo JMR |
Carpobrotus chilensis |
|
Flower/photo BAR |
Carpobrotus chilensis |
|
Dune infestation/photo BAR |
Carpobrotus edulis |
|
Flower/photo BAR |
Carpobrotus edulis |
|
Landscape of weeds/photo JMR |
Carpobrotus edulis |
|
Patches of yellow native survivors/photo JMR |
Carpobrotus sp. |
|
Cliff edge at Big Sur/photo MT |
Carpobrotus sp. |
|
Red plants/photo MT |
Carpobrotus sp. |
|
More red plants/photo MT |
Carpobrotus sp. |
|
Sprawling plant in NZ/photo JMR |
Casuarina equisetifolia |
|
A close-up of fruit/photo JMR |
Casuarina equisetifolia |
|
A close-up of a male catkin/photo JMR |
Casuarina equisetifolia |
|
In a grove of malevolent trees/photo JMR |
Casuarina equisetifolia |
|
On a hillside/photo JMR |
Casuarina equisetifolia |
|
Big big trees/photo Norma Jean Byrd(*) |
Casuarina equisetifolia |
|
Foul forest/photo Norma Jean Byrd(*) |
Catalpa bignonioides |
|
Leaves/photo JMR |
Catalpa bignonioides |
|
Fruit/photo JMR |
Catalpa spp. |
|
Landscape tree/photo JMR |
Catharanthus roseus |
|
Two flowers/photo MT |
Catharanthus roseus |
|
A plant/photo MT |
Catharanthus roseus |
|
Another plant/photo MT |
Cayratia japonica |
|
Leaves/photo Mary S. Bowen, LSU(*) |
Cayratia japonica |
|
Leaf detail/photo Mary S. Bowen, LSU(*) |
Cayratia japonica |
|
Flowers/photo Mary S. Bowen, LSU(*) |
Cayratia japonica |
|
Leaf surfaces/photo Justin Thayer, LSU(*) |
Cayratia japonica |
|
Invading plants/photo Justin Thayer, LSU(*) |
Celastrus orbiculatus |
|
The plant/photo JMR |
Celastrus orbiculatus |
|
Fruit/photo JMR |
Celastrus orbiculatus |
|
Leaves/photo JMR |
Celastrus orbiculatus |
|
Fruiting branches/photo JMR |
Celastrus orbiculatus |
|
Blanketing natives/photo JMR |
Celastrus orbiculatus |
|
Climbing a tree/photo JMR |
Celastrus orbiculatus |
|
Draping a tree/photo JMR |
Celastrus orbiculatus |
|
Red fruit/photo JMR |
Cenchrus ciliaris |
|
Spikelets/photo JMR |
Cenchrus ciliaris |
|
Bunches/photo JMR |
Cenchrus ciliaris |
|
In Arizona/photo JMR |
Cenchrus ciliaris |
|
More in Arizona/photo JMR |
Cenchrus ciliaris |
|
At Uluru I/photo BAR |
Cenchrus ciliaris |
|
At Uluru II/photo BAR |
Cenchrus ciliaris |
|
At Uluru III/photo BAR |