| Species | Description/Photographer | |
| See the previous set of photos | ||
| Centaurea calcitrapa | Spiny plant!/photo BAR | |
| Centaurea calcitrapa | Pokey flowers/photo BAR | |
| Centaurea calcitrapa | Ooch! Ouch!/photo BAR | |
| Centaurea calcitrapa | Pretty flowers/photo BAR | |
| Centaurea cyanus | Bachelor button flowers/photo JMR | |
| Centaurea cyanus | Flowers/photo BAR | |
| Centaurea maculosa | Flower I/photo JMR | |
| Centaurea maculosa | Flower II/photo JMR | |
| Centaurea maculosa | Flower III/photo JMR | |
| Centaurea maculosa | On a slope/photo MT | |
| Centaurea maculosa | Dried spotty seedheads/photo BAR | |
| Centaurea maculosa | Lots of seedheads/photo BAR | |
| Centaurea maculosa | Young plant/photo JMR | |
| Centaurea maculosa | Big plant/photo JMR | |
| Centaurea maculosa | Bigger plant/photo JMR | |
| Centaurea maculosa | Infestation/photo JMR | |
| Centaurea melitensis | wi/C. solstitialis/photo JMR | |
| Centaurea melitensis | A flower/photo JMR | |
| Centaurea melitensis | Two flowers/photo JMR | |
| Centaurea pratensis | One flower/photo MT | |
| Centaurea pratensis | More flowers/photo MT | |
| Centaurea pratensis | Flowers in hand/photo MT | |
| Centaurea pratensis | Many in bush/photo MT | |
| Centaurea solstitialis | A young plant/photo JMR | |
| Centaurea solstitialis | Spiny flower bud/photo JMR | |
| Centaurea solstitialis | A large plant/photo JMR | |
| Centaurea solstitialis | A mat of young plants/photo JMR | |
| Centaurea solstitialis | A dreadful patch/photo JMR | |
| Centaurea solstitialis | A seedy field/photo JMR | |
| Centaurea solstitialis | A spiny flower/photo BAR | |
| Centaurea solstitialis | Winged stems/photo BAR | |
| Centaurea solstitialis | Branches/photo BAR | |
| Centaurea solstitialis | Threatened by competition/photo by Jerry Asher(*) | |
| Centaurea solstitialis | Q-tip stage/photo JMR | |
| Centaurea solstitialis | Roadside/photo MT | |
| Ceratonia siliqua | Mature stinky pods/photo BAR | |
| Ceratonia siliqua | Flowers/photo BAR | |
| Ceratonia siliqua | Young fruit/photo BAR | |
| Ceratonia siliqua | Leaves/photo BAR | |
| Chamelaucium uncinatum | Inflorescence/photo JMR | |
| Chasmanthe floribunda | Inflorescence/photo JMR | |
| Chasmanthe floribunda | Plants/photo JMR | |
| Chenopodium album | Thick growth/photo JMR | |
| Chondrilla juncea | In bunchgrass/photo Jerry Asher(*) | |
| Chondrilla juncea | Impassible!/photo Jerry Asher(*) | |
| Chondrilla juncea | Infestation/photo Jerry Asher(*) | |
| Chondrilla juncea | Greenhouse study/photo JMR | |
| Chondrilla juncea | Bush in ID /photo JMR | |
| Chondrilla juncea | Fruiting in ID /photo JMR | |
| Chrysophyllum oliviforme | Invading Hawai'i/photo JMR | |
| Cichorium intybus | Flower I/photo BAR | |
| Cirsium arvense | Flowerheads I/photo JMR | |
| Cirsium arvense | Flowerheads II/photo JMR | |
| Cirsium arvense | View of plant/photo JMR | |
| Cirsium arvense | View of flowers/photo JMR | |
| Cirsium arvense | Seedheads/photo JMR | |
| Cirsium arvense | Sea of trouble/photo JMR | |
| Cirsium arvense | Creekside/photo JMR | |
| Cirsium arvense | Plants/photo JMR | |
| Cirsium arvense | w/white foliage/photo BAR | |
| Cirsium arvense | Male inflorescence/photo JMR | |
| Cirsium arvense | Female inflorescence 1/photo JMR | |
| Cirsium arvense | Female inflorescence 2/photo JMR | |
| Cirsium arvense | Female inflorescence 3/photo JMR | |
| Cirsium arvense | NZ flowers I/photo JMR | |
| Cirsium arvense | NZ flowers II/photo JMR | |
| Cirsium arvense | NZ flowers III/photo JMR | |
| Cirsium vulgare | Many more plants/photo JMR | |
| Cirsium vulgare | Weed in the mountains/photo JMR | |
| Cirsium vulgare | Flowers/photo JMR | |
| Cirsium vulgare | Making seed/photo JMR | |
| Cirsium vulgare | Rosette of evil/photo BAR | |
| Cirsium vulgare | White-flowered variant/photo JMR | |
| Cirsium vulgare | Many prickly plants/photo JMR | |
| Cirsium vulgare | Gone by thistles/photo JMR | |
| Cirsium vulgare | Single flower/photo MT | |
| Clerodendrum sp. | A rare escapee/photo JMR | |
| Clidemia hirta | Leaves and flowers/photo JMR | |
| Clidemia hirta | Leaves/photo JMR | |
| Clidemia hirta | Flowers/photo JMR | |
| Clidemia hirta | Fruit/photo JMR | |
| Clidemia hirta | Leaf study I/photo JMR | |
| Clidemia hirta | Leaf study II/photo JMR | |
| Coincya monensis | Evil rosette/photo Andrea Pickart(*) | |
| Coincya monensis | Dune invader/photo Andrea Pickart(*) | |
| Coincya monensis | Thick bunch/photo Andrea Pickart(*) | |
| Coincya monensis | Beaked fruit/photo Andrea Pickart(*) | |
| Coincya monensis | Flowers/photo Andrea Pickart(*) | |
| Colubrina asiatica | Leaves/photo JMR | |
| Colubrina asiatica | A bad infestation/photo JMR | |
| Colubrina asiatica | Plants/photo JMR | |
| Colubrina asiatica | One plant/photo MT | |
| Colubrina asiatica | Fruit/photo MT | |
| Colubrina asiatica | Flowers/photo MT | |
| Complaya trilobata | Plants I/photo Norma Jean Byrd(*) | |
| Complaya trilobata | Plants II/photo JMR | |
| Complaya trilobata | Close-view/photo MT | |
| Complaya trilobata | One flower/photo MT | |
| Complaya trilobata | Many flowers/photo MT | |
| Conium maculatum | Large plants/photo JMR | |
| Conium maculatum | Young fruit/photo JMR | |
| Conium maculatum | Young ferny foliage/photo BAR | |
| Conium maculatum | Big plant/photo BAR | |
| Convolvulus arvensis | A patch of plants.../photo BAR | |
| Convolvulus arvensis | Medium view/photo BAR | |
| Convolvulus arvensis | A closer view/photo BAR | |
| Convolvulus arvensis | Flowers/photo JMR | |
| Convolvulus arvensis | In a plowed field/photo JMR | |
| Convolvulus arvensis | Canyon preserve/photo JMR | |
| Coronilla varia | A flowering pagoda/photo JMR | |
| Coronilla varia | A clump of plants/photo JMR | |
| Coronilla varia | Many more plants/photo JMR | |
| Coronilla varia | Thick patch I/photo MT | |
| Coronilla varia | Thick patch II/photo MT | |
| Coronilla varia | Thick patch III/photo MT | |
| Cortaderia jubata | A grand plant with plumes/photo JMR | |
| Cortaderia jubata | Plants growing on a hillside/photo JMR | |
| Cortaderia jubata | Close up view of a seed plume/photo JMR | |
| Cortaderia jubata | Backlit plumes/photo MT | |
| Cortaderia jubata | Invaded hillside/photo MT | |
| Cortaderia jubata | Pretty plants I/photo MT | |
| Cortaderia jubata | Pretty plants II/photo MT | |
| Cortaderia jubata | Horrible hillside I/photo MT | |
| Cortaderia jubata | Horrible hillside II/photo MT | |
| Cortaderia jubata | Green plants/photo MT | |
| Cortaderia jubata | Spot the human!/photo BAR | |
| Cortaderia jubata | Too many plants!/photo JMR | |
| Cortaderia selloana | Attacking a home?/photo Joe DiTomaso(*) | |
| Cortaderia selloana | Single plant/photo Joe DiTomaso(*) | |
| Cortaderia selloana | Inflorescence/photo Joe DiTomaso(*) | |
| Cortaderia sp. | Big plants!/photo JMR | |
| Cortaderia sp. | On a hillside/photo JMR | |
| Cortaderia sp. | Many flags/photo JMR | |
| Crocosmia x crocosmiiflora | Flowers!/photo JMR | |
| Crocosmia x crocosmiiflora | Plants/photo JMR | |
| Cryptocoryne beckettii | Plant underwater/photo Paul Krombholz(*) | |
| Cryptocoryne beckettii | Triploid form/photo Jan D. Bastmeijer(*) | |
| Cryptocoryne beckettii | Flower/photo Jan D. Bastmeijer(*) | |
| Cryptocoryne beckettii | More flowers/photo Jan D. Bastmeijer(*) | |
| Cuscuta japonica | Strangling/photo BAR | |
| Cuscuta japonica | Choking/photo BAR | |
| Cuscuta japonica | Tangling/photo BAR | |
| Cuscuta japonica | Sucking/photo BAR | |
| Cynanchum rossicum | Reaching into a tree/photo JMR | |
| Cynanchum rossicum | Old plants/photo Bill Jacobs, bjacobs(at)tnc.org(*) | |
| Cynanchum rossicum | Flowers/photo JMR | |
| Cynanchum rossicum | Fruiting pods/photo JMR | |
| Cynanchum rossicum | Roadside/photo Bill Jacobs, bjacobs(at)tnc.org(*) | |
| Cynanchum rossicum | Infestation/photo JMR | |
| Cynanchum rossicum | Backyard badboy/photo JMR | |
| Cynanchum rossicum | Leaves and fruit/photo JMR | |
| Cynanchum rossicum | Many pods/photo Bill Jacobs, bjacobs(at)tnc.org(*) | |
| Cynanchum rossicum | In forest I/photo Bill Jacobs, bjacobs(at)tnc.org(*) | |
| Cynanchum rossicum | In forest II/photo Bill Jacobs, bjacobs(at)tnc.org(*) | |
| Cynanchum rossicum | Big field/photo Bill Jacobs, bjacobs(at)tnc.org(*) | |
| Cynara cardunculus | Rosette I/photo JMR | |
| Cynara cardunculus | Rosette II/photo JMR | |
| Cynara cardunculus | Rosette III/photo JMR | |
| Cynara cardunculus | Flower/photo JMR | |
| Cynodon dactylon | Stolons/photo JMR | |
| Cynodon dactylon | Plants/photo JMR | |
| Cynoglossum officinale | A plant I/photo JMR | |
| Cynoglossum officinale | A plant II/photo JMR | |
| Cynoglossum officinale | A plant III/photo JMR | |
| Cynoglossum officinale | Inflorescence/photo JMR | |
| Cynoglossum officinale | Roots!/photo MT | |
| Cynosurus echinatus | Strange flowers/photo BAR | |
| Cyperus entrerianus | Seeds/photo MT | |
| Cyperus entrerianus | Plants/photo MT | |
| Cyperus entrerianus | Dense growth/photo MT | |
| Cyperus entrerianus | Choked field/photo MT | |
| Cytisus multiflorus | Plant/photo JMR | |
| Cytisus multiflorus | On a hill/photo JMR | |
| Cytisus scoparius | A field of young plants/photo JMR | |
| Cytisus scoparius | Dense growth on hill/photo JMR | |
| Cytisus scoparius | A band of plants on a hillside/photo JMR | |
| Cytisus scoparius | Flower closeup/photo BAR | |
| Cytisus scoparius | On a dune/photo JMR | |
| Dactylis glomerata | Nasty spikelets/photo JMR | |
| Daucus carota | Fruit/photo BAR | |
| Daucus carota | Flowers I/photo BAR | |
| Daucus carota | Flowers II/photo JMR | |
| Delairea odorata | Leaves and flowers/photo JMR | |
| Delairea odorata | Leaves/photo BAR | |
| Delairea odorata | Crawling up a hill/photo BAR | |
| Delairea odorata | at Featherbed (South Africa)/photo Greg Archbald(*) | |
| Delairea odorata | at Giant's Castle I (South Africa)/photo Greg Archbald(*) | |
| Delairea odorata | at Giant's Castle II (South Africa)/photo Greg Archbald(*) | |
| Delairea odorata | Many leaves/photo BAR | |
| Delairea odorata | Evil swathe/photo JMR | |
| Delairea odorata | Inflorescences/photo JMR | |
| Delairea odorata | Lost hillside I/photo JMR | |
| Delairea odorata | Lost hillside II/photo JMR | |
| Delairea odorata | Ascending forbs/photo JMR | |
| Delairea odorata | Tree draperies/photo JMR | |
| Digitalis purpurea | Flowers/photo BAR | |
| Digitalis purpurea | More flowers/photo BAR | |
| Digitalis purpurea | Many flowers/photo JMR | |
| Digitalis purpurea | Several plants/photo JMR | |
| Digitalis purpurea | Infestation/photo JMR | |
| Dioscorea bulbifera | A climbing plant/photo JMR | |
| Dioscorea bulbifera | Aerial bulbil/photo JMR | |
| Dioscorea bulbifera | Double dense!/photo BAR | |
| Dioscorea bulbifera | Dense growth/photo BAR | |
| Dioscorea oppositifolia | Obscuring light/photo Peter Whan(*) | |
| Dioscorea oppositifolia | Obscuring light/photo Peter Whan(*) | |
| Dipsacus fullonum ssp. sylvestris | Rosettes/photo JMR | |
| Dipsacus fullonum ssp. sylvestris | Crack in asphalt/photo JMR | |
| Dipsacus fullonum ssp. sylvestris | Pre-bloom/photo JMR | |
| Dipsacus fullonum ssp. sylvestris | In flower/photo JMR | |
| Dipsacus fullonum ssp. sylvestris | Infested meadow/photo JMR | |
| Dipsacus fullonum | Infested slope/photo MT | |
| Dipsacus fullonum | Big plant/photo BAR | |
| Dipsacus fullonum | Leaf axil I/photo BAR | |
| Dipsacus fullonum | Leaf axil II/photo BAR | |
| Dipsacus sp. | Spiny inflorescence/photo MT | |
| Dipsacus sp. | D. sativus(?) head/photo JMR | |
| Dipsacus sp. | D. sativus(?) invasion/photo JMR | |
| Dipsacus sp. | Landscape invasion/photo JMR | |
| Dissotis rotundifolia | Pretty flowers/photo JMR | |
| Echium candicans | Plants/photo JMR | |
| Echium candicans | Tall spike/photo JMR | |
| Echium candicans | Short spike/photo JMR | |
| Echium candicans | On ocean cliff/photo JMR | |
| Echium plantagineum | Purple flowers/photo JMR | |
| Echium plantagineum | Another look/photo JMR | |
| Echium spp. | New invasion I/photo JMR | |
| Echium spp. | New invasion II/photo JMR | |
| Echium spp. | Flowers/photo JMR | |
| Egeria densa | Leafy plants/photo BAR | |
| Ehrharta calycina | Infestation/photo JMR | |
| Ehrharta longiflora | Inflorescence/photo JMR | |
| Eichhornia crassipes | Flower spike/photo BAR | |
| Eichhornia crassipes | Flowers/photo JMR | |
| Eichhornia crassipes | A lake!/photo JMR | |
| Eichhornia crassipes | Infested waterway I/photo MT | |
| Eichhornia crassipes | Infested waterway II/photo MT | |
| Eichhornia crassipes | Leaves I/photo BAR | |
| Eichhornia crassipes | Leaves II/photo BAR | |
| Eichhornia crassipes | "Bull" form I/photo BAR | |
| Eichhornia crassipes | "Bull" form II/photo BAR | |
| Elaeagnus angustifolia | Fruit/photo JMR | |
| Elaeagnus angustifolia | Flowers/photo JMR | |
| Elaeagnus angustifolia | Red cultivar I/photo BAR | |
| Elaeagnus angustifolia | Red cultivar II/photo BAR | |
| Elaeagnus angustifolia | Encroaching trees/photo JMR | |
| Elaeagnus angustifolia | Along a river/photo JMR | |
| Elaeagnus angustifolia | View from a bridge/photo JMR | |
| Elaeagnus angustifolia | In fruit/photo JMR | |
| Elaeagnus umbellata | Twigs/photo BAR | |
| Elaeagnus umbellata | Leaves and flowers/photo JMR | |
| Elaeagnus umbellata | Fruit!/photo JMR | |
| Eragrostis lehmanniana | A carpet/photo JMR | |
| Eragrostis lehmanniana | Arizona infestation/photo JMR | |
| Eragrostis lehmanniana | Nasty inflorescence/photo JMR | |
| Eragrostis curvula | Weepy plant/photo JMR | |
| Eragrostis curvula | Infestation/photo JMR | |
| Eragrostis curvula | Inflorescence/photo JMR | |
| Eragrostis curvula | Three of them/photo JMR | |
| Eragrostis curvula | Infesting a field/photo JMR | |
| Erechtites minima | Setting seed/photo JMR | |
| Erodium botrys | Flowers/photo JMR | |
| Erodium botrys | Dense patch/photo JMR | |
| Erodium botrys | Flowers & fruit/photo JMR | |
| Erodium cicutarium | Flowers I/photo JMR | |
| Erodium cicutarium | Flowers II/photo JMR | |
| Erodium cicutarium | Flowers III/photo JMR | |
| Erodium moschatum | Flowers/photo JMR | |
| Erodium moschatum | Plant/photo JMR | |
| Eucalyptus globulus | A dangerously large tree/photo JMR | |
| Eucalyptus globulus | Dimorphic leaves/photo BAR | |
| Eucalyptus globulus | Fruit and flowers/photo JMR | |
| Eucalyptus globulus | Young trees/photo BAR | |
| Eucalyptus globulus | Entering a dark grove/photo JMR | |
| Eucalyptus globulus | Inside a dark grove/photo JMR | |
| Eucalyptus globulus | Dark grove II/photo JMR | |
| Eucalyptus globulus | Wicked grove/photo JMR | |
| Euonymus alatus | Fall fruit & leaves/photo BAR | |
| Euonymus alatus | Winged stems/photo BAR | |
| Euonymus alatus | Escaping seedlings/photo BAR | |
| Euonymus alatus | Fall foliage/photo BAR | |
| Euonymus alatus | Unwinged stems/photo BAR | |
| Euonymus fortunei | Leaves & fruit/photo JMR | |
| Euphorbia cyparissias | Many plants/photo JMR | |
| Euphorbia cyparissias | With ruler/photo JMR | |
| Euphorbia cyparissias | In a planting/photo JMR | |
| Euphorbia cyparissias | From above/photo Marilyn Jordan (mjordan(at)tnc.org)* | |
| Euphorbia cyparissias | From the side/photo Marilyn Jordan (mjordan(at)tnc.org)* | |
| Euphorbia cyparissias | Many flowers/photo Marilyn Jordan (mjordan(at)tnc.org)* | |
| Euphorbia esula | A few plants/photo BAR | |
| Euphorbia esula | A single plant/photo BAR | |
| Euphorbia esula | A field of woe!/photo BAR | |
| Euphorbia esula | Flowers yield seed/photo JMR | |
| Euphorbia esula | Flowers/photo JMR | |
| Euphorbia esula | Hillside/photo by Jerry Asher(*) | |
| Euphorbia esula | A small clump I/photo JMR | |
| Euphorbia esula | A small clump II/photo JMR | |
| Euphorbia esula | A storm of weeds/photo JMR | |
| Euphorbia esula | Green patch/photo JMR | |
| Euphorbia esula | Biocontrol release/photo JMR | |
| Euphorbia lathyris | Fruity/photo Marilyn Jordan, mjordan(at)tnc.org | |
| Euphorbia lathyris | Tall plant!/photo Marilyn Jordan, mjordan(at)tnc.org | |
| Euphorbia lathyris | VERY tall plant!/photo Marilyn Jordan, mjordan(at)tnc.org | |
| Euphorbia lathyris | Seedling/photo Marilyn Jordan, mjordan(at)tnc.org | |
| Euphorbia terracina | Flower closeup/photo JMR | |
| Ferraria crispa | Flower/photo JMR | |
| Festuca arundinacea | Inflorescence/photo JMR | |
| Festuca arundinacea | Plant I/photo JMR | |
| Festuca arundinacea | Plant II/photo JMR | |
| Ficus carica | Muddy resprouts/photo JMR | |
| Ficus carica | In Hawai'i/photo JMR | |
| Ficus carica | Hillside plant/photo JMR | |
| Foeniculum vulgare | A young stand/photo JMR | |
| Foeniculum vulgare | Flowering plant/photo JMR | |
| Foeniculum vulgare | Flower/photo JMR | |
| Foeniculum vulgare | Fennel boulevard/photo JMR | |
| Foeniculum vulgare | Climbing a hill/photo JMR | |
| Foeniculum vulgare | Young plant/photo JMR | |
| Foeniculum vulgare | Dense fennel patch/photo JMR | |
| Foeniculum vulgare | At a preserve/photo JMR | |
| Foeniculum vulgare | At Big Sur, CA/photo JMR | |
| Fraxinus uhdei | Big weed!/photo JMR | |
| Fraxinus uhdei | Leaf/photo JMR | |
| Fraxinus uhdei | Seedlings/photo JMR | |
| Fraxinus uhdei | Trunks/photo JMR | |
| Freesia sp. | Invading Australia/photo JMR | |
| Freesia sp. | Pink flower/photo JMR | |
| Freesia sp. | Yellow flower/photo JMR | |
| Freesia sp. | White flower/photo JMR | |
| Fumaria capreolata | Leaves and flower/photo JMR | |
| Fumaria capreolata | Another shot/photo JMR | |