| Species | Description/Photographer | |
| See the previous set of photos | ||
| Polygonum cuspidatum | A large plant/photo JMR | |
| Polygonum cuspidatum | A branch/photo JMR | |
| Polygonum cuspidatum | Flower buds/photo BAR | |
| Polygonum cuspidatum | A pink plant/photo BAR | |
| Polygonum cuspidatum | Pink branch/photo BAR | |
| Polygonum cuspidatum | Pink flowers/photo BAR | |
| Polygonum cuspidatum | Riverside/photo JMR | |
| Polygonum cuspidatum | Green branches/photo MT | |
| Polygonum perfoliatum | Japanese beetles/photo JMR | |
| Polygonum perfoliatum | Beetle damage/photo JMR | |
| Polygonum perfoliatum | Thwarted scientists/photo JMR | |
| Polygonum perfoliatum | Nasty leaves/photo JMR | |
| Polygonum perfoliatum | Nasty branch/photo JMR | |
| Polygonum perfoliatum | A big lump/photo courtesy Bill Jacobs, bjacobs(at)tnc.org (*) | |
| Polygonum perfoliatum | Climbing bushes/photo courtesy Bill Jacobs, bjacobs(at)tnc.org (*) | |
| Polygonum perfoliatum | Climbing trees/photo courtesy Bill Jacobs, bjacobs(at)tnc.org (*) | |
| Polypogon monspeliensis | Fuzzy flowers/photo BAR | |
| Polypogon monspeliensis | Plant/photo JMR | |
| Potentilla recta | Flowers/photo JMR | |
| Potentilla recta | Plants/photo JMR | |
| Potentilla recta | Hillside/photo Jerry Asher(*) | |
| Populus nigra var. italica | Dune invasion/photo JMR | |
| Populus nigra var. italica | Big trees I/photo JMR | |
| Populus nigra var. italica | Big trees II/photo JMR | |
| Populus nigra var. italica | Sucker/photo JMR | |
| Populus nigra var. italica | Lake beyond the weeds/photo JMR | |
| Prosopis pallida | Trees/photo JMR | |
| Psidium cattleianum | An invasive tree/photo JMR | |
| Psidium guajava | Dense tree/photo JMR | |
| Psidium guajava | Leaves/photo JMR | |
| Psoralea pinnata | Leaves and flowers/photo JMR | |
| Psoralea pinnata | Floral close-up/photo JMR | |
| Psoralea pinnata | Bush/photo JMR | |
| Pueraria montana | Weird.../photo BAR | |
| Pueraria montana | Weirder!/photo BAR | |
| Pueraria montana | More weirder/photo BAR | |
| Pueraria montana | More weirdest/photo BAR | |
| Pueraria montana | Flowers/photo BAR | |
| Pueraria montana | Weirdissimo.../photo JMR | |
| Pueraria montana | More weird/photo JMR | |
| Pueraria montana | Leaflets three/photo MT | |
| Pueraria montana | Invasions--so sad/photo BAR | |
| Pueraria montana | Scientist imperilled/photo MT | |
| Quercus acutissima | Leaves/photo JMR | |
| Quercus acutissima | Landscape tree/photo JMR | |
| Ranunculus ficaria | In garden/photo MT | |
| Ranunculus ficaria | Viewed closer/photo MT | |
| Ranunculus ficaria | Wider view/photo MT | |
| Ranunculus ficaria | In forest/Allan Lindberg (Nassau Co. Parks Dept., ajlindberg(at)verizon.net) | |
| Ranunculus ficaria | Many flowers/Allan Lindberg (Nassau Co. Parks Dept., ajlindberg(at)verizon.net) | |
| Ranunculus ficaria | Streamside/Allan Lindberg (Nassau Co. Parks Dept., ajlindberg(at)verizon.net) | |
| Ranunculus ficaria | Stream banks/Allan Lindberg (Nassau Co. Parks Dept., ajlindberg(at)verizon.net) | |
| Raphanus sativus | Bad foliage/photo JMR | |
| Rhamnus cathartica | Foliage I/photo JMR | |
| Rhamnus cathartica | Fruit I/photo JMR | |
| Rhamnus cathartica | Orange tissue/photo JMR | |
| Rhamnus cathartica | Foliage II/photo JMR | |
| Rhamnus cathartica | Fruit III/photo JMR | |
| Rhamnus cathartica | Fruit II/photo JMR | |
| Rhamnus cathartica | Leafing out/photo JMR | |
| Rhamnus cathartica | Invasion/photo JMR | |
| Rhamnus frangula | Plant/photo JMR | |
| Rhamnus frangula | Flowers/photo JMR | |
| Rhamnus frangula | Fruit.../photo JMR | |
| Rhamnus frangula | ...and more fruit/photo JMR | |
| Rhamnus frangula | Twigs/photo JMR | |
| Rhamnus frangula | Encroaching/photo JMR | |
| Rhamnus frangula | Seedlings & resprouts/photo JMR | |
| Rhodomyrtus tomentosa | Shrubs/photo JMR | |
| Rhodotypos scandens | Leaves and fruit/photo JMR | |
| Rhodotypos scandens | Leaves/photo JMR | |
| Rhodotypos scandens | Flowers and fruit/photo Marilyn Jordan, mjordan(at)tnc.org(*) | |
| Rhodotypos scandens | Shrub/photo Marilyn Jordan, mjordan(at)tnc.org(*) | |
| Rhodotypos scandens | Leaves and flowers/photo Marilyn Jordan, mjordan(at)tnc.org(*) | |
| Ricinus communis | Leaves/photo JMR | |
| Ricinus communis | More leaves/photo JMR | |
| Ricinus communis | Flowers/photo JMR | |
| Ricinus communis | Autumnal bush/photo BAR | |
| Ricinus communis | Toxic beans/photo BAR | |
| Ricinus communis | Oceanside/photo MT | |
| Rivina humilis | Leaves and fruit/photo JMR | |
| Robinia pseudoacacia | Small trees/photo JMR | |
| Robinia pseudoacacia | Flowers/photo JMR | |
| Robinia pseudoacacia | More flowers/photo JMR | |
| Robinia pseudoacacia | Flowering branch/photo JMR | |
| Robinia pseudoacacia | Tree bark/photo JMR | |
| Robinia pseudoacacia | Fruit/photo JMR | |
| Robinia pseudoacacia | Young tree/photo JMR | |
| Robinia pseudoacacia | Lone tree/photo MT | |
| Robinia pseudoacacia | Dried pods I/photo MT | |
| Robinia pseudoacacia | Dried pods II/photo MT | |
| Romulea rosea | Sandy plant/photo JMR | |
| Romulea rosea | Flower close-up/photo JMR | |
| Rosa multiflora | Thorns/photo BAR | |
| Rosa multiflora | Fruit/photo BAR | |
| Rosa multiflora | Flowers I/photo JMR | |
| Rosa multiflora | Stolon formation/photo JMR | |
| Rosa multiflora | Clambering upslope/photo JMR | |
| Rosa multiflora | Scientists in peril!/photo JMR | |
| Rosa multiflora | Stipulate leaf/photo JMR | |
| Rosa multiflora | wi/rosette disease/photo JMR | |
| Rosa multiflora | Flowers II/photo JMR | |
| Rosa multiflora | Big bush!/photo JMR | |
| Rubus argutus | Bad! Bad!/photo JMR | |
| Rubus argutus | Fruit/photo JMR | |
| Rubus argutus | Flower/photo JMR | |
| Rubus argutus | Ow! Ow!/photo JMR | |
| Rubus armeniacus | Big plant/photo JMR | |
| Rubus armeniacus | Plant/photo JMR | |
| Rubus armeniacus | Yum! Yum!/photo JMR | |
| Rubus armeniacus | Flowers/photo JMR | |
| Rubus armeniacus | More flowers/photo JMR | |
| Rubus armeniacus | Pretty flowers/photo JMR | |
| Rubus armeniacus | A thorny field/photo JMR | |
| Rubus armeniacus | A very thorny field/photo JMR | |
| Rubus fruticosus | Sprawling/photo JMR | |
| Rubus fruticosus | Spiny stems/photo JMR | |
| Rubus phoenicolasius | Plants/photo JMR | |
| Rubus phoenicolasius | Spiny branch/photo JMR | |
| Rubus phoenicolasius | Fruit/photo JMR | |
| Rubus phoenicolasius | Yum yum!/photo JMR | |
| Rubus rosifolius | Plants/photo JMR | |
| Rumex crispus | Inflorescence/photo JMR | |
| Rumex crispus | Plants/photo JMR | |
| Rumex crispus | In slough I/photo JMR | |
| Rumex crispus | In slough II/photo JMR | |
| Saccharum ravennae | Many culms/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Snippers for scale/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Hairy sheaths/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Inflorescences/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | By a bridge/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Thick infestation/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Arched plumes/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Tall plumes/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Riverside growth/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | On both banks/photo Jeffrey Firestone(*) | |
| Saccharum ravennae | Riparian weed/photo Jeffrey Firestone(*) | |
| Salix sp. | Group of plants/photo JMR | |
| Salix sp. | Hedge/photo JMR | |
| Salix sp. | Shoreline plants/photo JMR | |
| Salix sp. | Young plant/photo JMR | |
| Salvia aethiopis | Hillside plants/photo Jerry Asher(*) | |
| Salsola sp. | Choking branches/photo JMR | |
| Salvinia minima | Floating plants/photo BAR | |
| Salvinia minima | Gobbling a pond/photo BAR | |
| Salvinia minima | Many leaves/photo BAR | |
| Salvinia minima | In a bayou/photo BAR | |
| Salvinia minima | Leaf close-up/photo BAR | |
| Salvinia molesta | A plant/photo BAR | |
| Salvinia molesta | Leaf surface/photo BAR | |
| Salvinia molesta | Leaf hairs/photo BAR | |
| Sapium sebiferum | Catkin/photo JMR | |
| Sapium sebiferum | Looking upwards/photo MT | |
| Sapium sebiferum | Young tree/photo JMR | |
| Sapium sebiferum | Fruit/photo JMR | |
| Sapium sebiferum | Lygodium japonicum on Sapium sebiferum/photo BAR | |
| Sapium sebiferum | Infestation!/photo JMR | |
| Sapium sebiferum | Don't eat the fruit!/photo BAR | |
| Sapium sebiferum | Resprouts/photo JMR | |
| Sapium sebiferum | Green leaves/photo JMR | |
| Sapium sebiferum | Landscape tree/photo JMR | |
| Saponaria officinalis | Pretty flowers/photo JMR | |
| Saponaria officinalis | Whole plant/photo JMR | |
| Saponaria officinalis | In dunes I/photo JMR | |
| Saponaria officinalis | In dunes II/photo JMR | |
| Scaevola sericea | Flowers/photo MT | |
| Scaevola sericea | Flowers and fruit/photo MT | |
| Scaevola sericea | Many fruit/photo MT | |
| Scaevola sericea | Plant/photo MT | |
| Schinus molle | Fruiting branch/photo JMR | |
| Schinus molle | Tree branches/photo JMR | |
| Schinus molle | Leaves/photo BAR | |
| Schinus molle | Flowering branch/photo BAR | |
| Schinus molle | Floral close-up/photo BAR | |
| Schinus molle | Fruit/photo BAR | |
| Schinus polygamus | Branches/photo BAR | |
| Schinus polygamus | Leaves/photo BAR | |
| Schinus polygamus | Nasty apical spine/photo BAR | |
| Schinus polygamus | Bolting suckers/photo BAR | |
| Schinus polygamus | Bark/photo BAR | |
| Schinus terebinthifolius | Flowering branch/photo JMR | |
| Schinus terebinthifolius | Fruiting branch/photo JMR | |
| Schinus terebinthifolius | Fruit/photo JMR | |
| Schinus terebinthifolius | Sterile understory/photo JMR | |
| Schinus terebinthifolius | Young leaves/photo BAR | |
| Schinus terebinthifolius | Old fruit I/photo BAR | |
| Schinus terebinthifolius | Old fruit II/photo BAR | |
| Schinus terebinthifolius | Shaded leaves/photo BAR | |
| Schinus terebinthifolius | Sunny leaves/photo BAR | |
| Schismus spp. | On desert floor I/photo JMR | |
| Schismus spp. | On desert floor II/photo JMR | |
| Schismus spp. | On desert floor III/photo JMR | |
| Senecio jacobaea | Flowering plant/photo MT | |
| Senecio jacobaea | Foreground weeds/photo JMR | |
| Sesbania exaltata | Branchlet/photo BAR | |
| Sesbania punicea | Small tree/photo JMR | |
| Sesbania punicea | Flowering branch/photo JMR | |
| Sesbania punicea | Flowers/photo JMR | |
| Sesbania punicea | Fruit/photo BAR | |
| Sesbania punicea | Fruiting tree/photo BAR | |
| Sesbania punicea | Infested island/photo BAR | |
| Silybum marianum | Prickly plants/photo JMR | |
| Silybum marianum | Spiny flowers I/photo JMR | |
| Silybum marianum | Spiny flowers II/photo JMR | |
| Silybum marianum | A world of pain/photo JMR | |
| Silybum marianum | Pretty leaves I/photo BAR | |
| Silybum marianum | Pretty leaves II/photo BAR | |
| Sinapis arvensis | Fruit/photo JMR | |
| Sisymbrium orientale | A grassland invasion/photo JMR | |
| Sisymbrium orientale | Dominating grassland along the road/photo JMR | |
| Sisymbrium orientale | S. orientale patch with billy goat skull/photo JMR | |
| Solanum dulcamara | Flowers and leaves/photo JMR | |
| Solanum viarum | Bushes/photo Randy Westbrooks(*) | |
| Solanum viarum | More bushes/photo JMR | |
| Sonchus arvensis | Flowering plants/photo JMR | |
| Sorghum halepense | Plant portrait/photo BAR | |
| Sorghum halepense | A flowering stem/photo BAR | |
| Sorghum halepense | Branches/photo BAR | |
| Sorghum halepense | Awns on florets/photo BAR | |
| Sorghum halepense | Bad!/photo JMR | |
| Sorghum halepense | Ratty plants/photo JMR | |
| Sparaxis bulbifera | White flowered plant/photo JMR | |
| Spartina alterniflora | Mudflat I/photo JMR | |
| Spartina alterniflora | Mudflat II/photo JMR | |
| Spartina alterniflora | Dense plants/photo JMR | |
| Spartium junceum | More flowers/photo JMR | |
| Spartium junceum | Flowering bushes/photo JMR | |
| Spartium junceum | Young fruit/photo JMR | |
| Spartium junceum | More invading bushes/photo JMR | |
| Spartium junceum | Flowering bush/photo JMR | |
| Spartium junceum | Big plants/photo BAR | |
| Spartium junceum | Needle-branches/photo BAR | |
| Spartium junceum | Branches close up/photo BAR | |
| Spartium junceum | Single bush/photo JMR | |
| Spartium junceum | Flowers close-up/photo JMR | |
| Spathodea campanulata | Branches/photo JMR | |
| Spathodea campanulata | Flowers/photo JMR | |
| Spathodea campanulata | More flowers/photo JMR | |
| Spathodea campanulata | Yellow flowers/photo JMR | |
| Sphaerophysa salsula | Seedlings/photo MT | |
| Sphaerophysa salsula | Dead grey growth/photo MT | |
| Sphaerophysa salsula | Big grey patch/photo MT | |
| Taeniatherum caput-medusae | Close-up of seed head/photo JMR | |
| Taeniatherum caput-medusae | Big awns/photo BAR | |
| Taeniatherum caput-medusae | In the field/photo JMR | |
| Taeniatherum caput-medusae | Matted plants/photo JMR | |
| Tamarix aphylla | Tree/photo JMR | |
| Tamarix aphylla | Flowers I/photo JMR | |
| Tamarix aphylla | Flowers II/photo JMR | |
| Tamarix aphylla | Leaves/photo JMR | |
| Tamarix parviflora | Flower detail I/photo BAR | |
| Tamarix parviflora | Flower detail II/photo BAR | |
| Tamarix parviflora | Many flowers/photo JMR | |
| Tamarix parviflora | Streamside I/photo JMR | |
| Tamarix parviflora | Streamside II/photo JMR | |
| Tamarix parviflora | Streamside III/photo JMR | |
| Tamarix parviflora | In streambed I/photo JMR | |
| Tamarix parviflora | In streambed II/photo JMR | |
| Tamarix ramosissima | Colorado River/photo JMR | |
| Tamarix ramosissima | In Grand Canyon I/photo JMR | |
| Tamarix ramosissima | In Grand Canyon II/photo JMR | |
| Tamarix ramosissima | Flowers/photo JMR | |
| Tamarix ramosissima | Shrubby trees/photo JMR | |
| Tamarix ramosissima | Single bush/photo JMR | |
| Tamarix ramosissima | Scraggly plants/photo JMR | |
| Tamarix sp. | A bushy plant/photo JMR | |
| Tamarix sp. | In flower/photo JMR | |
| Tamarix sp. | Flower clusters/photo JMR | |
| Tamarix sp. | Fall colors I/photo JMR | |
| Tamarix sp. | Fall colors II/photo JMR | |
| Tamarix sp. | Dense growth/photo JMR | |
| Tamarix sp. | In a river/photo JMR | |
| Tibouchina herbacea | A thick marsh/photo Pat Bily(*) | |
| Tibouchina herbacea | Many plants!/photo Pat Bily(*) | |
| Tibouchina urvilleana | Trees/photo JMR | |
| Tibouchina urvilleana | Flowers/photo JMR | |
| Tithonia diversifolia | Flowers/photo JMR | |
| Toona ciliata | Trees/photo JMR | |
| Toona sinensis | Looking up I/photo JMR | |
| Toona sinensis | Looking up II/photo JMR | |
| Tragopogon dubius | Inflorescence/photo JMR | |
| Tragopogon dubius | Plants/photo JMR | |
| Tragopogon porrifolius | Seed head/photo JMR | |
| Tragopogon sp. | Flower, WY/photo JMR | |
| Tragopogon sp. | Seed head, MT/photo JMR | |
| Trapa natans | Lake weeds/photo JMR | |
| Trapa natans | Lots a' weeds/photo JMR | |
| Trapa natans | Where did the lake go?/photo JMR | |
| Trapa natans | On the water's edge/photo JMR | |
| Tribolium obliterum | Along a rock/photo Susan Hubbard(*) | |
| Tribolium obliterum | On the ground/photo Susan Hubbard(*) | |
| Tribolium obliterum | Clusters/photo Susan Hubbard(*) | |
| Tribolium obliterum | Stolons/photo Susan Hubbard(*) | |
| Tribolium obliterum | Herbarium images/photo BAR (WYSIWYG--see note at bottom) | |
| Tribolium uniolae | Inflorescence/photo JMR | |
| Tribulus terrestris | Matted plants/photo JMR | |
| Tribulus terrestris | Spiny fruit-ouch! ouch!/photo JMR | |
| Tribulus terrestris | Sprawling stems/photo JMR | |
| Tropaeolum majus | Orange flowers/photo JMR | |
| Typha angustifolia | Pondside/photo MT | |
| Typha angustifolia | Tall glade/photo MT | |
| Typha angustifolia | In flower/photo MT | |
| Typha angustifolia | A whole field/photo MT | |
| Typha latifolia | A thick growth/photo BAR | |
| Typha latifolia | Cattails!/photo BAR | |
| Ulex europaeus | A bush and human head/photo JMR | |
| Ulex europaeus | Flowering branch/photo JMR | |
| Ulex europaeus | Pokey branches/photo JMR | |
| Ulex europaeus | Flowers/photo JMR | |
| Ulex europaeus | Spiny pathway/photo JMR | |
| Ulex europaeus | Pokey flowers/photo JMR | |
| Ulex europaeus | Juvenile plants/photo JMR | |
| Ulmus pumila | Tree/photo JMR | |
| Ulmus pumila | Leaves and bark/photo JMR | |
| Ulmus pumila | Leaves/photo JMR | |
| Ulmus pumila | Seedling/photo JMR | |
| Ulmus pumila | Young tree/photo JMR | |
| Urochloa decumbens | Flowers/photo JMR | |
| Utricularia inflata | Emergent inflorescences/photo BAR | |
| Utricularia inflata | Flowers/photo BAR | |
| Utricularia inflata | Many bladders/photo BAR | |
| Utricularia inflata | Bladder--top view/photo BAR | |
| Utricularia inflata | Bladder--side side/photo BAR | |
| Ventenata dubia | Plant features/photo BAR (WYSIWYG--see note at bottom) | |
| Ventenata dubia | Infestation/photo JMR | |
| Verbascum blattaria | White flower/photo JMR | |
| Verbascum blattaria | Yellow flower/photo JMR | |
| Verbascum thapsus | Large flowering plants/photo JMR | |
| Verbascum thapsus | A first-year rosette/photo JMR | |
| Verbascum thapsus | Close-up of flowers/photo JMR | |
| Verbascum thapsus | A blight on a beautiful view/photo JMR | |
| Verbascum thapsus | Island invasion/photo JMR | |
| Verbascum thapsus | Wi/weed scientist's children/photo JMR | |
| Verbascum thapsus | Flower close-up/photo JMR | |
| Verbascum thapsus | Dominican Republic rosette/photo JMR | |
| Verbascum thapsus | Dominican Republic sunny invasion/photo JMR | |
| Verbascum virgatum | Flowers/photo JMR | |
| Verbena bonariensis | Plants/photo JMR | |
| Verbena bonariensis | One plant/photo BAR | |
| Vinca major | Flowers/photo BAR | |
| Vinca major | Leafy nasties/photo BAR | |
| Vinca major and weed geek | Flowers/photo JMR | |
| Vinca major/V. minor | Flower comparison/photo BAR | |
| Vinca minor | Flowers/photo JMR | |
| Vincetoxicum nigrum | Seedling/photo Charlotte Pyle (USDA) (*) | |
| Vincetoxicum nigrum | Leaves/photo Charlotte Pyle (USDA) (*) | |
| Vincetoxicum nigrum | Flowers/photo Charlotte Pyle (USDA) (*) | |
| Vincetoxicum nigrum | Fruit/photo Charlotte Pyle (USDA) (*) | |
| Vincetoxicum nigrum | Understory infestation/photo JMR | |
| Watsonia bulbillifera | Flowers/photo JMR | |
| Watsonia bulbillifera | Floral close-up/photo JMR | |
| Watsonia bulbillifera | Bulbils galore/photo JMR | |
| Watsonia bulbillifera | More flowers/photo JMR | |
| Watsonia bulbillifera | Big infestation/photo JMR | |
| Wisteria floribunda | Autumn leaves/photo BAR | |
| Wisteria sinensis | Fruiting pods/photo BAR | |
| Wisteria sinensis | Pods in space!/photo BAR | |
| Wisteria sinensis | Pods close up/photo BAR | |
| Wisteria sinensis | Seeds/photo BAR | |
| Wisteria sinensis | Leaves/photo BAR | |
| Wisteria sinensis | Shocked ecologist/photo BAR | |
| Wisteria sinensis | Strangling stem/photo BAR | |
| Xanthium spinosum | Painful plants/photo BAR | |
| Xanthium spinosum | Spiny branch/photo JMR | |
| Xanthium spinosum | Veined leaves/photo JMR | |
| Xanthium strumarium | Dreary plants/photo JMR | |
| Xanthium strumarium | Spiny cockleburs/photo JMR | |
| Xanthium strumarium | Fruiting branch/photo JMR | |
| Xanthium strumarium | Fruiting plant/photo JMR | |
| Zantedeschia aethiopica | Lily/photo JMR | |
| Zantedeschia aethiopica | Many lilies/photo JMR | |
| Zantedeschia aethiopica | Lot's o' lilies/photo JMR | |
| Zantedeschia aethiopica | Shady lilies/photo JMR | |
| Zantedeschia aethiopica | Lookin' at lilies/photo JMR | |
| Zantedeschia aethiopica | Midrange cluster/photo JMR | |
| Zantedeschia aethiopica | Pretty invasion/photo JMR | |
| Zantedeschia aethiopica | By a wetland/photo JMR | |
| Zantedeschia aethiopica | Flower in NZ/photo JMR | |