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870-19. Smartweed (Curly-top knotweed, Polygonum tomentosum, Persicaria lapathifolia, Russian name Gorets) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 Polygonum bistorta (Gorets Zmeinyi in Russian) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 8, 2011  Flowers of smartweed (Persicaria, Polygonum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024  Smartweed (Persicaria, Polygonum) in a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020  Blooming smartweed (Persicaria, Polygonum) in a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020  Flowers of smartweed (Persicaria, Polygonum) in a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020  Smartweed (Persicaria pensylvanicum, Polygonum pensylvanicum) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 5, 2009  Smartweed (Persicaria, Polygonum) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024  Flowers of smartweed (Persicaria, Polygonum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024  Shoots of giant knotweed (Polygonum sachalinense) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 9, 2017  Melampyrum nemorosum (Russian name Ivan Da Marya) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Colony of flowers of Melampyrum nemorosum (Russian name Ivan Da Marya) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) on a meadow in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Marsh gilliflower (Ragged Robin, Coccyganthe flos-cuculi, Russian name Kukushkin Tsvet) on a meadow in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Smartweed (Polygonum) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 10, 2009  Woolly burdock (Arctium tomentosum, Russian name Lopuh) in Aleksandrovsky Park in Pushkin (former Tsarskoe Selo), a suburb of Saint Petersburg. Russia, July 10, 2010  Blooming Woolly burdock (Arctium tomentosum, Russian name Lopuh) on roadside in Aleksandrovsky Park in Pushkin (former Tsarskoe Selo), a suburb of Saint Petersburg. Russia, July 10, 2010  Close up of flower of Woolly burdock (Arctium tomentosum, Russian name Lopuh) in Aleksandrovsky Park in Pushkin (former Tsarskoe Selo), a suburb of Saint Petersburg. Russia, July 10, 2010  Horsetail knotweed (Polygonum equisetiforme, local name qadab) in a depression near Salwa Road, south-west from Doha. Qatar, April 23, 2014  Fir alley in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  A road in Pavlovsk Park, south from Saint Petersburg. Russia, June 23, 2010  Cutting in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Road in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Linden alley in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Birch alley in far end of Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Sewage waterfall in Old Sylvia in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Column "End of World" (Konets Sveta) in Pavlovsk Park, south from Saint Petersburg. Russia, June 23, 2010  Birch circle (Krug Belyh Berioz) in far end of Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Common selfheal (Prunella vulgaris) on a meadow in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Novosilviysky stone bridge of Slavianka River in Pavlovsk Park, south from Saint Petersburg. Russia, June 23, 2010  Lesser Butterfly-orchid (Platanthera bifolia) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Smartweed (Polygonum) near a pond in Central Park. College Station, Texas, July 30, 2014  Slavianka River and Khram Druzhby (Friendship Temple) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Flower of lesser Butterfly-orchid (Platanthera bifolia) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Iron funeral gates (1808 - 1809) in a forest near Mausoleum "To kind spouse" in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Central statue of Apollo, a Greek and Roman god on Twelve Paths (Dvenadtsat Dorozhek) in Old Sylvia in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Green leaves of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, June 14, 2011  Yellow flowers of Meadow vetchling (meadow pea, Lathyrus pratensis) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Field mouse-ear (Cerastium arvense, Russian name Yaskolka) on 12-th Parade Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, June 6, 2017  Sheathed Woodtuft mushrooms (Kuehneromyces mutabilis, Pholiota mutabilis) on a meadow in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Hogweed (Heracleum sosnowskyi, Russian name Borshchevik) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Sculpture of Flora, a goddess of flowers and the season of spring of Roman mythology in Twelve Paths (Dvenadtsat Dorozhek) in Old Sylvia in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Sculpture of Terpsichore, muse of music and dance, from Greek mythology with a harp on Twelve Paths (Dvenadtsat Dorozhek) in Old Sylvia in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Common Skullcap (Scutellaria galericulata, Russian name Shlemnik) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Forget-me-not flowers (Myosotis palustris, Russian name Nezabudka) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  St. John s Wort (Hypericum perforatum, Russian name Zveroboy) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Yellow daisy Anthemis tinctoria (Russian name Pupavka) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Fruit of Wild Strawberry (Fragaria, Russian name Zemlianika) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Common orchid Orchis maculata (Russian name Yatryshnik) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Monument of grand duke Vyacheslav Constantinovich of Russia (1862 - 1879) (prince Viacheslav Konstantinovich, Slava) in area of Twelve Paths (Dvenadtsat Dorozhek) in Old Sylvia in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010  Pink flowers of Marsh pea (Lathyrus palustris, Russian name China) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Willow leaf (curlytop) smartweed (polygonum lapathifolium) on north shore of Lake Somerville. Texas, September 27, 2008  White flowers of Hoary Alyssum (Berteroa incana, Russian name Ikotnik) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  White flowers of Upright bedstraw (Galium album, Russian name podmarennik) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Flowers of St. John s Wort (Hypericum perforatum, Russian name Zveroboy) on a meadow near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Hoverfly (Syrphidae, Russian name Zhurchalka) on St. John s Wort (Hypericum perforatum) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Flowers on terminal spikes of silver-sheath knotweed (Polygonum argyrocoleon) on a roadside of Salwa Road. Qatar, February 14, 2014  Blooming silver-sheath knotweed (Polygonum argyrocoleon) in a roadside depression of Abu Samra Road in southern Qatar, February 11, 2014  Meadow flower of Yellow Rattle (Cockscomb, Rhinanthus minor, Russian name Pogremok) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010  Woolly burdock (Arctium tomentosum, Russian name Lopukh) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 22, 2015  Goldenrod (Solidago virgaurea, Russian name Zolotarnik) on a meadow in Pavlovsk Park. South from Saint Petersburg, Russia, July 21, 2012  Stinging nettle (Urtica dioica, Russian name Krapiva) in Pavlovsk Park. South from Saint Petersburg, Russia, July 21, 2012  Flowers of woolly burdock (Arctium tomentosum, Russian name Lopukh) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 28, 2017  Green fruits of baneberry (Actaea Spicata, Russian name Voronets) in Pavlovsk Park. South from Saint Petersburg, Russia, July 21, 2012  Spores of some rust fungus from underside of leaves of jumpseed (knotweed, Persicaria virginiana) collected in Sam Houston National Forest near Montgomery. Texas, July 3, 2022  Knotweed (Persicaria) joint on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020  Curlytop smartweed (polygonum lapathifolium) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2008  Spores of some rust fungus from underside of leaves of jumpseed (knotweed, Persicaria virginiana) at low magnification, collected in Sam Houston National Forest near Montgomery. Texas, July 3, 2022  Smartweed (Polygonum) at a cattle drinking pond near a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009  Baneberry (Actaea Spicata, Russian name Voronets)(?) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 24, 2017  Butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 6, 2016  Butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015  Sundew (Drosera rotundifolia, Russian name Rosianka) in Sosnovka Park, Saint Petersburg, Russia, June 28, 2010  Common dandelion (Taraxacum officinale, Russian name Oduvanchik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019  Field mouse-ear (Cerastium arvense, Russian name Yaskolka) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 24, 2017  Wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019  Melampyrum nemorosum (Russian name Ivan Da Marya) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015  Blooming butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021  Inflorescence of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021  Flowers of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 10, 2017  Flower of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015  St. John s Wort (Hypericum perforatum, Russian name Zveroboy) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Nettle (Urtica dioica, Russian name Krapiva) in Old Sylvia in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Blooming Melampyrum nemorosum (Russian name Ivan Da Marya) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Flower of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015  Flowers of Melampyrum nemorosum (Russian name Ivan Da Marya) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Flower buds of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021  Fruit of avens (Geum rivale, Russian name Gravilat) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Cabbage thistle (Cirsium oleraceum, Russian name Bodyak) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Creeping bellflower (Campanula rapunculoides, Russian name Kolokolchik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Arctic starflower (Trientalis europaea, Russian name Sedmichnik) in Sosnovka Park in Saint Petersburg. Russia, June 24, 2010  Seed head of avens (Geum, Russian name Gravilat) in Old Sylvia in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Masterwort plant (Astrantia major, Russian name Zvezdovka) in Old Sylvia in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Yellow flower of common dandelion (Taraxacum officinale, Russian name Oduvanchik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019  Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Old Sylvia in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 6, 2016  Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015  Flowers of butterbur (Petasites hybridus, Russian name Belokopytnik) near Krasnodolinnaya Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 6, 2016  Leaves of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015  Flower of butterbur (Petasites hybridus, Russian name Belokopytnik) near Slavyanka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021 |