 Black hoverfly Cheilosia on a yellow flower of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Yellow flower of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) with a black hoverfly Cheilosia in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Yellow flower of Lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 14, 2011
 Lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Blooming lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Flowers of lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Back lit flowers of lesser celandine (Ranunculus ficaria, Russian name Chistyak) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Yellow flower of lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Yellow flower of lesser celandine (Ficaria verna, Russian name Chistyak) in a roadside ditch in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Flowers of marsh marigold (kingcup, Caltha palustris, Russian name Kaluzhnitsa) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Back lit Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Close up of Alternate-leaved Golden Saxifrage (Chrysosplenium alternifolium, Russian name Selezionochnik) in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Flower of lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Close up of a flower of lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Back lit flower of lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Multicolored clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Orange and red clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Green and red clay layers in Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Brittlestem mushrooms Psathyrella clivensis(?) at the bottom of Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Brown brittlestem mushrooms Psathyrella clivensis(?) at the bottom of Popovka river canyon in Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 19, 2011
 Close up of Lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 19, 2011
 Flowers of lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Blooming lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Two flowers of lesser celandine (Ficaria verna, Russian name Chistyak) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
 Yellow flower of lesser celandine (Ficaria verna) in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, May 20, 2019
 Valley of Popovka River near Grafskaya Road in area of Pyazelevo near Pavlovsk, south from Saint Petersburg. Russia, May 10, 2019
 Lesser celandine (Ficaria verna) in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, May 20, 2019
 Lesser celandine (Ficaria verna) in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, May 18, 2019
 Lesser celandine (Ficaria verna) and wood anemone (Anemone nemorosa) in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, May 20, 2019
 Yellow flower of common dandelion (Taraxacum officinale, Russian name Oduvanchik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Hoverfly (Syrphidae, Russian name Zhurchalka) on hawkweed flower in Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
 Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) on a meadow in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
 Hoverfly on a flower of Wood cranesbill (Geranium sylvaticum) near Sablinka River in Sablino, 30 miles south from Saint Petersburg. Russia, July 29, 2012
 Flower of lesser Butterfly-orchid (Platanthera bifolia) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
 Flower of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Slavianka River near Black Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Details of a flower of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Flower spike of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Close up of a flower of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Flower of butterbur (Petasites hybridus, Russian name Belokopytnik) near Slavyanka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021
 Close-up of flower of butterbur (Petasites hybridus, Russian name Belokopytnik) near Slavyanka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021
 Close up of a flower of buttercup (Ranunculus, Russian name Liutik) in Lembolovo, 40 miles north from Saint Petersburg. Russia, June 12, 2009
 Hoverfly on a hawkweed flower in Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
 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
 Lesser Butterfly-orchid (Platanthera bifolia) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
 Greater celandine (tetterwort, Chelidonium majus, Russian name Chistotel) in Sablino, south from Saint Petersburg. Russia, May 25, 2017
 Black Bridge of Slavyanka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, June 21, 2017
 Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) in Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
 Common yellow spring flower of coltsfoot (Tussilago farfara, Russian name Mat I Machekha) in Sablino, south from Saint Petersburg. Russia, May 21, 2011
 Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) on a meadow near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Inflorescence of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Fly on flowers of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Yellow flowers of Dark Mullein (Verbascum nigrum, Russian name Koroviak) near Oredezh River near Kezevo. Siverskaya south from Saint Petersburg, Russia, July 20, 2015
 Blooming Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) on a meadow near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 White flowers of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Shoots of meadowsweet (Filipendula ulmaria, Russian name Tavolga) in Tiarlevo near Slavyanka River in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015
 Flower of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015
 Narrow species of flowers of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) near Novinka, 50 miles south from Saint Petersburg. Russia, June 14, 2014
 Flower buds of butterbur (Petasites hybridus, Russian name Belokopytnik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021
 Flower of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015
 Meadow flower of Yellow Rattle (Cockscomb, Rhinanthus minor, Russian name Pogremok) near Zapliusye in Pskov Region south from Saint Petersburg, Russia, June 27, 2010
 Canyon of Tosna River near Sablino, south from Saint Petersburg. Russia, May 21, 2011
 Wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Common dandelion (Taraxacum officinale, Russian name Oduvanchik) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 An oak near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Valley of Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Oak tree near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Valley of Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 End of World Pillar from Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Viskontiev Bridge and Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Oak tree in Valley of Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 White flowers of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Valley of Slavianka River near Pilbashenny Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Krasnaya Dolina (Red Valley) near Slavianka River in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Slavianka River near Novaya Sylvia Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Hoverfly (Syrphidae, Russian name Zhurchalka) west from Deviatkino. Saint Petersburg, Russia, July 20, 2012
 Valley of Slavianka River near Novaya Sylvia Bridge in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Hoverfly (Syrphidae, Russian name Zhurchalka) in fields west from Deviatkino. Saint Petersburg, Russia, July 20, 2012
 Valley of Slavianka River from observation site of Novaya Sylvia in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Yellow lady slipper orchid (Cypripedium calceolus) in a canyon of Lava River. Zhikharevo, east from Saint Petersburg, Russia, June 4, 2011
 Small violet (Viola) flower in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Hoverfly (Syrphidae, Russian name Zhurchalka) on roadside flowers west from Deviatkino. Saint Petersburg, Russia, July 20, 2012
 Common blue violet (Viola) flower in a forest in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 South corner of Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 16, 2019
 Lesser Celandine (fig buttercup flower) near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Hoverfly (Syrphidae) on yellow aster in fields west from Deviatkino, 1 mile north from Saint Petersburg. Russia, July 26, 2012
 Close up of buttercup (Ranunculus, Russian name Liutik) west from Toksovo, 10 miles north from Saint Petersburg, Russia, June 24, 2009
 Hoverfly on an orange flower in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, August 22, 2013
 Yellow eastern pasque flower (Pulsatilla flavescens, wind flower, meadow anemone, prostrel or son trava in Russian) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Yellow eastern pasque flower (Pulsatilla flavescens, wind flower, meadow anemone, prostrel or son trava in Russian) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 14, 2011
 Yellow eastern pasque flower (Pulsatilla flavescens, wind flower, meadow anemone, prostrel or son trava in Russian) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 21, 2015
 Yellow eastern pasque flower (Pulsatilla flavescens, wind flower, meadow anemone, prostrel or son trava in Russian) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 15, 2015
 Yellow eastern pasque flower (Pulsatilla flavescens, wind flower, meadow anemone, prostrel or son trava in Russian) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Slavyanka River in Pavlovsk Park, south from Saint Petersburg. Russia, May 24, 2011
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