 Small white flowers of Bittercress (Cardamine) in Menkovo, south from Saint Petersburg. Russia, June 1, 2011
 Bittercress (Cardamine) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 22, 2011
 White flowers of spring cress (bulbous bittercress, Cardamine bulbosa) in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 White flowers of spring cress (bulbous bittercress, Cardamine bulbosa) in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 Old gas station in Zhiharevo, east from Saint Petersburg. Russia, June 2, 2011
 Petrovsky Bridge in Zhiharevo, east from Saint Petersburg. Russia, June 2, 2011
 Emerging thunderstorm clouds in Zhiharevo, east from Saint Petersburg. Russia, June 2, 2011
 Rapids of Lava River in Zhiharevo, east from Saint Petersburg. Russia, June 2, 2011
 Bittercress (Cardamine) in Udelny Park. Saint Petersburg, Russia, June 8, 2017
 Bittercress (Cardamine) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 5, 2017
 White flowers of hairy bittercress weed (Cardamine hirsuta) in Lick Creek Park. College Station, Texas, January 20, 2020
 White flowers of spring cress (bulbous bittercress, Cardamine bulbosa) on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, February 1, 2020
 White cardamine flowers near a lake in Orekhovo, north from Saint Petersburg. Russia, June 5, 2014
 Dryad s saddle mushrooms (Cerioporus squamosus, Polyporus squamosus, a bracket fungus) on a log in Zhiharevo, east from Saint Petersburg. Russia, June 2, 2011
 Hairy bittercress weed (Cardamine hirsuta, mustard family) with seeds and tiny white flowers in Lick Creek Park. College Station, Texas, February 23, 2024
 Bittercress (Cardamine) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Bittercress (Cardamine) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 22, 2017
 Blooming bittercress (Cardamine) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 10, 2016
 Flowers of Hairy bittercress (Cardamine hirsuta) taken from gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Leaf of Hairy bittercress (Cardamine hirsuta) on white background taken from gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Flowers of spring cress (bulbous bittercress, Cardamine bulbosa) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 20, 2021
 Cardamine flowers near a lake in Orekhovo, north from Saint Petersburg. Russia, June 5, 2014
 Blooming spring cress (bulbous bittercress, Cardamine bulbosa) in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
 White flowers of Foamflower (Tiarella) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 8, 2011
 White flowers of Sand Rock-cress (Cardaminopsis arenosa) near Toksovo, 10 miles north from Saint Petersburg. Russia, June 11, 2011
 Flowers of wild strawberry east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Black-veined white butterfly (Aporia crataegi) east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Flowers of Bird s-eye Speedwell (Veronica chamaedrys) east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 White flowers of Dead-nettle (Lamium) east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 White flowers of geranium near a forest road east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Blue flowers of Bird s-eye Speedwell (Veronica chamaedrys) east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Geranium (storksbill) with white flowers near a forest road east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Leaf of Hairy bittercress (Cardamine hirsuta) taken from gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Plant of Hairy bittercress (Cardamine hirsuta) taken from gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Black-veined white butterfly (Aporia crataegi) on a pink flower east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Pink flowers of Ragged Robin(?) (Lychnis flos-cuculi) east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Geranium (storksbill) plant with white flowers near a forest road east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Hairy bittercress (Cardamine hirsuta) grown as weed in gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 25, 2016
 Rosette of leaves of Hairy bittercress (Cardamine hirsuta) taken from gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Close up of a leaf of Hairy bittercress (Cardamine hirsuta) taken from gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Flowers of Lesser Butterfly-orchid (Platanthera bifolia, Russian name liubka) east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Hairy bittercress (Cardamine hirsuta) grown as weed in wet place in gardens of Sheraton Hotel in West Bay. Doha, Qatar, January 26, 2016
 Cardamine flowers in a swamp in Zverinets Park. Gatchina, a suburb of Saint Petersburg, Russia, May 25, 2021
 Blooming spring cress (bulbous bittercress, Cardamine bulbosa) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 20, 2021
 Black-veined white butterflies (Aporia crataegi, Russian name Boyaryshnitsa) on flowers of Ragged Robin east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Pair of black-veined white butterflies (Aporia crataegi, Russian name Boyaryshnitsa) on flowers of Ragged Robin east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Close up of black-veined white butterflies (Aporia crataegi, Russian name Boyaryshnitsa) on flowers of Ragged Robin east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Black-veined white butterflies (Aporia crataegi, Russian name Boyaryshnitsa) sitting on flowers of Ragged Robin east from Kuzmolovo, north from Saint Petersburg. Russia, June 8, 2014
 Purple cress flowers (Cardamine) with needle like leaves in Dubki Park in Sestroretsk, west from Saint Petersburg. Russia, May 20, 2019
 Hairy bittercress weed (Cardamine hirsuta) on a sandy path below a sewage station in Lick Creek Park. College Station, Texas, January 20, 2020
 Leaves of hairy bittercress weed (Cardamine hirsuta) on a sandy path below a sewage station in Lick Creek Park. College Station, Texas, January 20, 2020
 White flowers of Stellaria in a park of Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2011
 Early blooming winter annual weed hairy bittercress (Cardamine hirsuta) in a shallow depression on side of FS203 near Richards Loop Trail in Sam Houston National Forest. Texas, February 21, 2024
 Small white flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 28, 2011
 White flowers of lily family in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, May 14, 2011
 Purple cress flowers (Cardamine) on a lawn in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, May 18, 2019
 White flowers of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park, suburb of Saint Petersburg. Russia, May 15, 2011
 White flowers of spring cress (Cardamine bulbosa) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 10, 2019
 White flowers of spring cress (Cardamine bulbosa) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020
 White flowers of wood sorrel (Oxalis acetosella, Kislitsa in Russian) in a park of Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2011
 Hairy bittercress weed (Cardamine hirsuta) in a water pool on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 7, 2021
 White phenotype of thistle in fields west from Deviatkino. Saint Petersburg, Russia, June 29, 2011
 White stellaria flower with a fly in Kuzmolovo, 10 miles north from Saint Petersburg. Russia, June 11, 2011
 Hairy bittercress weed (Cardamine hirsuta, mustard family) in a water pool in Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022
 Basal leaves of hairy bittercress weed (Cardamine hirsuta) in a water pool on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 7, 2021
 Flowers of buckbean (Menyanthes) in Lembolovo, 40 miles north from Saint Petersburg. Russia, June 7, 2011
 Stone flowers in Novodevichye Cemetery at Moskovskiy Prospekt. Saint Petersburg, Russia, June 15, 2011
 Various flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 18, 2011
 Flowers of swamp orchid on 69 kilometr near Sosnovo, north from Saint Petersburg. Russia, June 20, 2011
 A fly east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Monastery in Staraya Ladoga. East from Saint Petersburg, Russia, June 4, 2011
 White Stellaria flowers in Udelny Park. Saint Petersburg, Russia, June 8, 2017
 Garlic(?) flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 8, 2011
 Flowers and greenhouses in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 18, 2011
 Flowers of garlic in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 8, 2011
 Pink flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 18, 2011
 Yellow flowers of sunflower family on a beach in Solnechnoe, west from Saint Petersburg. Russia, June 30, 2011
 Amsonia flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 18, 2011
 Black rattlesnake in a canyon. Zhikharevo, east from Saint Petersburg, Russia, June 4, 2011
 Interior of a ruined church. Zhikharevo, east from Saint Petersburg, Russia, June 4, 2011
 Black-veined white butterflies (Aporia crataegi) in Posiolok, 45 miles south from Saint Petersburg. Russia, June 23, 2011
 Two black-veined white butterflies (Aporia crataegi) in Posiolok, 45 miles south from Saint Petersburg. Russia, June 23, 2011
 Flowers of St. John s Wort (Hypericum perforatum) in fields west from Deviatkino. Saint Petersburg, Russia, June 29, 2011
 Saint George s Cathedral in Old (Staraya) Ladoga. Leningrad Region, east from Saint Petersburg, Russia, June 4, 2011
 Melampyrum nemorosum east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Feeding mosquito east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Leaf venation east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Daisy flower east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Green grasshopper east from Toksovo, 10 miles north from Saint Petersburg. Russia, June 17, 2011
 Daisy and buttercup east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Cinquefoil (Potentilla) east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
 Pair of black-veined white butterflies (Aporia crataegi) in Posiolok, 45 miles south from Saint Petersburg. Russia, June 23, 2011
 White flowers of mustard family near railroad in Orekhovo, north from Saint Petersburg. Russia, June 5, 2014
 Some white flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 9, 2014
 Some white flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 9, 2014
 Some white flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 9, 2014
 Some white flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 5, 2017
 Flowers of beach pea (Lathyrus maritimus, Russian name Cheena) in dunes of Solnechnoe, west from Saint Petersburg. Russia, June 30, 2011
 Blue and brown butterflies east from Kuzmolovo, 7 miles north from Saint Petersburg. Russia, June 22, 2011
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