Interior of Birch House in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
Birch alley in eastern part of Sosnovka Park. Saint Petersburg, Russia, August 14, 2007
Corner interior of Birch House in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
Shaggy Portulaca (Rose purslane, Portulaca pilosa) on a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009
Pond Karasiovoe Ozero and birches in northern area of Sosnovka Park in mist. Saint Petersburg, Russia, June 26, 2010
Birches on a small island on Beloe Lake in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, July 5, 2010
Plafond of Birch House in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
Birches along a ditch in Sosnovka Park in northern Saint Petersburg. Russia, January 29, 2000
Birch trees and logs in Sosnovka Park. Saint Petersburg, Russia, May 30, 2009
A birch alley in Sosnovka Park near crossing of Svetlanovskiy and Tikhoretskiy Prospect. Saint Petersburg, Russia, September 3, 2002
Gulf Fritillary (Agraulis vanillae) butterfly on a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009
Birch alley in far end of Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
Bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 24, 2010
Turnsole (Heliotropium indicum) with a small beetle 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
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
Back lit birch forest with blueberry bushes in Sosnovka Park. Saint Petersburg, Russia, May 30, 2009
Birch alley in Sosnovka Park in mist. Saint Petersburg, Russia, June 26, 2010
A narrow birch alley in Sosnovka Park. Saint Petersburg, Russia, April 10, 1999.
Birch circle (Krug Belyh Berioz) in far end of Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
A narrow birch alley over a marshy forest in Sosnovka Park. Saint Petersburg, Russia, April 11, 1999.
Birches and pines in snow in Sosnovka Park. Saint Petersburg, Russia, December 19, 2005
Birch alley in central part of Sosnovka Park. Saint Petersburg. Russia, September 9, 2007
Birch Gates in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
Small specie of Water-primrose (Ludwigia) 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
A. V. Sergeev among birches in Sosnovka Park with evening fog. Saint Petersburg, Russia, April 15, 1999.
Birch trees in eastern part of Sosnovka Park at morning. Saint Petersburg. Russia, September 9, 2007
Birch and mountain ash trees in Sosnovka Park. Saint Petersburg, Russia, May 31, 2009
Swamp and birch alley along Tioplaya River in a remote area Zverinets of Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, July 5, 2010
Birch Island near north-east shore of Beloe Lake in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
Turnsole (Heliotropium indicum) 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
Krug Belykh Berioz (Circle of White Birches) in Pavlovsk Park. Sankt Petersburg, Russia, October 11, 2000
Birch forest in northern area of Sosnovka Park in mist. Saint Petersburg, Russia, June 26, 2010
Birch alley in Sosnovka Park. Sankt Petersburg, Russia, September 26, 2000
Roots of birches on an alley in Sosnovka Park. Sankt Petersburg, Russia, September 26, 2000
Logs in a wall of Birch House in Gatchina Park. Gatchina, a suburb of Saint Petersburg, Russia, June 20, 2009
Birches and logs in Sosnovka Park. Sankt Petersburg, Russia, September 26, 2000
A.S. in front of birches in Sosnovka Park. Saint Petersburg, Russia, February 7, 2000
Exfoliating bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 24, 2010
Film-like papery peeling curls of bark of river birch (Betula nigra) on Deer Run Trail in Lick Creek Park. College Station, Texas, August 28, 2008
Exfoliating bark of river birch (Betula nigra) on Deer Run Trail in Lick Creek Park. College Station, Texas, August 28, 2008
Brown and pinkish papery strips of bark of river birch (Betula nigra) on Deer Run Trail in Lick Creek Park. College Station, Texas, August 28, 2008
Ball rolling dung beetle (Scarabeus) on a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009
Fire ants eating a grasshopper on a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, August 29, 2009
Birches near Slavyanka River in Pavlovsk Park, suburb of Saint Petersburg. Russia, May 15, 2011
Birch House in Gatchina Park, suburb of Saint Petersburg. Russia, May 16, 2011
Birch forest in Gatchina Park, suburb of Saint Petersburg. Russia, May 16, 2011
Trail in a birch forest in Gatchina Park, suburb of Saint Petersburg. Russia, May 16, 2011
Narrow birch alley in Sosnovka Park. Saint Petersburg, Russia, May 17, 2011
Road through birch forest in Sosnovka Park. Saint Petersburg, Russia, May 17, 2011
Road in a birch forest in Sosnovka Park. Saint Petersburg, Russia, May 17, 2011
Birches on shore of Gulf of Finland in Alexandria Park in Peterhof, west from Saint Petersburg. Russia, June 6, 2011
Birch bridge of Farm Palace in Alexandria Park in Peterhof, west from Saint Petersburg. Russia, June 6, 2011
Birch trees in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, June 14, 2011
Dry buttonbush on a shore of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Dry vegetation on a shore of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Sedges on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Old tree stump on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Rotting log on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Rattlebush colonizing dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Dying vegetation on shores of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Animal tracks on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Caked mud on dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
Animal tracks on caked mud of dry bottom of Somerville Lake near Birch Creek Park. Texas, August 21, 2011
A trail near Somerville Lake in Birch Creek State Park. Texas, August 21, 2011
Oak forest in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Dry trees in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Dry bottom of Somerville Lake with sedges in Birch Creek Park. Texas, September 17, 2011
Sunrise over Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Plastic boat Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Dry grass in Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Dry sedge in Somerville Lake in Birch Creek Park. Texas, September 17, 2011
A sheel in dried mud of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Caked mud of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Caked mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Dry mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Cracked mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Caked mud in Somerville Lake in Birch Creek Park at sunrise. Texas, September 17, 2011
Cracks in mud on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
Emerging rattlebush on the bottom of Somerville Lake in Birch Creek Park. Texas, September 17, 2011
A trail in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Dry vegetation in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Oak forest in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Dead trees in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Dead tree trunks in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
A trail through brown vegetation in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Leaf cutter ant highway in Birch Creek Park near Somerville Lake. Texas, September 17, 2011
Bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Exfoliating bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Brown and pinkish papery strips of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Exfoliating papery strips of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Film-like papery peeling curls of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Trunk of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Texture of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Peeling curls of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Papery peeling curls of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Papery strips of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Papery texture of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Pinkish papery texture of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Peeling of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Papery strips of bark of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, December 18, 2011
Spiderwort (Tradescantia) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
A fly on spiderwort (Tradescantia) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Beebalm (Monarda punctata) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Sage (Salvia) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Dayflower (Commelina) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Blooming beebalm (Monarda punctata) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Flowers of beebalm (Monarda punctata) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Central part of a flower of white prickly poppy in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Flowers of spiderwort (Tradescantia) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
A bug on spiderwort (Tradescantia) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Katydid on white prickly poppy in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Wild Carrot (Daucus pusillus) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Venus looking glass (Triodanis perfoliata) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Young leaves of a plant of pea family in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Some blooming bush in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Ants eating a dead copperhead snake in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Annual blue-eyed grass (Sisyrinchium rosulatum) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Bracted fanpetals (Sida ciliaris) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Phlox flowers in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
White prickly poppy (Argemone albiflora) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Red firewheel flower (Gaillardia amblyodon) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Bladderpod flower (Lesquerella) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Stamens of a flower of white prickly poppy in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Back lit bladderpod flower (Lesquerella) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Pink phlox flowers in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Turtle hiding its head in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Oil pump in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Yellow flowers of prickly pears (Opuntia) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
White prickly poppy on shores of the lake in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Flower of Baby blue eyes (Nemophila phacelioides) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Flower of Venus looking glass (Triodanis perfoliata) in Birch Creek Unit of Lake Somerville State Park, April 29, 2012
Brown hawk moth near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Brown hawk moth sleeping on a dry coneflower near Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Buttonbush (Cephalanthus occidentalis) on a shore of the lake in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Flower of buttonbush (Cephalanthus occidentalis) on a shore of the lake in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Globular flower of buttonbush (Cephalanthus occidentalis) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Marsh specie of morning glory (Ipomoea) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Salt-marsh fleabane (Pluchea odorata, Pluchea purpurescens) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Marsh mallow (Halbert-leaved hibiscus, Hibiscus militaris) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Green flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Close up of salt-marsh fleabane (Pluchea odorata, Pluchea purpurescens) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Salt-marsh fleabane (Pluchea odorata, Pluchea purpurescens) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Climbing hempvine (Mikania scandens) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Close up of staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Collected fruits of persimmon (Diospyros virginiana) on a log in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Nest of paper wasps on a log in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Purple gerardia (false foxglove, Agalinis purpurea(?)) on roadside in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Bracted fanpetals (Sida ciliaris) on a road in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Blue waterleaf (Hydrolea ovata) near a small pond in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Flowers of blue waterleaf (Hydrolea ovata) in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Flowers of bracted fanpetals (Sida ciliaris) on a road in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Morning Glory (Ipomoea cordatotriloba) in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
Berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Green and blue berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Dark blue berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Cluster of berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Galls under an oak leaf in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Lichen on a twig in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Green berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Lichens and green berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Wild buckwheat (Yerba colorado, Eriogonum) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Flowers of wild buckwheat (Yerba colorado, Eriogonum) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Rusty flowers of wild buckwheat (Yerba colorado, Eriogonum) in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Oak galls on a trail in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Accumulation of oak galls on a trail in Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Buffalo gourd (calabazilla, Cucurbita foetidissima) taken from Birch Creek Unit of Somerville Lake State Park. Texas, November 11, 2012
Berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Cluster of berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Blue berries of upland swamp-privet (Forestiera ligustrina) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Coralberry (Indian currant, Symphoricarpos orbiculatus) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Possum-haw holly (deciduous yaupon, Ilex decidua) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Road in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Road around the lake in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Winter forest in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Dehisced seedpod (follicle) releasing seeds (silky white pappus) of angularfruit milkvine (anglepod, Matelea gonocarpos) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Fluffy seeds of angularfruit milkvine (anglepod, Matelea gonocarpos) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Dehisced seedpod (follicle) of angularfruit milkvine (anglepod, Matelea gonocarpos) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Winter rosette of Hymenopappus artemisiifolius (Old plainsman)(?) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Winter rosette of milk(?) thistle in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Some winter rosette in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Prickly seeds of Buffalo bur (Solanum rostratum) in Birch Creek Unit of Somerville Lake State Park. Texas, December 22, 2012
Birch alley in Sosnovka Park. Saint Petersburg, Russia, February 7, 2013
