 Green milkweed (Antelope horns, asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Green milkweed (Antelope horns, asclepias viridis) with aphids in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Flower buds of green milkweed (Antelope horns, asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Fruits of green milkweed (Antelope horns, asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Green milkweed (Antelope horns, asclepias viridis) near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Green milkweed (Antelope horns, asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2020
 Green milkweed (Antelope horns, asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 14, 2008
 Green milkweed (Antelope horns, asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, April 4, 2009
 Antelope horns milkweed (Asclepias viridis) in Washington-on-the-Brazos Historic Site, near Loop trail. Washington, Texas, March 30, 2008
 Opening flower of Antelope horns milkweed (Asclepias viridis) in Washington-on-the-Brazos Historic Site, near Loop trail. Washington, Texas, March 30, 2008
 Antelope horns (asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 10, 2008
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Nymphs of red milkweed bugs on green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Large milkweed bug (Oncopeltus fasciatus) on Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Milkweed bugs on seed pods of green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2020
 Large Milkweed Bug (Oncopeltus fasciatus) on Green milkweed (Asclepias viridis) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2010
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 25, 2013
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 28, 2014
 Green milkweed (Asclepias viridis) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2013
 Seed pods of green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2020
 Assassin bug (Apiomerus) on green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 1, 2010
 Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site, near Loop Trail. Washington, Texas, April 5, 2008
 Flowers of green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Green milkweed (Asclepias viridis) in bloom on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Opening flowers of Green milkweed (Asclepias viridis) in Washington-on-the-Brazos State Historic Site, near Loop Trail. Washington, Texas, April 5, 2008
 Flowers of green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Seed pods of green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Blooming green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Flower heads of green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Monarch caterpillars feeding on green milkweed (Asclepias viridis) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Closed flowers of Antelope horns milkweed with a hairy seed in Washington-on-the-Brazos Historic Site, near Loop trail. Washington, Texas, March 30, 2008
 Inflorescence of Zizotes milkweed (Hierba de Zizotes, Asclepias oenotheroides) near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Green flowers of Zizotes milkweed (Asclepias oenotheroides) near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Flower of green milkweed (Antelope horns, asclepias viridis) in Lick Creek Park. College Station, Texas, May 5, 2008
 Green milkweed (Antelope horns, asclepias viridis) in Lick Creek Park. College Station, Texas, April 5, 2018
 Green milkweed (Antelope horns, Asclepias viridis) in Lick Creek Park. College Station, Texas, April 5, 2018
 Green milkweed (Antelope horns, asclepias viridis) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 18, 2018
 Zizotes milkweed (Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Green milkweed (Antelope horns, asclepias viridis) on Yaupon Loop Trail in Lick Creek Park. College Station, Texas, April 21, 2019
 Zizotes milkweed (Asclepias oenotheroides) near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Green milkweed (Antelope horns, asclepias viridis) in morning dew in Lake Bryan Park, on a trail on an island. Bryan, Texas, April 14, 2009
 White-fringed weevil (Naupactus) beetle on green milkweed (Antelope horns, asclepias viridis) in Lake Bryan Park. Bryan, Texas, October 2, 2009
 Zizotes milkweed (Hierba de Zizotes, Asclepias oenotheroides) on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Flowers of Zizotes milkweed (Hierba de Zizotes, Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Blooming Zizotes milkweed (Hierba de Zizotes, Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Zizotes milkweed (Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Immature katydid on green milkweed near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Flowers of Zizotes milkweed (Asclepias oenotheroides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Seeds of Antelope horns milkweed (Asclepias viridis) in Lick Creek Park. College Station, Texas, May 17, 2018
 Zizotes milkweed (Hierba de Zizotes, Asclepias oenotheroides) with oleander aphids in a dried pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Seed head of Antelope horns milkweed (Asclepias viridis) in Lick Creek Park. College Station, Texas, May 17, 2018
 Fluffy seeds of Antelope horns milkweed (Asclepias viridis) in Lick Creek Park. College Station, Texas, May 17, 2018
 Milkweed (Asclepias), opened seedpod with seeds and fluff emerging, in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 12, 2010
 Dehisced seedpod releasing seeds, with attached coma (tuft of fluff) of milkweed (Asclepias) on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 Uncoiling inflorescence of turnsole (Heliotropium indicum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 25, 2012
 Uncoiling inflorescence of turnsole (Heliotropium indicum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 23, 2012
 Uncoiling inflorescence of turnsole (Heliotropium indicum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 9, 2011
 Milkweed seeds in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 10, 2011
 Tuft of fluff of milkweed seeds in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 10, 2011
 Nymph of large milkweed bug (Oncopeltus fasciatus) on milkweed seeds in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Frightened caterpillar spitting green fluid in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 4, 2012
 Vervain (Verbena) inflorescence in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 14, 2008
 Green flowers with pollen of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Green nuts on a pecan tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2020
 Inflorescence of scarlet spiderling (Boerhavia diffusa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 21, 2008
 Inflorescence of sprawling signalgrass (Urochloa reptans) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Fly sitting on inflorescence of Turnsole (Heliotropium indicum) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 15, 2009
 Inflorescence of giant reed (Arundo donax) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Uncurling inflorescence of Turnsole (Heliotropium indicum) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 15, 2009
 Milkweed seeds in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 6, 2009
 Disturbed caterpillar of black swallowtail butterfly (Papilio polyxenes) in defensive pose showing orange horns (osmeterium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 23, 2010
 Dead gar fish and green slime in drying pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 23, 2011
 Emerging inflorescence of giant reed (Arundo donax) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Ladybug and millipede on milkweed in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2010
 Large Milkweed Bug (Oncopeltus fasciatus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Green lynx spider on bull nettle (mala mujer) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Green lynx spider on bull nettle near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Green grasshopper on Amaranthus albus(?) near a gate at Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Sandburs spikelet in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Some back lit leaf in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Grasshopper on rugweed in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Female inflorescence of creeping lovegrass (Eragrostis reptans) in a dried pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 12, 2020
 Milkweed seeds with attached coma (tuft of fluff) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Mating red milkweed beetles (Tetraopes tetrophthalmus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 4, 2009
 Puncturevine (Caltrop, Tribulus terrestris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Golden eye lichen (Teloschistes chrysophthalmus)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Green carpetweed (Indian Chickweed, Mollugo verticillata) on sand of Ferry Road in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Caterpillar of black swallowtail butterfly (Papilio polyxenes) in defensive pose retracting orange horns (osmeterium) and showing three pairs of front legs in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 23, 2010
 Side view of a female inflorescence of creeping lovegrass (Eragrostis reptans) in a dried pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 12, 2020
 Ovary of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Bull nettle (mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Puncturevine (Caltrop, Tribulus terrestris) with a yellow flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Green grasshopper in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Green grasshopper in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2010
 Green leaves of magnolia in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
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