 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 (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
 Smartweed (Polygonum) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 10, 2009
 Alligator weed (Alternanthera philoxeroides) near a pond in Central Park. College Station, Texas, July 8, 2014
 Alligator weed (Alternanthera philoxeroides) near a pond in Central Park. College Station, Texas, July 30, 2014
 Flowers of Alligator weed (Alternanthera philoxeroides) near a pond in Central Park. College Station, Texas, July 30, 2014
 Floating primrose-willow (Ludwigia peploides) near a pond in Central Park. College Station, Texas, July 8, 2014
 Yellow flower of floating primrose-willow (Ludwigia peploides) near a pond in Central Park. College Station, Texas, July 8, 2014
 Smartweed (Curly-top knotweed, Polygonum tomentosum, Persicaria lapathifolia, Russian name Gorets) in Pavlovsk Park, south from Saint Petersburg, Russia, June 23, 2010
 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
 Willow leaf (curlytop) smartweed (polygonum lapathifolium) on north shore of Lake Somerville. Texas, September 27, 2008
 Smartweed (Persicaria, Polygonum) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
 Curlytop smartweed (polygonum lapathifolium) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 18, 2008
 Smartweed (Persicaria pensylvanicum, Polygonum pensylvanicum) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 5, 2009
 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
 Spider eating a grasshopper in Central Park. College Station, Texas, July 8, 2014
 Aphids on a leaf of milkweed (Asclepias curassavica) in Central Park. College Station, Texas, July 8, 2014
 Shoot of Heartleaf peppervine (Ampelopsis cordata) in Central Park. College Station, Texas, July 30, 2014
 Soft golden aster (Bradburia pilosa, Chrysopis) in Central Park. College Station, Texas, July 8, 2014
 Back lit soft golden aster (Bradburia pilosa, Chrysopis) in Central Park. College Station, Texas, July 8, 2014
 Slender orange bush lichen (Teloschistes exilis) on a twig in Central Park. College Station, Texas, July 8, 2014
 Smartweed overgrowing dry pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 23, 2011
 Cypress in a pond of Central Park. College Station, Texas, November 13, 2011
 Geese in a pond of Central Park. College Station, Texas, November 20, 2010
 Cypress trees and a pond in Central Park. College Station, Texas, November 20, 2010
 Bald cypress in a pond in Central Park. College Station, Texas, December 12, 2013
 Cypress tree in a pond of Central Park. College Station, Texas, December 5, 2009
 Bald cypress in a pond of Central Park. College Station, Texas, November 13, 2011
 Dry smartweed in a pond near McCain Creek Park at Lake Somerville. Texas, November 12, 2011
 Bald cypress trees in Central Park pond. College Station, Texas, December 5, 2009
 Christmas lights reflected in a pond of Central Park. College Station, Texas, December 17, 2008
 Steamboat Christmas light decoration on a pond in Central Park. College Station, Texas, December 29, 2009
 Alligator weed (Alternanthera philoxerpides) near a pond in Central Park. College Station, Texas, June 15, 2012
 Bald cypress trees in a fishing pond of Central Park. College Station, Texas, December 5, 2009
 Flower of Alligator weed (Alternanthera philoxerpides) near a pond in Central Park. College Station, Texas, June 15, 2012
 Rattlebush (Sesbania drummondii) in Central Park. College Station, Texas, August 4, 2014
 Showy evening primrose (Oenothera speciosa) in Central Park. College Station, Texas, August 4, 2014
 Copper lily (Habranthus texanus) on a lawn in Central Park. College Station, Texas, July 19, 2013
 Small pleated inkcap mushroom (Parasola plicatilis, Coprinus plicatilis) in Central Park. College Station, Texas, August 4, 2014
 Cap of small pleated inkcap mushroom (Parasola plicatilis, Coprinus plicatilis) in Central Park. College Station, Texas, August 4, 2014
 Close up of small pleated inkcap mushroom (Parasola plicatilis, Coprinus plicatilis) in Central Park. College Station, Texas, August 4, 2014
 Blooming silver-sheath knotweed (Polygonum argyrocoleon) in a roadside depression of Abu Samra Road in southern Qatar, February 11, 2014
 Flowers on terminal spikes of silver-sheath knotweed (Polygonum argyrocoleon) on a roadside of Salwa Road. Qatar, February 14, 2014
 Pleated inkcap mushroom (Parasola plicatilis, Coprinus plicatilis) on a lawn in Central Park. College Station, Texas, July 19, 2013
 Horsetail knotweed (Polygonum equisetiforme, local name qadab) in a depression near Salwa Road, south-west from Doha. Qatar, April 23, 2014
 Smartweed leaf-flower (Phyllanthus polygonoides) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, August 8, 2014
 Central part of spider lily in Antique Rose Emporium. Independence, Texas, July 25, 2014
 Central part of coneflower (Echinacea purpurea) in Antique Rose Emporium. Independence, Texas, July 25, 2014
 Pond in Sosnovka Park, with Central Institute of Robotics and Technical Cybernetics (TsNII RTK) in background. Saint Petersburg. Russia, September 9, 2007
 Dry vegetation in Central Park. College Station, Texas, September 14, 2011
 A trail in Central Park. College Station, Texas, September 14, 2011
 Central (Constantin) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021
 Central (Konstantinovsky) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 14, 2016
 Central (Konstantin) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 26, 2016
 Bud of thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Dock (Rumex) in Lemontree Park. College Station, Texas, July 27, 2014
 Dry grass spike in Lemontree Park. College Station, Texas, July 11, 2014
 Ruellia flower in Lemontree Park. College Station, Texas, July 11, 2014
 Greenery on Park Hudson Trail. College Station, Texas, July 4, 2014
 Flowers of Ruellia in Lemontree Park. College Station, Texas, July 11, 2014
 Lamppost on Park Hudson Trail. College Station, Texas, July 4, 2014
 Brown vegetation in Central Park. College Station, Texas, September 14, 2011
 Christmas lights in Central Park. College Station, Texas, November 27, 2010
 Cypress knees in Central Park. College Station, Texas, November 13, 2011
 Central (Constantin) Rozovopavilionny Pond from 11-th Parade Alley in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, May 12, 2021
 View of Central (Konstantinovsky) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 14, 2016
 Pier of Central (Konstantin) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 26, 2016
 Large coneflower in Lick Creek Park. College Station, Texas, July 1, 2014
 Weeds and vines on Park Hudson Trail. College Station, Texas, July 4, 2014
 Overgrown forest on Park Hudson Trail. College Station, Texas, July 4, 2014
 Drying mushroom on mulch in Lemontree Park. College Station, Texas, July 11, 2014
 Bark of water oak in Lick Creek Park. College Station, Texas, July 3, 2014
 Pickerelweed near a creek on Park Hudson Trail. College Station, Texas, July 4, 2014
 Leaves of chinaberry on Park Hudson Trail. College Station, Texas, July 4, 2014
 Ruellia flower on Park Hudson Trail. College Station, Texas, July 7, 2014
 Racoon Run Trail in Lick Creek Park. College Station, Texas, July 3, 2014
 Young leaf near Park Hudson Trail. College Station, Texas, July 24, 2014
 Leaf of peppervine in Lick Creek Park. College Station, Texas, July 10, 2014
 Blister beetle taken from Lick Creek Park. College Station, Texas, July 26, 2014
 Close up of Ruellia flowers in Lemontree Park. College Station, Texas, July 11, 2014
 Bumblebee on thistle in Lick Creek Park. College Station, Texas, July 26, 2014
 Berries of pepperbush in Lick Creek Park. College Station, Texas, July 15, 2014
 Snail on boardwalk of Park Hudson Trail. College Station, Texas, July 24, 2014
 Small fly on a thistle Park Hudson Trail. College Station, Texas, July 14, 2014
 Powderpuff (Mimosa strigillosa) in Lemontree Park. College Station, Texas, July 27, 2014
 Bark beetle taken from Lick Creek Park. College Station, Texas, July 26, 2014
 Passion flower (Passiflora) in Lemontree Park. College Station, Texas, July 11, 2014
 Thistle flower Park Hudson Trail. College Station, Texas, July 14, 2014
 Blooming thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Grape and peppervine on Park Hudson Trail. College Station, Texas, July 4, 2014
 Seeds of thistle in Lick Creek Park. College Station, Texas, July 15, 2014
 Ironclad beetle taken from Lick Creek Park. College Station, Texas, July 26, 2014
 Dry spikelet of grass in Lick Creek Park. College Station, Texas, July 26, 2014
 Northern part of Central (Konstantinovsky) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, October 14, 2016
 North corner of Central (Konstantin) Rozovopavilionny Pond in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 26, 2016
 Central (Konstantin) Rozovopavilionny Pond near 11-th Parade Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, November 1, 2016
 Central (Konstantin) Rozovopavilionny Pond from 12-th Parade Alley in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, June 6, 2017
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