 Rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, June 3, 2018
 Blooming rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, July 28, 2021
 Flowers of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, June 3, 2018
 Yellow flower of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, July 28, 2021
 Yellow flower of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, June 3, 2018
 Dry seed capsules of rattle-box water primrose (Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, September 8, 2023
 Seeds of rattle-box water primrose (Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, September 8, 2023
 Shoot of water-primrose (Ludwigia) from Lick Creek Park. College Station, Texas, August 8, 2023
 Shoot of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, March 2, 2023
 Glossy leaves of water-primrose (Ludwigia) from Lick Creek Park. College Station, Texas, August 8, 2023
 Back lit leaves of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, March 2, 2023
 Young leaves of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, March 2, 2023
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, September 12, 2008
 Water primrose (Ludwigia) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024
 Water primrose (Ludwigia) with flower buds both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024
 Fluffy seed heads of soft golden aster (Bradburia pilosa) in Lick Creek Park. College Station, Texas, September 8, 2023
 Water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 1, 2014
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 9, 2021
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 7, 2012
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 15, 2014
 Water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 10, 2014
 Dry seed heads of globe flat sedge (Cyperus echinatus) on Post Oak Trail in Lick Creek Park. College Station, Texas, September 8, 2023
 Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 15, 2014
 Leaves of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Water-primrose (Ludwigia, Onagraceae) in Lick Creek Park. College Station, Texas, August 12, 2021
 Nymph of katidid on water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, July 21, 2019
 Shrubby water-primrose (Ludwigia octovalvis) in dew in Lick Creek Park. College Station, Texas, July 21, 2019
 Shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
 Narrow-leaf water-primrose (Ludwigia octovalvis) with dew in Lick Creek Park. College Station, June 15, 2008
 Flower of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, June 15, 2008
 Sepals of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, June 15, 2008
 Flower of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
 Narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
 Virescent green metallic bee on water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Sepals of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
 Shoots of water-primrose (Ludwigia) in frequently flooded area in Lick Creek Park. College Station, Texas, December 16, 2021
 Blooming narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
 Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) flower in Lick Creek Park. College Station, Texas, June 8, 2008
 Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) with a leaf of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
 Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) feeding on water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
 Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) with flower buds of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
 Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) eating a leaf of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
 Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) munching a leaf of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
 Seed heads of a plant with narrow leaves of aster family in Lick Creek Park. College Station, Texas, April 17, 2023
 Water primrose (Ludwigia) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Greenway Trail. College Station, Texas, October 18, 2024
 Hornworm of Lesser Vine Sphinx Moth (Banded Sphinx Moth, Eumorpha fasciatus) on water-primrose (Ludwigia, Onagraceae) in Lick Creek Park. College Station, Texas, August 12, 2021
 Tiny seed heads of umbellifer plants Tansy dogshade (Limnosciadium pinnatum, Apiaceae), collected from wet area behind sewage treatment plant in Lick Creek Park. College Station, Texas, July 29, 2023
 Dry seed heads in Lick Creek Park. College Station, Texas, May 4, 2011
 Hornworm caterpillar of Lesser Vine Sphinx Moth (Banded Sphinx Moth, Eumorpha fasciatus) on water-primrose (Ludwigia, Onagraceae) in Lick Creek Park. College Station, Texas, August 26, 2021
 Shoot of water-primrose (Ludwigia) and red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Shoot of water-primrose (Ludwigia) and red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Close-up of tiny seed heads of umbellifer plants Tansy dogshade (Limnosciadium pinnatum, Apiaceae), collected from wet area behind sewage treatment plant in Lick Creek Park. College Station, Texas, July 29, 2023
 Back segment with prolegs of hornworm of Lesser Vine Sphinx Moth (Banded Sphinx Moth, Eumorpha fasciatus) on water-primrose (Ludwigia, Onagraceae) in Lick Creek Park. College Station, Texas, August 12, 2021
 Seed heads of cattails (Typha) in Lick Creek Park. College Station, Texas, July 14, 2022
 Fluffy seed heads of cattails (Typha) in Lick Creek Park. College Station, Texas, August 7, 2022
 Dry seed heads of Illinois bundleflower (Desmanthus illinoensis) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Seed heads of soft golden aster (Bradburia pilosa) in Lick Creek Park. College Station, Texas, October 10, 2022
 Green seed heads of fragrant flatsedge (Cyperus odoratus) on a new cutting in Lick Creek Park. College Station, Texas, August 2, 2018
 Seed heads of bunchy, or many-spiked sedge (Cyperus polystachyos) on a new cutting in Lick Creek Park. College Station, Texas, August 2, 2018
 Dry seed heads of spotted beebalm (Monarda punctata) on a sewage line right of way in Lick Creek Park. College Station, Texas, July 18, 2020
 Seed heads of Texas dandelions in Lick Creek Park. College Station, Texas, May 3, 2012
 Dry seed heads of Black eyed susan (Rudbeckia hirta) in dew from Post Oak Trail in Lick Creek Park. College Station, Texas, October 30, 2012
 Water primrose (Ludwigia) in Bastrop State Park. Bastrop, Texas, September 10, 2020
 Young leaves of water-primrose (Ludwigia) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Glossy leaves of water-primrose (Ludwigia) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Small yellow flower of evening primrose or Ludwigia(?) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 16, 2010
 Water-primrose (Ludwigia) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
 Dry seed heads of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Water-primrose (Ludwigia) in a ditch in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, September 25, 2010
 Water primrose with narrow leaves (Ludwigia) in Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Tetrameric flower of water-primrose willowherb (Ludwigia) near Onion Creek in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Fluffy seed head of a dry plant of soft golden aster (Bradburia pilosa) in Lick Creek Park. College Station, Texas, September 8, 2023
 Water-primrose (Ludwigia) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Flower of water-primrose (Ludwigia) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Flower and fluffy seed heads of firewheel (Gaillardia pulchella) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Water primrose (Ludwigia) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight collected on Stubblefield section of Lone Star hiking trail in Sam Houston National Forest. Texas, September 15, 2024
 Shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Flower heads of Drummond wild onion (Allium drummondii) in Lick Creek Park. College Station, Texas, April 17, 2023
 Flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Blooming shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Water-primrose (Ludwigia) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
 Close up of a flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2008
 Yellow flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Shoot of water-primrose (Ludwigia) on shores of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Glossy leaves of water-primrose (Ludwigia) on shores of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
 Shoots of water-primrose (Ludwigia octovalvis)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
 Bushy bluestem (Andropogon glomeratus)(?) in Lick Creek Park. College Station, Texas, September 2, 2020
 Shrubby water-primrose (Ludwigia) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014
 Green leaves of water-primrose (Ludwigia) on a shore of Flag Pond at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Carpet of leaves of water-primrose (Ludwigia) on a shore of Flag Pond at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Green shoots of water-primrose (Ludwigia) on a shore of Flag Pond at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 Shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Shrubby water-primrose (Ludwigia octovalvis) in Watson Rare Native Plant Preserve. Warren, Texas, August 2, 2014
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