![](../../pictures/archives/compress/2023/3352/jpeg/20t.jpg) Shoot of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, March 2, 2023
![](../../pictures/archives/compress/2023/3411/jpeg/17t.jpg) Glossy leaves of water-primrose (Ludwigia) from Lick Creek Park. College Station, Texas, August 8, 2023
![](../../pictures/archives/compress/2021/2997/jpeg/06t.jpg) Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2021/3004/jpeg/10t.jpg) Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 9, 2021
![](../../pictures/archives/compress/2023/3352/jpeg/24t.jpg) Back lit leaves of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, March 2, 2023
![](../../pictures/archives/compress/2023/3352/jpeg/23t.jpg) Young leaves of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, March 2, 2023
![](../../pictures/archives/compress/2023/3413/jpeg/15t.jpg) Seeds of rattle-box water primrose (Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, September 8, 2023
![](../../pictures/archives/compress/2021/3005/jpeg/22t.jpg) Water-primrose (Ludwigia, Onagraceae) in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2021/2997/jpeg/25t.jpg) Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2021/2997/jpeg/07t.jpg) Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2021/2997/jpeg/16t.jpg) Leaves of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2023/3413/jpeg/24t.jpg) Dry seed capsules of rattle-box water primrose (Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, September 8, 2023
![](../../pictures/archives/compress/2021/2997/jpeg/33t.jpg) Nymph of katidid on water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2021/2999/jpeg/21t.jpg) Narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
![](../../pictures/archives/compress/2021/2997/jpeg/34t.jpg) Virescent green metallic bee on water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2023/3416/jpeg/13t.jpg) Seed heads of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, September 13, 2023
![](../../pictures/archives/compress/2021/2999/jpeg/22t.jpg) Blooming narrow-leaf water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, August 4, 2021
![](../../pictures/archives/compress/2021/3006/jpeg/01t.jpg) Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) feeding on water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2021/3006/jpeg/04t.jpg) Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) with a leaf of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2023/3359/jpeg/11t.jpg) 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
![](../../pictures/archives/compress/2023/3360/jpeg/02t.jpg) 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
![](../../pictures/archives/compress/2021/3006/jpeg/03t.jpg) Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) eating a leaf of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2021/3006/jpeg/07t.jpg) Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) with flower buds of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2021/3006/jpeg/02t.jpg) Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) munching a leaf of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2014/1448/jpeg/02t.jpg) Water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 1, 2014
![](../../pictures/archives/compress/2012/1076/jpeg/10t.jpg) Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 7, 2012
![](../../pictures/archives/compress/2014/1457/jpeg/09t.jpg) Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 15, 2014
![](../../pictures/archives/compress/2008/669/jpeg/16t.jpg) Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, September 12, 2008
![](../../pictures/archives/compress/2014/1452/jpeg/15t.jpg) Water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 10, 2014
![](../../pictures/archives/compress/2014/1457/jpeg/11t.jpg) Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 15, 2014
![](../../pictures/archives/compress/2019/2555/jpeg/06t.jpg) Shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, July 21, 2019
![](../../pictures/archives/compress/2019/2555/jpeg/10t.jpg) Shrubby water-primrose (Ludwigia octovalvis) in dew in Lick Creek Park. College Station, Texas, July 21, 2019
![](../../pictures/archives/compress/2012/1074/jpeg/12t.jpg) Shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
![](../../pictures/archives/compress/2008/652/jpeg/07t.jpg) Narrow-leaf water-primrose (Ludwigia octovalvis) with dew in Lick Creek Park. College Station, June 15, 2008
![](../../pictures/archives/compress/2008/651/jpeg/24t.jpg) Sepals of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, June 15, 2008
![](../../pictures/archives/compress/2008/651/jpeg/25t.jpg) Flower of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, June 15, 2008
![](../../pictures/archives/compress/2012/1074/jpeg/10t.jpg) Sepals of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
![](../../pictures/archives/compress/2012/1074/jpeg/11t.jpg) Flower of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
![](../../pictures/archives/compress/2018/2280/jpeg/06t.jpg) Rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, June 3, 2018
![](../../pictures/archives/compress/2021/3082/jpeg/04t.jpg) Shoots of water-primrose (Ludwigia) in frequently flooded area in Lick Creek Park. College Station, Texas, December 16, 2021
![](../../pictures/archives/compress/2021/2993/jpeg/19t.jpg) Blooming rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, July 28, 2021
![](../../pictures/archives/compress/2018/2280/jpeg/12t.jpg) Flowers of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, June 3, 2018
![](../../pictures/archives/compress/2008/650/jpeg/17t.jpg) Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) flower in Lick Creek Park. College Station, Texas, June 8, 2008
![](../../pictures/archives/compress/2021/3005/jpeg/23t.jpg) 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
![](../../pictures/archives/compress/2018/2280/jpeg/05t.jpg) Yellow flower of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, June 3, 2018
![](../../pictures/archives/compress/2024/3618/jpeg/18t.jpg) 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
![](../../pictures/archives/compress/2024/3618/jpeg/19t.jpg) 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
![](../../pictures/archives/compress/2021/2993/jpeg/16t.jpg) Yellow flower of rattle-box water primrose (bushy seedbox, Ludwigia alternifolia) in Lick Creek Park. College Station, Texas, July 28, 2021
![](../../pictures/archives/compress/2021/3012/jpeg/31t.jpg) 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
![](../../pictures/archives/compress/2021/3005/jpeg/24t.jpg) 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
![](../../pictures/archives/compress/2024/3632/jpeg/16t.jpg) 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
![](../../pictures/archives/compress/2022/3255/jpeg/30t.jpg) Shoot of water-primrose (Ludwigia) on shores of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
![](../../pictures/archives/compress/2023/3359/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2023/3359/jpeg/21t.jpg) 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
![](../../pictures/archives/compress/2010/854/jpeg/18t.jpg) Small yellow flower of evening primrose or Ludwigia(?) on Post Oak Trail in Lick Creek Park. College Station, Texas, April 16, 2010
![](../../pictures/archives/compress/2014/1472/jpeg/19t.jpg) Shrubby water-primrose (Ludwigia) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014
![](../../pictures/archives/compress/2021/3002/jpeg/35t.jpg) Shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
![](../../pictures/archives/compress/2014/1471/jpeg/08t.jpg) Shrubby water-primrose (Ludwigia octovalvis) in Watson Rare Native Plant Preserve. Warren, Texas, August 2, 2014
![](../../pictures/archives/compress/2014/1471/jpeg/17t.jpg) Shrubby water-primrose (Ludwigia octovalvis) near a pond in Watson Rare Native Plant Preserve. Warren, Texas, August 2, 2014
![](../../pictures/archives/compress/2009/788/jpeg/26t.jpg) Small species 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
![](../../pictures/archives/compress/2014/1471/jpeg/18t.jpg) Flower bracts of shrubby water-primrose (Ludwigia octovalvis) near a pond in Watson Rare Native Plant Preserve. Warren, Texas, August 2, 2014
![](../../pictures/archives/compress/2008/681/jpeg/11t.jpg) Tetrameric flower of water-primrose willowherb (Ludwigia) near Onion Creek in McKinney Falls State Park. Austin, Texas, October 26, 2008
![](../../pictures/archives/compress/2012/1063/jpeg/12t.jpg) Water-primrose (Ludwigia) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
![](../../pictures/archives/compress/2012/1063/jpeg/07t.jpg) Flower of water-primrose (Ludwigia) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
![](../../pictures/archives/compress/2019/2528/jpeg/12t.jpg) Shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
![](../../pictures/archives/compress/2020/2769/jpeg/31t.jpg) Water primrose (Ludwigia) in Bastrop State Park. Bastrop, Texas, September 10, 2020
![](../../pictures/archives/compress/2019/2528/jpeg/18t.jpg) Flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
![](../../pictures/archives/compress/2019/2529/jpeg/14t.jpg) Blooming shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
![](../../pictures/archives/compress/2008/661/jpeg/21t.jpg) Water-primrose (Ludwigia) in Ladybird Johnson Wildflower Center. Austin, Texas, July 26, 2008
![](../../pictures/archives/compress/2008/653/jpeg/16t.jpg) Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2008
![](../../pictures/archives/compress/2019/2529/jpeg/03t.jpg) 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
![](../../pictures/archives/compress/2019/2529/jpeg/01t.jpg) Yellow flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
![](../../pictures/archives/compress/2022/3255/jpeg/31t.jpg) Glossy leaves of water-primrose (Ludwigia) on shores of Lake Somerville near Birch Creek Unit of Somerville Lake State Park. Texas, October 4, 2022
![](../../pictures/archives/compress/2021/2895/jpeg/15t.jpg) Shoots of water-primrose (Ludwigia octovalvis)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 29, 2021
![](../../pictures/archives/compress/2021/3019/jpeg/25t.jpg) Water-primrose (Ludwigia) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
![](../../pictures/archives/compress/2023/3411/jpeg/27t.jpg) Shoot of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
![](../../pictures/archives/compress/2021/3022/jpeg/20t.jpg) 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
![](../../pictures/archives/compress/2021/2899/jpeg/12t.jpg) 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
![](../../pictures/archives/compress/2021/2899/jpeg/07t.jpg) 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
![](../../pictures/archives/compress/2021/2899/jpeg/05t.jpg) 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
![](../../pictures/archives/compress/2010/891/jpeg/26t.jpg) Water-primrose (Ludwigia) in a ditch in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, September 25, 2010
![](../../pictures/archives/compress/2022/3172/jpeg/27t.jpg) Shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
![](../../pictures/archives/compress/2021/2994/jpeg/11t.jpg) Shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
![](../../pictures/archives/compress/2019/2464/jpeg/02t.jpg) Rosette of leaves of floating primrose willow (Ludwigia peploides) at water s surface at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2019
![](../../pictures/archives/compress/2021/3005/jpeg/25t.jpg) Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) feeding on Ludwigia in Lick Creek Park. College Station, Texas, August 12, 2021
![](../../pictures/archives/compress/2014/1452/jpeg/10t.jpg) Floating primrose-willow (Ludwigia peploides) near a pond in Central Park. College Station, Texas, July 8, 2014
![](../../pictures/archives/compress/2018/2259/jpeg/20t.jpg) Spreading aquatic plant yellow water-weed (Ludwigia peploides) in a creek in Bee Creek Park. College Station, Texas, May 14, 2018
![](../../pictures/archives/compress/2021/2994/jpeg/12t.jpg) Flower of shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
![](../../pictures/archives/compress/2023/3374/jpeg/13t.jpg) Shoot of horseweed(?) in Lick Creek Park. College Station, Texas, March 31, 2023
![](../../pictures/archives/compress/2023/3361/jpeg/22t.jpg) Shoot of frostweed in Lick Creek Park. College Station, Texas, March 10, 2023
![](../../pictures/archives/compress/2023/3368/jpeg/11t.jpg) Some green shoot in Lick Creek Park. College Station, Texas, March 20, 2023
![](../../pictures/archives/compress/2021/2968/jpeg/11t.jpg) Shrubby water-primrose (Ludwigia octovalvis) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
![](../../pictures/archives/compress/2021/2994/jpeg/20t.jpg) Close-up of a flower of shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
![](../../pictures/archives/compress/2023/3369/jpeg/05t.jpg) Shoot of greenbrier (Smilax) in Lick Creek Park. College Station, Texas, March 23, 2023
![](../../pictures/archives/compress/2023/3369/jpeg/02t.jpg) Shoot of blackberry (Rubus) in Lick Creek Park. College Station, Texas, March 23, 2023
![](../../pictures/archives/compress/2023/3374/jpeg/14t.jpg) Shoot of giant ragweed in Lick Creek Park. College Station, Texas, March 31, 2023
![](../../pictures/archives/compress/2023/3368/jpeg/13t.jpg) Shoot of mustang grape in Lick Creek Park. College Station, Texas, March 20, 2023
![](../../pictures/archives/compress/2023/3361/jpeg/18t.jpg) Shoot of greenbrier (Smilax) in Lick Creek Park. College Station, Texas, March 10, 2023
![](../../pictures/archives/compress/2023/3369/jpeg/01t.jpg) Showy evening primrose (Oenothera speciosa) in Lick Creek Park. College Station, Texas, March 23, 2023
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