 Water-primrose (Ludwigia) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 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
 Yellow flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Flower of shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Close-up of a flower of shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 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
 Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 22, 2008
 Water-primrose (Ludwigia) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
 Shrubby water-primrose (Ludwigia octovalvis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 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, July 29, 2021
 Shrubby water-primrose (Ludwigia octovalvis) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, June 22, 2021
 Flower of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 7, 2012
 Winecup flower (Callirhoe) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Dayflower (Commelina) flower in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 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
 Flower of water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Flower of Butterfly pea (Centrosema virginianum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Black eyed susan flower in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
 Flower of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, June 15, 2008
 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
 Black eyed susan flower (Rudbeckia hirta) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Sepals of shrubby water-primrose (Ludwigia octovalvis) in Lick Creek Park. College Station, Texas, June 30, 2012
 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
 Tetrameric flower of water-primrose willowherb (Ludwigia) near Onion Creek in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Shrubby (narrow-leaf) water-primrose (Ludwigia octovalvis) flower in Lick Creek Park. College Station, Texas, June 8, 2008
 Yellow flower of wood sorrel (shamrock, Oxalis dillenii?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
 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
 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
 Jewel beetles (Buprestidae, Acmaeodera amplicollis(?)) on black eyed susan flower in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Hornworm of Banded Sphinx Moth (Eumorpha fasciatus) with flower buds of water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 12, 2021
 Shrubby water-primrose (Ludwigia) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014
 Flower bracts of shrubby water-primrose (Ludwigia octovalvis) near a pond in Watson Rare Native Plant Preserve. Warren, Texas, August 2, 2014
 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
 Small yellow flower of pea family (Pencil flower, Stylosanthes biflora) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 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
 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
 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
 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
 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
 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
 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
 Sunflower bud in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Some plant in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 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
 Skeletonized leaf in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Marks of Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
 Gayfeather (Liatris) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 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
 Forest cutting near a traihead of Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
 Winecup flower (Callirhoe) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Ruellia flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Winecup flower (Callirhoe) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Flower of dewberry at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Commelina flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Sweetgum (Liquidambar) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, August 19, 2012
 Pine trees near Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
 Sunflowers (Helianthus hirsutus?) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Germander (Teucrium canadense) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Fluffy seeds of aster in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Red leaf of sassafras at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, August 19, 2012
 Butterfly pea (Centrosema virginianum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Gayfeather (Liatris) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, August 19, 2012
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 9, 2021
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 15, 2014
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, September 12, 2008
 Water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 1, 2014
 Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
 Water-primrose (Ludwigia) in Lick Creek Park. College Station, Texas, July 10, 2014
 Yellow star-grass flower in burned forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Water-primrose (Ludwigia) in a ditch in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, September 25, 2010
 Flower of dewberry with a stilt bug at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Winecup flower (Callirhoe) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Flower of Palafoxia rosea in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Flower of Ruellia nudiflora on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Blue flower of Commelina on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Pencil flower (Stylosanthes biflora) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Hairy flower of Spiderwort (Tradescantia) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Blue flower of dayflower (Commelina) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Blue flower of Commelina on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Winecup flower (Callirhoe) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Blue flower of Spiderwort (Tradescantia) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Close up of Winecup flower (Callirhoe) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Violet ruella (Ruellia nudiflora) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Macartney rose (Rosa bracteata) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Whorled milkweed (Asclepias verticillata(?)) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Ipomoea cordatotriloba (Morning Glory) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Colombian waxweed (Cuphea carthagenensis) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Flowers of beautyberry (Callicarpa americana) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Muscadine Grape (Vitis rotundifolia) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
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