 Giant ragweed (Ambrosia trifida) with half-white leaves at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 14, 2024
 Galls (hollow blisters) on leaves of common ragweed (Ambrosia artemisiifolia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Galls caused by eriophyid mites on leaves of common ragweed (Ambrosia artemisiifolia) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Leaves of common ragweed (Ambrosia artemisiifolia) damaged by eriophyid gall mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Distorted leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 Distorted growth of giant ragweed (Ambrosia trifida) under 2,4-D Ester(?) herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Curled leaves of giant ragweed (Ambrosia trifida) under 2,4-D Ester(?) herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Salt moth caterpillar on a leaf of giant ragweed at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 5, 2020
 Dwarf dandelion (Krigia occidentalis) with giant ragweed at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022
 Galls (numerous pale green warts) on leaves of common ragweed (Ambrosia artemisiifolia) caused by eriophyid gall mites at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Dry plant of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 9, 2023
 Giant ragweed (Ambrosia trifida) on Kiwanis Nature Trail. College Station, Texas, April 20, 2023
 Blooming giant ragweed (Ambrosia trifida) in Bee Creek Park. College Station, Texas, September 28, 2021
 Wilted giant ragweed (Ambrosia trifida) after application of a herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
 Blooming giant ragweed (Ambrosia trifida) in Lick Creek Park. College Station, Texas, September 22, 2021
 Dry leaves of giant ragweed (Ambrosia trifida) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Dry plant of giant ragweed (Ambrosia trifida) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
 Giant ragweed (Ambrosia trifida) after application of herbicide that is causing it to wilt and shrivel in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
 Dry stem of giant ragweed (Ambrosia trifida) with fungus-like dots with white hair taken from Bee Creek Park. College Station, Texas, December 9, 2020
 Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Shoot of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
 Shoot of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Blooming giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Seedling of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Flower buds of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Green flowers with pollen of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Wilted giant ragweed (Ambrosia trifida) under 2,4-D Ester(?) herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Oak skeletons on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Catkins of elm on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Dry oak and vines on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Old cattle pond on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Dead oak forest on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Hairy shoot of oak on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Shaded path on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Shoot of cypress(?) elm on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Some sedge (Carex) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Some green shoot on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Shoots of winged elm on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Wild turkeys on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Grassy path of a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Shoot of some plant on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Spiderwort (Tradescantia) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Drying gills of a giant panus mushroom (Lentinus levis, Pleurotus levis) taken from a dry oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 14, 2020
 Common duckweed (Lemna minor) and giant duckweed (Spirodela polyrhiza) on a flooded trail at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Common duckweed (Lemna minor) together with giant duckweed (Spirodela polyrhiza) on a flooded trail at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Common duckweed (Lemna minor) together with giant duckweed (Spirodela polyrhiza) floating on a flooded trail at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Male wild turkey on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Some hairy rosette of leaves on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Red soots from a dried blackjack oak on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Young hairy leaves of oak on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Young leaves of cypress(?) elm on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Shoot of chinaberry (Melia azedarach) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Some hairy shoot of carrot family on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Some brown moth on a grass blade on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Little quaking grass (Briza minor) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Young leaves of sage (Salvia)(?) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Spider web in dew in frequently flooded area on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Dry last year cocklebur (Xanthium strumarium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Toad flax (Linaria texana) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Drummond sandwort (Arenaria drummondii) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Shoot of gum Bumelia (Sideroxylon lanuginosum) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Flower buds of corn salad on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Drummond sandwort (Arenaria drummondii) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Indian paintbrush (Castilleja indivisa) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Flower buds of a thistle (Cirsium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Blunt pellitory (Parietaria pensylvanica, Urticaceae) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Baby blue eyes (Nemophila phacelioides) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Red petals of Indian paintbrush (Castilleja indivisa) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Showy blue star (Amsonia illustris) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 White prickly poppy (Argemone albiflora) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Remains of dry oaks in frequently flooded area on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Turkey vultures, white pelicans and some birds flying in a flock over the lake on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Flowers of showy blue star (Amsonia illustris) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Flower buds of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Flower buds of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Unfolding flowers of squaw-weed (Senecio ampullaceus) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Flower buds of woolly-white (Hymenopappus artemisiaefolius) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Winecup (Callirhoe) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 View of Somerville Lake from the trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2023
 Skullcap (Scutellaria) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Beebalm and coreopsis at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Some green shoot at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Agaricus mushroom at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Slender vervain (verbena) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Orange coreopsis flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Greenbrier (Smilax) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 29, 2023
 Flower of thistle (Cirsium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Flower of thistle (Cirsium) with a bee at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Leaves of vervain (verbena) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Leaves of coralberry bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Cross section of Agaricus mushroom at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Dry seed pods of some plant of pea family at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Pony beebalm (Monarda pectinata) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Meadow pink (Sabatia campestris) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Dry and opened seed pods of lupinus at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
 Canada wild rye (Elymus canadensis)(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, May 7, 2023
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