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3371-07. Giant ragweed (Ambrosia trifida) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023

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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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