 Ragweed (Ambrosia artemisiifolia) in Lick Creek Park. College Station, Texas, October 23, 2013
 Common ragweed (Ambrosia artemisiifolia) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 1, 2024
 Ragweed (Ambrosia) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 30, 2008
 Butterfly sleeping on ragweed (Ambrosia) in Lick Creek Park. College Station, Texas, September 29, 2010
 Blooming giant ragweed (Ambrosia trifida) in Lick Creek Park. College Station, Texas, September 22, 2021
 Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Common ragweed (Ambrosia artemisiifolia) at Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Distorted leaves of common ragweed (Ambrosia artemisiifolia) with galls caused by eriophyid mites in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, August 25, 2021
 Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 2022
 Common ragweed (Ambrosia artemisiifolia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Pollinating greenish-yellow staminate blossoms of common ragweed (Ambrosia artemisiifolia) near Meyersville Road, with a silken strand from a spider mite. North from Chappell Hill, Texas, September 21, 2008
 Common ragweed (Ambrosia artemisiifolia) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Ragweed (Ambrosia) in Lick Creek Park. College Station, Texas, October 3, 2008
 Leaves of common ragweed (Ambrosia artemisiifolia) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, August 4, 2018
 Blooming giant ragweed (Ambrosia trifida) in Bee Creek Park. College Station, Texas, September 28, 2021
 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
 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) with galls caused by eriophyid mites 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
 Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 in Sam Houston National Forest. Texas, August 21, 2020
 Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 in Sam Houston National Forest. Texas, July 12, 2020
 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
 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 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
 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
 Purple bindweed and ragweed (Ambrosia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 28, 2022
 Giant ragweed (Ambrosia trifida) on Kiwanis Nature Trail. College Station, Texas, April 20, 2023
 Butterfly on ragweed in Lick Creek Park. College Station, Texas, September 29, 2010
 Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Seedling of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Giant ragweed (Ambrosia trifida) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
 Wilted giant ragweed (Ambrosia trifida) under 2,4-D Ester(?) herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Blooming giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Dry plant of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 9, 2023
 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
 Leaf of giant ragweed(?) with frost near the creek in Bee Creek Park. College Station, Texas, January 4, 2022
 Growth of ragweed (Ambrosia) under power lines in Lake Bryan Park. Bryan, Texas, July 26, 2013
 Shoot of giant ragweed in Lick Creek Park. College Station, Texas, March 31, 2023
 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
 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
 Wilted giant ragweed (Ambrosia trifida) after application of a herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
 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
 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
 Horseweed(?) in Lick Creek Park. College Station, Texas, September 26, 2022
 Some sedge (Cyperus) in Lick Creek Park. College Station, Texas, September 26, 2022
 Sycamore shoots in Lick Creek Park. College Station, Texas, September 29, 2022
 Some grass on Post Oak Trail in Lick Creek Park. College Station, Texas, September 26, 2022
 Some common grass in bloom in Lick Creek Park. College Station, Texas, September 26, 2022
 Old bird watching blinds in Lick Creek Park. College Station, Texas, September 29, 2022
 Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 26, 2022
 Rattlebush (Sesbania drummondii) in Lick Creek Park. College Station, Texas, September 29, 2022
 Seeds of cattail (Typha) in Lick Creek Park. College Station, Texas, September 29, 2022
 Shoot of greenbrier (Smilax) in Lick Creek Park. College Station, Texas, September 26, 2022
 Spores of polypore mushroom Abortiporus biennis(?) (or may be A. albida from 8/28/2022 ??) from a fallen oak branch under a microscope with x40 objective (spore print whitish, may be light brown) collected in Lick Creek Park. College Station, Texas, September 1, 2022
 Fluffy head of cattail (Typha) in Lick Creek Park. College Station, Texas, September 29, 2022
 Wand blackroot (Pterocaulon virgatum) in Lick Creek Park. College Station, Texas, September 26, 2022
 Peeling bark of river birch in Lick Creek Park. College Station, Texas, September 29, 2022
 Climbing hempvine (Mikania scandens) in Lick Creek Park. College Station, Texas, September 29, 2022
 Gills of a mushroom Xeromphalina tenuipes in Lick Creek Park. College Station, Texas, September 1, 2022
 Bastard pennyroyal (Trichostema dichotomum) in Lick Creek Park. College Station, Texas, September 26, 2022
 Some slender grass on Post Oak Trail in Lick Creek Park. College Station, Texas, September 26, 2022
 Little bluestem grass (Schizachyrium scoparium) in Lick Creek Park. College Station, Texas, September 26, 2022
 Blooming cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 Flowers of little bluestem grass (Schizachyrium scoparium) in Lick Creek Park. College Station, Texas, September 26, 2022
 Trunk of river birch (Betula nigra) in Lick Creek Park. College Station, Texas, September 29, 2022
 Underside of Agaricus mushroom on sewage line right-of-way in Lick Creek Park. College Station, Texas, September 12, 2022
 Foxtail millet grass (Setaria italica) in Lick Creek Park. College Station, Texas, September 26, 2022
 Agaricus mushrooms under sumpweed on sewage line right-of-way in Lick Creek Park. College Station, Texas, September 12, 2022
 Green burs of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 Salt-marsh fleabane (Pluchea odorata) in Lick Creek Park. College Station, Texas, September 26, 2022
 Close-up of some slender grass on Post Oak Trail in Lick Creek Park. College Station, Texas, September 26, 2022
 Spike of some slender grass on Post Oak Trail in Lick Creek Park. College Station, Texas, September 26, 2022
 Seed head of a plant of aster family in Lick Creek Park. College Station, Texas, September 29, 2022
 Spores of Leucocoprinus cretaceus mushroom collected in Lick Creek Park. College Station, Texas, September 12, 2022
 Some brown Parasola mushrooms on wood chips in Lick Creek Park. College Station, Texas, September 1, 2022
 Head of cattail (Typha) with fluffy seeds in Lick Creek Park. College Station, Texas, September 29, 2022
 Caps of polypore mushroom Abortiporus biennis(?) in Lick Creek Park. College Station, Texas, September 1, 2022
 Groundsel bush (seepwillow, Baccharis halimifolia) in Lick Creek Park. College Station, Texas, September 29, 2022
 Flowers of purple bindweed (Ipomoea cordatotriloba) in Lick Creek Park. College Station, Texas, September 29, 2022
 Grey inkcap mushrooms (Coprinopsis cinerea) on mulch in Lick Creek Park. College Station, Texas, September 6, 2022
 Spores of polypore mushroom Abortiporus biennis, collected a day before in Lick Creek Park. College Station, Texas, September 21, 2022
 Tiger sawgill mushrooms (Lentinus tigrinus) on a low stump in Lick Creek Park. College Station, Texas, September 1, 2022
 Mushroom Xeromphalina tenuipes on a fallen wood stick in Lick Creek Park. College Station, Texas, September 1, 2022
 Spores of fungus Inonotus andersonii from oak bark, collected a day before in Lick Creek Park. College Station, Texas, September 21, 2022
 Polypore mushrooms Abortiporus biennis on oak tree roots in Lick Creek Park. College Station, Texas, September 20, 2022
 Some tiny mite under a microscope, fallen from a polypore collected a day before in Lick Creek Park. College Station, Texas, September 21, 2022
 Close-up of seeds of wand blackroot (Pterocaulon virgatum) in Lick Creek Park. College Station, Texas, September 29, 2022
 Cross section of Agaricus mushrooms on sewage line right-of-way in Lick Creek Park. College Station, Texas, September 12, 2022
 King ranch bluestem grass (Bothriochloa ischaemum) in Lick Creek Park. College Station, Texas, September 26, 2022
 Close-up of a spike of some slender grass on Post Oak Trail in Lick Creek Park. College Station, Texas, September 26, 2022
 Goldenhaired inkcap mushrooms (Parasola auricoma) on a lawn in Lick Creek Park. College Station, Texas, September 1, 2022
 Brown caps of some Parasola mushrooms on wood chips in Lick Creek Park. College Station, Texas, September 1, 2022
 Pleated inkcap mushrooms (Parasola plicatilis(?)) on a lawn in Lick Creek Park. College Station, Texas, September 1, 2022
 Fluffy seeds of wand blackroot (Pterocaulon virgatum) in Lick Creek Park. College Station, Texas, September 26, 2022
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