 Bur of rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 9, 2012
 Burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Green bur of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 24, 2012
 Mature bur of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Staminate flowers of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 16, 2012
 Ripening burs of Rough Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Shoot of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Underside of leaves of cocklebur (Xanthium strumarium) damaged by cocklebur rust fungus (Puccinia xanthii), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Upper and lowers sides of leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Large teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Biseptate teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Details of teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Teliospores (in KOH, low magnification) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium) collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 13, 2023
 Blooming cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 Seeds of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, June 22, 2022
 Green burs of cocklebur (Xanthium strumarium) in Lick Creek Park. College Station, Texas, September 29, 2022
 Staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
 Green flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
 Close up of staminate flowers of cocklebur (Xanthium strumarium) on a shore of Lake Somerville in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 "Porcupine egg" of cocklebur (Xanthium strumarium) near Onion Creek in McKinney Falls State Park. Austin, Texas, October 26, 2008
 Dry last year cocklebur (Xanthium strumarium) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 5, 2023
 Fall colors of horsenettle (Solanum carolinense) in Lick Creek Park. College Station, Texas, November 30, 2012
 Flowers of cocklebur (Xanthium strumarium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
 Bur of cocklebur (Xanthium strumarium) on north shore of Lake Somerville. Texas, September 27, 2008
 Burs of cocklebur (Xanthium strumarium) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
 Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 16, 2020
 Rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 6, 2019
 Rough Cocklebur (Xanthium strumarium) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021
 Rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Dry burs of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
 Shoot of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Rough Cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 3, 2021
 "Porcupine eggs" of cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 19, 2020
 Blooming rough cocklebur (Xanthium strumarium) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Flowers of rough cocklebur (Xanthium strumarium) on a shore of Somerville Lake near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2020
 Flowers of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 29, 2021
 Grasshopper on rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 19, 2021
 Dry seeds of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021
 Seed capsules of cocklebur (Xanthium strumarium) taken from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020
 Back lit leaves of rough cocklebur (Xanthium strumarium) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 6, 2019
 Close-up of seed capsules of cocklebur (Xanthium strumarium) taken from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 4, 2020
 Fall colors of poison ivy in Lick Creek Park. College Station, Texas, November 10, 2020
 Fall colors of Virginia creeper in Lick Creek Park. College Station, Texas, November 10, 2020
 Fall colors of black locust(?) in Lick Creek Park. College Station, Texas, November 10, 2020
 Fall colors of woolly croton (Croton capitatus) on Post Oak Trail in Lick Creek Park. College Station, Texas, October 23, 2012
 Fall colors of swamp cypress of Research Park on campus of Texas A and M University. College Station, Texas, November 28, 2012
 Fall colors in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors near a bridge in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors near a lamppost in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors at a trail junction in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors around a trail junction in Wolf Pen Creek Park. College Station, Texas, November 22, 2019
 Fall colors of cypress trees in Central Park. College Station, Texas, November 20, 2010
 Fall colors of Alligator Branch of Lake Raven in Huntsville State Park. Texas, November 23, 2012
 Fall colors of wild muskmelon (Cucumis melo, Dudaim melon) on utility cutting in Lake Bryan Park. Bryan, Texas, November 22, 2012
 Fall colors of a maple tree in Bee Creek Park. College Station, Texas, December 3, 2017
 Fall colors of poison oak in Wolf Pen Creek Park. College Station, Texas, December 13, 2020
 Fall colors of Chinese tallow in Bee Creek Park. College Station, Texas, December 8, 2023
 Fall colors of Chinese tallow (Sapium sebiferum) near a pond of Research Park on campus of Texas A and M University. College Station, Texas, November 14, 2010
 Fall colors of Chinese tallow (Sapium sebiferum) on a lake shore in Lake Bryan Park. Bryan, Texas, November 22, 2012
 Reeds (giant cane, Arundo donax) with fall colors of maple in Bee Creek Park. College Station, Texas, December 3, 2017
 Fall colors of a swamp cypress in D. A. Andy Anderson Brazos Valley Arboretum in Bee Creek Park. College Station, Texas, December 3, 2017
 Fall colors of oaks near Birch Creek Unit of Somerville Lake State Park. Texas, November 24, 2018
 Fall colors of Chinese tallow (Sapium sebiferum) in D. A. Andy Anderson Brazos Valley Arboretum in Bee Creek Park. College Station, Texas, December 3, 2017
 Fall colors of Boot Canyon. Big Bend National Park, November 27, 2009
 Fall colors at Lake Raven in Huntsville State Park. Texas, November 15, 2019
 Fall colors of Sam Houston National Forest, on Little Lake Creek Loop Trail. Texas, November 1, 2008
 Fall colors of Chisos Mountains from Pinnacles Trail. Big Bend National Park, November 26, 2009
 Fall colors of farkleberry in Lake Bryan Park. Bryan, Texas, January 7, 2012
 Dry seeds in Lick Creek Park. College Station, Texas, November 30, 2012
 Fall colors of Chinese tallow in Research Park on campus of Texas A and M University. College Station, Texas, December 13, 2020
 Fall colors of bald cypress in Research Park on campus of Texas A and M University. College Station, Texas, December 2, 2021
 Bark of water oak in Lick Creek Park. College Station, Texas, November 30, 2012
 Iron bridge in Lick Creek Park. College Station, Texas, November 1, 2012
 Corky bark in Lick Creek Park. College Station, Texas, November 30, 2012
 Gnarl of water oak in Lick Creek Park. College Station, Texas, November 30, 2012
 Sewage line right of way in Lick Creek Park. College Station, Texas, November 1, 2012
 Fall colors of Enfield gorge, view from Rim Trail, in Robert H. Treman State Park. Ithaca, New York, November 2, 2005
 Fall colors of pison ivy on Kiwanis Nature Trail. College Station, Texas, December 1, 2017
 Fall colors of a cypress tree in Beach Area in Pedernales Falls State Park. Johnson City, Texas, November 2, 2008
 Fall colors at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 6, 2020
 Fall colors of Chinese tallow (Sapium sebiferum) in Research Park on campus of Texas A and M University. College Station, Texas, December 2, 2021
 Texture of water oak trunk in Lick Creek Park. College Station, Texas, November 30, 2012
 Upper layer of fog on a road in Lick Creek Park. College Station, Texas, November 1, 2012
 Iron Bridge Trail in Lick Creek Park. College Station, Texas, November 1, 2012
 Fall colors of Enfield gorge, zoomed, view from Rim Trail, in Robert H. Treman State Park. Ithaca, New York, November 2, 2005
 Fall colors of Chinese tallow (Sapium sebiferum) from a bridge in Research Park on campus of Texas A and M University. College Station, Texas, December 2, 2021
 Colors of brown corticioid polypore fungus Perenniporia tenuis(?) on a log in Bee Creek Park. College Station, Texas, November 1, 2017
 Beautyberry (Callicarpa americana) with freeze in Lick Creek Park. College Station, Texas, November 15, 2012
 Frozen beautyberry and woolly croton in Lick Creek Park. College Station, Texas, November 15, 2012
 Dead tree on Racoon Run Trail in Lick Creek Park. College Station, Texas, November 1, 2012
 Pink leaf of Virginia creeper in Lick Creek Park. College Station, Texas, November 6, 2012
 Tree bark on Racoon Run Trail in Lick Creek Park. College Station, Texas, November 1, 2012
 Fall colors of beautyberry on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, November 20, 2021
 Fall colors of area near the creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 8, 2019
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