![](../../pictures/archives/compress/2008/672/jpeg/18t.jpg) Tiny yellow flowerhead of lawnflower (Calyptocarpus vialis) on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/13t.jpg) Dodder on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/17t.jpg) Sandburs on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/12t.jpg) Dayflower on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/09t.jpg) White and pink milkweed (asclepias) near Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/16t.jpg) Blooming snake cotton (Froelichia) on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/14t.jpg) Pink powderpuff flower (Mimosa strigillosa) on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/15t.jpg) Flower of large buttonweed (Diodia virginiana) on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2008/672/jpeg/11t.jpg) Broom-wood (Melochia pyramidata(?)) flowers on a roadside of Meyersville Road. North from Chappell Hill, Texas, September 21, 2008
![](../../pictures/archives/compress/2020/2738/jpeg/09t.jpg) Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 in Sam Houston National Forest. Texas, July 12, 2020
![](../../pictures/archives/compress/2020/2756/jpeg/23t.jpg) Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 in Sam Houston National Forest. Texas, August 21, 2020
![](../../pictures/archives/compress/2022/3172/jpeg/24t.jpg) Common ragweed (Ambrosia artemisiifolia) at Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
![](../../pictures/archives/compress/2022/3184/jpeg/19t.jpg) Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
![](../../pictures/archives/compress/2022/3194/jpeg/08t.jpg) Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 2022
![](../../pictures/archives/compress/2024/3506/jpeg/04t.jpg) Common ragweed (Ambrosia artemisiifolia) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 1, 2024
![](../../pictures/archives/compress/2019/2529/jpeg/19t.jpg) Common ragweed (Ambrosia artemisiifolia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
![](../../pictures/archives/compress/2019/2554/jpeg/15t.jpg) Common ragweed (Ambrosia artemisiifolia) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
![](../../pictures/archives/compress/2018/2325/jpeg/12t.jpg) 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
![](../../pictures/archives/compress/2022/3252/jpeg/29t.jpg) Ragweed (Ambrosia artemisiifolia) in Lick Creek Park. College Station, Texas, September 29, 2022
![](../../pictures/archives/compress/2021/3012/jpeg/13t.jpg) 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
![](../../pictures/archives/compress/2010/849/jpeg/07t.jpg) Death camas (Zigadenus nuttallii) in bloom along South Meyersville Road near FM 1155 S., north from Chappell Hill, Texas. April 7, 2010.
![](../../pictures/archives/compress/2021/2995/jpeg/21t.jpg) 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
![](../../pictures/archives/compress/2021/2998/jpeg/09t.jpg) 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
![](../../pictures/archives/compress/2021/2998/jpeg/03t.jpg) 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
![](../../pictures/archives/compress/2021/2998/jpeg/18t.jpg) 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
![](../../pictures/archives/compress/2021/2998/jpeg/10t.jpg) 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
![](../../pictures/archives/compress/2010/849/jpeg/08t.jpg) Flower of Death camas (Poison onion, Zigadenus nuttallii) along South Meyersville Road near FM 1155 S., north from Chappell Hill, Texas. April 7, 2010.
![](../../pictures/archives/compress/2010/849/jpeg/09t.jpg) Close up of flower of Death camas (Poison onion, Zigadenus nuttallii) along South Meyersville Road near FM 1155 S., north from Chappell Hill, Texas. April 7, 2010.
![](../../pictures/archives/compress/2010/849/jpeg/11t.jpg) Flower of Death camas (Nuttall s deathcamas, Zigadenus nuttallii) in bloom along South Meyersville Road near FM 1155 S., north from Chappell Hill, Texas. April 7, 2010.
![](../../pictures/archives/compress/2010/849/jpeg/10t.jpg) Blooming Death camas (Nuttall s deathcamas, Zigadenus nuttallii) on pasture near South Meyersville Road near FM 1155 S., north from Chappell Hill, Texas. April 7, 2010.
![](../../pictures/archives/compress/2013/1290/jpeg/20t.jpg) Ragweed (Ambrosia artemisiifolia) in Lick Creek Park. College Station, Texas, October 23, 2013
![](../../pictures/archives/compress/2021/2995/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2008/629/jpeg/02t.jpg) Ranch road in mist, view from Old Navasota Road, near Old Chappell Hill Road. North from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2008/629/jpeg/03t.jpg) Farm in mist, view from Old Navasota Road, near Old Chappell Hill Road. North from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2008/629/jpeg/01t.jpg) Dense field of bluebonnet flowers, view from Old Navasota Road, near Old Chappell Hill Road. North from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2008/675/jpeg/18t.jpg) Ragweed (Ambrosia) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 30, 2008
![](../../pictures/archives/compress/2008/629/jpeg/05t.jpg) Masonic Cemetery on Old Chappell Hill Road, near Road 1155. East from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2008/676/jpeg/13t.jpg) Ragweed (Ambrosia) in Lick Creek Park. College Station, Texas, October 3, 2008
![](../../pictures/archives/compress/2008/629/jpeg/04t.jpg) Fence of Triple T Ranch and bluebonnet flowers, view from Old Chappell Hill Road, near Pulawski School Lane. East from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2008/628/jpeg/25t.jpg) Farm with bluebonnet flowers, view from crossing of Old Navasota and Old Chappell Hill roads. North from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2010/893/jpeg/06t.jpg) Butterfly sleeping on ragweed (Ambrosia) in Lick Creek Park. College Station, Texas, September 29, 2010
![](../../pictures/archives/compress/2021/3030/jpeg/03t.jpg) Blooming giant ragweed (Ambrosia trifida) in Bee Creek Park. College Station, Texas, September 28, 2021
![](../../pictures/archives/compress/2008/628/jpeg/26t.jpg) Shed and a horse with bluebonnet flowers, view from crossing of Old Navasota and Old Chappell Hill roads. North from Brenham, Texas, April 6, 2008
![](../../pictures/archives/compress/2021/3027/jpeg/17t.jpg) Blooming giant ragweed (Ambrosia trifida) in Lick Creek Park. College Station, Texas, September 22, 2021
![](../../pictures/archives/compress/2008/642/jpeg/01t.jpg) Indian paintbrush flower on roadside of Meyersville Road, between roads 105 and 1155, north-east from Brenham. Texas, May 10, 2008
![](../../pictures/archives/compress/2012/1050/jpeg/12t.jpg) Tomb of Mary E. Chappell in Masonic Cemetery. Chappell Hill, Texas, May 6, 2012
![](../../pictures/archives/compress/2023/3412/jpeg/34t.jpg) Dry leaves of giant ragweed (Ambrosia trifida) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
![](../../pictures/archives/compress/2023/3412/jpeg/22t.jpg) Dry plant of giant ragweed (Ambrosia trifida) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 5, 2023
![](../../pictures/archives/compress/2008/641/jpeg/25t.jpg) Prairie larkspur (delphinium) flower on roadside of Meyersville Road, between roads 105 and 1155, north-east from Brenham. Texas, May 10, 2008
![](../../pictures/archives/compress/2019/2565/jpeg/02t.jpg) Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
![](../../pictures/archives/compress/2022/3252/jpeg/10t.jpg) Purple bindweed and ragweed (Ambrosia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 28, 2022
![](../../pictures/archives/compress/2008/641/jpeg/26t.jpg) Purple coneflower (Echinacea purpurea) with drooping petals on roadside of Meyersville Road, between roads 105 and 1155, north-east from Brenham. Texas, May 10, 2008
![](../../pictures/archives/compress/2023/3414/jpeg/14t.jpg) Dry plant of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 9, 2023
![](../../pictures/archives/compress/2012/1101/jpeg/25t.jpg) Blooming giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
![](../../pictures/archives/compress/2020/2766/jpeg/03t.jpg) Flower buds of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
![](../../pictures/archives/compress/2012/1101/jpeg/26t.jpg) Green flowers with pollen of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
![](../../pictures/archives/compress/2012/1050/jpeg/13t.jpg) Field gate near Road FM 2447. Chappell Hill, Texas, May 6, 2012
![](../../pictures/archives/compress/2012/1050/jpeg/10t.jpg) Flowers over a rusty fence near Old Chappell Hill Road. Texas, May 6, 2012
![](../../pictures/archives/compress/2008/641/jpeg/24t.jpg) Prairie Brazosmint (Brazoria scutellarioides, Warnockia scutellarioides) flower on roadside of Meyersville Road, between roads 105 and 1155, north-east from Brenham. Texas, May 10, 2008
![](../../pictures/archives/compress/2023/3389/jpeg/32t.jpg) Giant ragweed (Ambrosia trifida) on Kiwanis Nature Trail. College Station, Texas, April 20, 2023
![](../../pictures/archives/compress/2008/630/jpeg/03t.jpg) Railroad bridge of Old Gay Hill Road, north from Pledger Road. North from Brenham, Texas, April 7, 2008
![](../../pictures/archives/compress/2019/2568/jpeg/05t.jpg) Some small yellow flower of aster family on Moore s Hill Outcrop at FM Road 3090 2 miles north-east from Navasota. Texas, September 22, 2019
![](../../pictures/archives/compress/2008/641/jpeg/05t.jpg) Yellow garden spider (Argiope aurantia, writing spider) on a web decorated with dense zigzags of silk (stabilimentum) in TAMU Holistic Garden in Texas A and M University. College Station, Texas, May 9, 2008
![](../../pictures/archives/compress/2018/2239/jpeg/14t.jpg) Bluebonnets and paintbrush north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2023/3371/jpeg/07t.jpg) Giant ragweed (Ambrosia trifida) on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 26, 2023
![](../../pictures/archives/compress/2019/2568/jpeg/16t.jpg) Yellow flowers of stiff-leaved goldenrod (Solidago rigida) on Moore s Hill Outcrop at FM Road 3090 2 miles north-east from Navasota. Texas, September 22, 2019
![](../../pictures/archives/compress/2018/2239/jpeg/02t.jpg) Bluebonnets near Lake Drive north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/04t.jpg) Bluebonnet (Lupinus) flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/07t.jpg) Blooming bluebonnets (Lupinus) north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/08t.jpg) Bluebonnets (Lupinus) in bloom north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/01t.jpg) Field of bluebonnet flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/09t.jpg) Plants of bluebonnet (Lupinus) north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2008/622/jpeg/01t.jpg) Field of bluebonnet and paintbrush near Road 50 north from Prairie Hill Road, south from Independence. Texas, March 22, 2008
![](../../pictures/archives/compress/2020/2827/jpeg/07t.jpg) 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
![](../../pictures/archives/compress/2018/2239/jpeg/16t.jpg) Clarann Lane with bluebonnets (Lupinus) north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/13t.jpg) Masses of bluebonnet (Lupinus) flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/12t.jpg) Blue flowers of bluebonnet (Lupinus) north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/11t.jpg) Dense bluebonnet (Lupinus) flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/10t.jpg) Stand of bluebonnet (Lupinus) flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/06t.jpg) A farm with bluebonnet (Lupinus) flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/15t.jpg) A farm house with bluebonnets (Lupinus) north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2013/1232/jpeg/23t.jpg) Growth of ragweed (Ambrosia) under power lines in Lake Bryan Park. Bryan, Texas, July 26, 2013
![](../../pictures/archives/compress/2022/3133/jpeg/01t.jpg) Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
![](../../pictures/archives/compress/2018/2239/jpeg/05t.jpg) Large field of bluebonnet (Lupinus) flowers north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2018/2239/jpeg/03t.jpg) Bluebonnet flowers at 9190 Lake Drive north from Chappell Hill. Texas, March 25, 2018
![](../../pictures/archives/compress/2021/3013/jpeg/14t.jpg) Shoot of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
![](../../pictures/archives/compress/2021/2909/jpeg/09t.jpg) Shoot of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
![](../../pictures/archives/compress/2022/3109/jpeg/02t.jpg) Seedling of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
![](../../pictures/archives/compress/2015/1685/jpeg/04t.jpg) Greenish white stem of common tumbleweed (Amaranthus albus) in a depression on roadside of a road to Zubara, area of Al Magdah farms. Northern Qatar, November 7, 2015
![](../../pictures/archives/compress/2020/2668/jpeg/21t.jpg) Wilted giant ragweed (Ambrosia trifida) after application of a herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
![](../../pictures/archives/compress/2022/3179/jpeg/12t.jpg) Wilted giant ragweed (Ambrosia trifida) under 2,4-D Ester(?) herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
![](../../pictures/archives/compress/2023/3373/jpeg/08t.jpg) 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
![](../../pictures/archives/compress/2023/3373/jpeg/09t.jpg) 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
![](../../pictures/archives/compress/2020/2668/jpeg/22t.jpg) 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
![](../../pictures/archives/compress/2008/671/jpeg/19t.jpg) Large flower of Unicorn plant (devil s claw, Proboscidea loisianica) on roadside of Road 364, north from Little River, with purplish dots and yellow stripes in the throat. Gause, Texas, September 20, 2008
![](../../pictures/archives/compress/2010/890/jpeg/22t.jpg) Yellow flower of Stickleaf (Chickenthief, Mentzelia oligosperma) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, September 18, 2010
![](../../pictures/archives/compress/2008/620/jpeg/02t.jpg) Hutchings - Sealy Building (c. 1895) at a corner of Strand Avenue. Galveston, Texas, March 2, 2008
![](../../pictures/archives/compress/2024/3511/jpeg/09t.jpg) 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
![](../../pictures/archives/compress/2008/670/jpeg/02t.jpg) Blooming ball moss (Tillandsia recurvata) on a twig picked under an oak on campus of Texas A and M University after a tropical storm "Ike", with wiry spider-like green stems and terminal tubular yellow-green flowers. College Station, Texas, September 13, 2008
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