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Ambrosia

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Butterfly sleeping on ragweed (Ambrosia) in Lick Creek Park. College Station, Texas, September 29, 2010
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
Ragweed (Ambrosia) in Lick Creek Park. College Station, Texas, October 3, 2008
Ragweed (Ambrosia) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 30, 2008
Blooming giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
Green flowers with pollen of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
Growth of ragweed (Ambrosia) under power lines in Lake Bryan Park. Bryan, Texas, July 26, 2013
Ragweed (Ambrosia artemisiifolia) in Lick Creek Park. College Station, Texas, October 23, 2013
Common ragweed (Ambrosia artemisiifolia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
Wilted giant ragweed (Ambrosia trifida) after application of a herbicide in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 in Sam Houston National Forest. Texas, August 21, 2020
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
Common ragweed (Ambrosia artemisiifolia) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
Giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
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
Common ragweed (Ambrosia artemisiifolia) on Forest Service Road 203 in Sam Houston National Forest. Texas, July 12, 2020
Flower buds of giant ragweed (Ambrosia trifida) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 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

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