 Young leaves of eastern poison ivy (Toxicodendron radicans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Eastern poison ivy (Toxicodendron radicans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Shoot of eastern poison ivy (Toxicodendron radicans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Shoots of eastern poison ivy (Toxicodendron radicans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Eastern poison ivy (Toxicodendron radicans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Back lit leaf of eastern poison ivy (Toxicodendron radicans) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Tender young leaves of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young leaves of poison ivy on hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Young leaf of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 15, 2009
 Young leaves on a pecan tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Tender pink leaves of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young plants of eastern poison ivy (Toxicodendron radicans) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, March 23, 2019
 Young leaves of elm in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young leaves of cypress elm in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Young tender leaves of elm(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Young leaves of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young leaves of cypress elm in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young leaves of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young leaves of pecan(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Poison ivy near Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Young tender leaves of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young tender leaves on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Young tender leaves of Virginia creeper in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Young leaves of pokeweed (Phytolacca americana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Young leaves of winged elm (Ulmus alata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Flowers and young leaves of redbud tree (Cercis canadensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Young tender leaves of rough-leaf dogwood (Cornus drummondii) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Eastern poison ivy (Toxicodendron radicans) in Wolf Pen Creek Park. College Station, Texas, March 24, 2019
 Young leaf of Virginia creeper in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Young leaves of red buckeye (Southern buckeye, Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Shoot of poison ivy on a hackberry tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Eastern poison ivy (Toxicodendron radicans) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 10, 2019
 Young leaves and catkins on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Young leaves of red buckeye (Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 15, 2009
 Leaves of eastern poison ivy (Toxicodendron radicans) in Wolf Pen Creek Park. College Station, Texas, April 19, 2020
 Young leaves of bluebonnet (Lupinus) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
 Green leaves of eastern poison ivy (Toxicodendron radicans) in Wolf Pen Creek Park. College Station, Texas, April 19, 2020
 Young leaves of bluebonnet (Lupinus) with water drops on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
 Poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 23, 2012
 Shoot of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Blooming poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 1, 2010
 Dying poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 6, 2011
 Back lit leaf of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Berries of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 3, 2008
 Berries of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 1, 2009
 Fall colors of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 23, 2009
 Leaves of Mimosa strigillosa in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Eastern poison ivy (Toxicodendron radicans) in Wolf Pen Creek Park. College Station, Texas, March 19, 2020
 Green berries of poison ivy on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2009
 Early fall color of poison ivy in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 30, 2008
 Basal leaves of plantain (Plantago) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Pepper pot earthstar mushroom (Myriostoma coliforme) among dry leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 23, 2019
 Resette of leaves and small white flowers of a plant in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Discolored yellow leaves of some plant on a lawn in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Deformed leaves and flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Fresh leaves of annual bastard cabbage (Rapistrum rugosum) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Eastern poison ivy (Toxicodendron radicans) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
 Seedling of Eastern poison ivy (Toxicodendron radicans) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
 Bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Shoot of cedar elm in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Red phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Flower of dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Back lit shoot of cedar elm in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Buttercup (Ranunculus) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Pink spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Pink flowers of phlox in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Basal leaves of white avens (Geum canadense) among dry oak leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Green leaves of white avens (Geum canadense) among dry oak leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Field of wildflowers at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Field of bluebonnets at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Wildflowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Field of wildflowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Corn salad (Valerianella) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Pink flower of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Yellow woodsorrel (Oxalis stricta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Sticky mouse-ear (Cerastium glomeratum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Mustang grape (Vitis mustangensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Flower of mallow family near a museum in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Shoot of hackberry (Celtis occidentalis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 False dandelion (Pyrrhopappus carolinianus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Gills of a mushroom Amanita morrisii in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 8, 2019
 Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Field of bluebonnets and paintbrush flowers at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Young leaf of raspberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
 Field of bluebonnets and paintbrush flowers in mist at Old Washington Town Site Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2009
 Smallflower milkvetch (turkeypeas, Astragalus nuttallianus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Planted flowers of mallow family near a museum in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Flowers of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Flower of Venus looking glass (Triodanis perfoliata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Yellow flowers of buttercup (Ranunculus) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Young grasshopper on Mexican hat flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 5, 2010
 Young katydid on paintbrush flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2008
 Young web caterpillars on a Maclura tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Blue field madder (spurwort, Sherardia arvensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
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