 Prickleseed buttercup flower (Ranunculus muricatus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Stamens and apocarpous gynoecium of prickleseed buttercup flower (Ranunculus muricatus) in Washington-on-the-Brazos State Historic Site, near a pond. Washington, Texas, March 28, 2008
 Prickleseed buttercup flower (Ranunculus muricatus) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Stamens and apocarpous gynoecium of prickleseed buttercup flower (Ranunculus muricatus) in Washington-on-the-Brazos State Historic Site, near a pond. Washington, February 15, 2009
 Buttercup (Ranunculus muricatus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 31, 2009
 Yellow flowers of buttercup (Ranunculus) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Buttercup (Ranunculus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Prickleseed buttercup flowers (Ranunculus muricatus) on a lawn in Wolf Pen Creek Park. College Station, Texas, March 31, 2021
 Buttercup (Ranunculus) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Seeds of prickleseed buttercup flower (Ranunculus muricatus) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, March 31, 2009
 Buttercup flower near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 8, 2009
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Blue spiderwort (Tradescantia) flowers and hairy leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Blue flowers of toad flax (Linaria texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Leaves of buttercup(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 8, 2021
 Back lit flower of buttercup in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Blue and white, snapdragon like flowers of branched broomrape (Orobanche ramosa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 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
 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
 Flowers of blue phacelia (Phacelia patuliflora)(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Flowers of red buckeye (Southern buckeye, Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 Field of Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
 Field of black eyed susan and Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
 White daisies, black eyed susan, and beebalm flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
 Field of black eyed susan flowers (Rudbeckia hirta) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
 Spiderwort flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2008
 Flowers of dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Field of flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Redbud flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Various spring flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Phacelia flowers in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2010.
 Red phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Flowers of dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Various spring flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Field of flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2008
 Phacelia flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 19, 2010.
 Shoots and flowers of hackberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 27, 2019
 Shoot of hackberry with flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2019
 Bluebonnet and phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Flowers of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Bluebonnets and paintbrush flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 White flowers of dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Shoot and flowers of box elder in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Flowers of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 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 6, 2022
 Bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Blue flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Emerging flowers of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Pinkish flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Blue spiderwort (Tradescantia) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Blue flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Bluebonnet flowers in Washington-on-the-Brazos State Historic Site, near Loop Trail. Washington, Texas, March 28, 2008
 Blue flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Bluebonnets and cutleaf groundsel flowers near Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Young leaves and flowers of box elder in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Corn salad (valerianella) flowers in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
 Flower of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 Masses of redbud flowers on a tree branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Planted flowers of mallow family near a museum in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Yellow and blue flowers of Krigia and Tradescantia in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Flowers of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Claster of blue flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Bluebonnet (lupinus) and pink phlox flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Flowers of toad flax (Linaria texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Flowers of woolly-white (Hymenopappus artemisiaefolius) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Red flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 28, 2020
 Rosette of leaves of thistle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 False dandelion (Pyrrhopappus carolinianus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Leaves of woolly-white (Hymenopappus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Toad flax (Linaria texana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Tansy mustard (Descurainia pinnata) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Gills of Psathyrella mushroom and cap of Pluteus in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 Hairy leaves of bluebonnet (Lupinus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Hairy leaves and blue flowers of spiderwort (Tradescantia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2022
 Flowers of Baby blue eyes (Nemophila phacelioides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 17, 2022
 Pink flowers of redbud tree (Cercis canadensis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 White flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Field of bluebonnets and cutleaf groundsel flowers from a fence of Washington-on-the-Brazos State Historic Site. Washington, Texas, March 25, 2018
 Blue flowers of stemless spiderwort (Tradescantia subacaulis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2020
 Skeleton of a dry pad of prickly pears cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Goldenhaired inkcap mushroom (Parasola auricoma) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 Heartleaf nettle (ortiguilla, Urtica chamaedryoides) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Young leaves of red buckeye (Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Sand mounds of leafcutter ants under a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Reddish shoot of red buckeye (Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Flower buds of red buckeye (Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Fresh leaves of red buckeye (Aesculus pavia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Flowers of smartweed (Persicaria, Polygonum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Washington-on-the-Brazos State Historic Site. Washington, Texas, August 29, 2024
 Leaves of white prickly poppy (Argemone albiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Flower buds of squaw-weed (Senecio ampullaceus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Texture of a pad skeleton of prickly pear cactus (Opuntia) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
 Seed head of common dandelion (Taraxanum officinale) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 1, 2024
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