 Firewheel and bull nettle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Firewheel and bull nettle flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Engelmann daisy and bull nettle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2022
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Bluebonnet (Lupinus) and Indian paintbrush in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Prickly flow buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Yellow and red Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2022
 Close-up of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Blooming Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Yellow Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Red flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Flower head of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Orange-colored Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Fruits bull nettle (Cnidoscolus texanus) collected in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 22, 2022
 Bull nettle (Cnidoscolus texanus) on a sandy road in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2021
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Chlorosis (yellowing of leaves) of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 20, 2022
 Indian paintbrush in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Blooming bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Blooming Bull Nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
 Bull nettle (Cnidoscolus texanus) in bloom in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Flower of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Yellowing of leaf tissue (chlorosis) of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
 Indian paintbrush in morning dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Lemon Indian paintbrush in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Indian paintbrush plants in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Katydid on Indian paintbrush in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Bull nettle (Mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Flower buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2023
 White flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 White flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Crab spider on a white flower of bull nettle in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 4, 2009
 Bull nettle (Cnidoscolus texanus) and pink phlox in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 White flowers of Bull Nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 24, 2012
 White flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Close-up of a flower of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2023
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Yellow and pink Indian paintbrush in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Prickly flower buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 3, 2021
 Flower of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Indian paintbrush flower in Washington-on-the-Brazos State Historic Site, near Loop Trail. Washington, Texas, April 5, 2008
 Flowers of Indian paintbrush in dew with cut-off funnel-like red-tipped calyx in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Bull nettle (Mala mujer, Cnidoscolus texanus) flower with immature katydid in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Yellow and white flower of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 13, 2021
 Flower buds of Bull nettle (mala mujer, Cnidoscolus texanus) armed with stinging hairs in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 30, 2011
 Bull nettle flowers with a caterpillar(?) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 10, 2019
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2024
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 8, 2014
 Fruit of Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2019
 Leaves of Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2020
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
 Bull Nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 15, 2019
 Bull nettle (mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Blooming bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Bull nettle (Mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
 Indian paintbrush in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 26, 2010.
 Indian paintbrush flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 White flower of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 Bull nettle (mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Flower buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Young plant of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Bull nettle (mala mujer, Cnidoscolus texanus) flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 White flower of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Alyssum like flower with bull nettle on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Bull nettle (mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 Young leaves of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2023
 White flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
 White flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Flowers of Bull nettle (mala mujer, Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 13, 2020
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Late blooming Indian paintbrush in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Green lynx spider on bull nettle near Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Green lynx spider on bull nettle (mala mujer) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2008
 Spider on white flowers of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Fruit of Bull nettle (Cnidoscolus texanus) armed with stinging hairs in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Prickly flower buds of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 29, 2023
 Young folded leaf of bull nettle (Cnidoscolus texanus) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Blooming Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 Close up of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Close-up of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
 Flowers of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 14, 2021
 Indian paintbrush (Castilleja indivisa) and bluebonnets in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2009
 Yellow and red Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2021
 Close up of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 17, 2012
 Flower of Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
|