 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Yellow Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 2, 2018
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Mexican hat flower (Ratibida columnifera) in dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2012
 Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 21, 2018
 Cylindrical part of a flower of Mexican hat (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Long, cone-shaped receptacle of Mexican hat flower (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Yellow color variant of Mexican hat flower (Ratibida columnifera) on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 Mexican hat (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
 Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
 Two Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
 Blooming Mexican hat (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
 Field of Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
 Mexican hat flowers (Ratibida columnifera) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
 Leaves of Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 20, 2022
 Dark colored Mexican hat flowers (Ratibida columnifera) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 20, 2018
 Mexican hat flower (Ratibida columnaris) with a caterpillar in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Flower head of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 27, 2021
 Blooming Mexican hat flower (Ratibida columnaris) in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2020
 Mexican hat flowers (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 16, 2010
 Mexican hat flowers (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Mexican hat flowers (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2010
 Cylindrical flowerhead of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Basal leaves of Mexican hat (Ratibida columnaris) in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 11, 2023
 Mexican hat flowers (Ratibida columnaris) on Wildflower Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2020
 Mexican hat (Ratibida columnaris) cylindrical flowerhead with dark red-purple disk flowers and yellow and brown ray flowers on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 Young grasshopper on Mexican hat flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 5, 2010
 Mexican hat flower with a bee on Loop Trail in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 Golden headed weevil (Compsus auricephalus) snout beetle on Mexican hat flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 10, 2008
 Thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 17, 2014
 Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
 Two Mexican hat flowers grown together in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 10, 2008
 Group of Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 18, 2008
 Mexican hat flowers at sunrise in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 9, 2008
 Brown beetle on a thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 12, 2014
 Blue passion flower (Passiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 25, 2014
 White flower of prickly poppy (pricklepoppy, Argemone albiflora) with orange center and delicate crinkled petals in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Field of black eyed susan and Mexican hat flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 15, 2024
 Mexican Hat wildflower near a loop trail in northern part of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 Mexican Hat wildflowers on roadside of loop trail in northern part of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 White prickly poppy flower on field near Old Washington Town Site Loop Trail of Washington-on-the-Brazos State Historic Site. Washington, Texas, June 2, 2007
 Orange bark of Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Orange trunk of Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Orange Indian paintbrush (Castilleja indivisa) with oval bright-reddish pink flower leaf bracts and cut-off funnel-like red-tipped calyx in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 19, 2008
 Orange butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 27, 2012
 Orange butterfly in Washington-on-the-Brazos State Historic Site. Washington, Texas, June 9, 2012
 Orange dry leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 10, 2011
 Orange butterfly near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Orange lantana flowers with dew in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 18, 2010
 Orange lantana flowers in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 15, 2020
 Old osage orange tree near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 24, 2021
 Bark of osage orange near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 1, 2012
 Orange teeth corticioid fungus on an oak log in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 3, 2023
 Bark texture of osage orange in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 24, 2011
 Rotting horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2012
 Orange jelly fungus Dacryopinax spathularia on a log in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 28, 2018
 Horse apple (osage orange) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 3, 2012
 Orange Caloplaca lichen on a sandstone rock in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 21, 2020
 Lactocollybia mushrooms on bark of osage orange in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2022
 Horse apple (osage orange) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Lactocollybia mushrooms at the base of osage orange in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2022
 Horse apple (osage orange) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 16, 2008
 Bark of Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Wet roots of Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Roots of Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Horse apples (osage orange) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 17, 2012
 Details of bark of osage orange near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Twisted bark of osage orange near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 10, 2011
 Half eaten Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 8, 2013
 Horse apple (osage orange) in a frozen pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 10, 2010
 Close-up of Lactocollybia mushrooms at the base of osage orange in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2022
 Slender orange bush lichen (Teloschistes exilis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
 Spores of orange teeth corticioid fungus from an oak log collected a day before in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 4, 2023
 Slime mold Arcyria cinerea on an oasage orange(?) log in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 7, 2021
 Gills of Lactocollybia mushrooms at the base of osage orange in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2022
 Curved trunks of Horse apple (osage orange) in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 16, 2011
 Slender orange bush lichen (Teloschistes exilis) in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 12, 2009
 Horse-apple (Osage orange, Maclura) near a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 2, 2018
 Flat-backed millipede on a dry osage orange tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 5, 2020
 Horse apple (osage orange) with reddish spots in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 21, 2009
 Close up of horse apple (osage orange) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 1, 2012
 Fruit of osage orange on a picnic table near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 23, 2009
 Orange-colored Indian paintbrush (Castilleja indivisa) in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 17, 2022
 Flower of thistle in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009
 Magnolia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 3, 2009
 Paintbrush flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 22, 2008
 Flower of a thustle (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 24, 2020
 Herbertia flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 12, 2018
 Verbena (vervain) flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 31, 2008
 Flower of dewberry in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 9, 2019
 Thistle flower in Washington-on-the-Brazos State Historic Site. Washington, Texas, April 27, 2008
 Thistle flower (Cirsium) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 5, 2022
|