 Mexican petunia (Ruellia simplex, Ruellia brittoniana) near a creek in Bee Creek Park. College Station, Texas, August 22, 2019
 Flowers of Mexican petunia (Ruellia simplex, Ruellia brittoniana) near a creek in Bee Creek Park. College Station, Texas, August 22, 2019
 Mexican petunia (Ruellia simplex, Ruellia brittoniana) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Mexican petunia (Ruellia simplex, Ruellia brittoniana) in a park at Al Intisar Street near a corner with Onaiza. Doha, Qatar, May 3, 2015
 Flower of Mexican petunia (Ruellia simplex, Ruellia brittoniana) in a park at Al Intisar Street near a corner with Onaiza. Doha, Qatar, May 3, 2015
 Mexican petunia (Ruellia simplex, Ruellia brittoniana) in a park at Al Intisar Street near a corner with Onaiza. Doha, Qatar, December 1, 2015
 Back lit flower of Mexican petunia (Ruellia simplex, Ruellia brittoniana) in a park at Al Intisar Street near a corner with Onaiza. Doha, Qatar, May 3, 2015
 Dwarf ruella (Mexican petunia, Ruellia brittoniana) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 9, 2008
 Pink wild petunia flowers (Ruellia) near a creek in Bee Creek Park. College Station, Texas, August 28, 2019
 Pink flower of wild petunia flowers (Ruellia) near a creek in Bee Creek Park. College Station, Texas, August 28, 2019
 Pink flowers of wild petunia flowers (Ruellia) in Bee Creek Park. College Station, Texas, August 28, 2019
 Wild petunia (Ruellia caroliniensis(?)) in Lick Creek Park. College Station, Texas, May 9, 2011
 Wild petunia (Ruellia caroliniensis) in Lick Creek Park. College Station, Texas, May 2, 2023
 Wild petunia (Ruellia) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, June 10, 2022
 Wild petunia (Ruellia) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, May 12, 2022
 Wild petunia (Ruellia) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 23, 2022
 Wild petunia (Ruellia) in dry conditions at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 9, 2020
 Hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 Flower of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Flowers of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 Flowers of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Close-up of a flower of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Hairy Ruellia (Ruellia humilis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Hairy Ruellia (Ruellia humilis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019
 Violet ruella (Ruellia caroliniensis) in Lick Creek Park. College Station, Texas, May 2, 2022
 Close up of hairy Ruellia (Ruellia humilis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Blooming hairy Ruellia (Ruellia humilis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Flower of hairy Ruellia (Ruellia humilis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Close up of a flower of hairy Ruellia (Ruellia humilis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Hairy Ruellia (Ruellia humilis) in a pine forest on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
 Flowers of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Flower of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
 Small flower ruellia (Ruellia caroliniensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 20, 2013
 Wild petunia (Ruellia) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, May 17, 2012
 Wild petunia (Ruellia) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 29, 2018
 Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Wild petunia (Ruellia caroliniensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 18, 2014
 Ruellia flowers in Lick Creek Park. College Station, Texas, June 30, 2012
 Ruellia flower in Lick Creek Park. College Station, Texas, April 30, 2012
 Flower of hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Flowers of Wild petunia (Ruellia caroliniensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 18, 2014
 Flowers of hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Blooming hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Blue flower of Ruellia in Lick Creek Park. College Station, Texas, April 19, 2024
 Pink Ruellia like flowers near a creek in Lemontree Park. College Station, Texas, July 27, 2014
 Violet ruella (Ruellia nudiflora) in Bee Creek Park in College Station, Texas, June 21, 2012
 Pink Ruellia like flowers found near a creek in Lemontree Park. College Station, Texas, July 27, 2014
 Close up of violet ruella (Ruellia nudiflora) in Bee Creek Park in College Station, Texas, June 21, 2012
 Back lit violet ruella (Ruellia nudiflora) in Bee Creek Park in College Station, Texas, June 21, 2012
 Violet ruella (Ruellia caroliniensis) flower in Lick Creek Park. College Station, Texas, June 8, 2008
 Wild petunia (Ruellia caroliniensis(?)) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
 Ruellia flower in Lemontree Park. College Station, Texas, July 11, 2014
 Flowers of Ruellia in Lemontree Park. College Station, Texas, July 11, 2014
 Pink species of Ruellia(?) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, August 1, 2014
 Ruellia flower on Park Hudson Trail. College Station, Texas, July 7, 2014
 Close up of Ruellia flowers in Lemontree Park. College Station, Texas, July 11, 2014
 Dried oak leaves on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Curled leaves of hackberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Dried leaves of hackberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Curled dried leaves of mulberry and oak on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Brown dried leaves of hackberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Curled dried leaves of mulberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Curled wrinkled leaves of mulberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Curled dried leaves of hackberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Curled wrinkled leaves of mulberry and oak on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Texture of curled wrinkled leaves of mulberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Pattern of curled wrinkled leaves of mulberry on the ground in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Ruella (Ruellia) in Antique Rose Emporium. Independence, Texas, August 27, 2021
 Ruella (Ruellia) in Antique Rose Emporium. Independence, Texas, August 15, 2009
 Yellow leaves of Nandina domestica and dried oak leaves in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 Ruellia flower on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, August 1, 2013
 Ruellia flower, near a parking lot of Sundew Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014
 Ruella (Ruellia) flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 24, 2008
 Blooming ruella (Ruellia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 31, 2009
 Violet ruella (Ruellia) flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, June 12, 2008
 Ruellia nudiflora on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Ruellia flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Green immature cones of bald cypress near the creek in Wolf Pen Creek Park. College Station, Texas, June 28, 2022
 Flower of Ruellia nudiflora on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Violet ruella (Ruellia nudiflora) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Violet ruella (Ruellia nudiflora) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Blooming Ruellia on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 23, 2020
 Flower of Ruellia and resurrection fern on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 23, 2020
 Flower of violet ruella (Ruellia nudiflora) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Shoot of green ash in Wolf Pen Creek Park. College Station, Texas, April 8, 2022
 Violet ruella (Ruellia nudiflora) in Washington-on-the-Brazos State Historic Site. Washington, Texas, August 8, 2021
 Ruellia flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 Back lit leaves of green ash in Wolf Pen Creek Park. College Station, Texas, April 8, 2022
 Blooming Yaupon holly in Wolf Pen Creek Park. College Station, Texas, April 8, 2022
 Some soft grass spike in Wolf Pen Creek Park. College Station, Texas, September 27, 2022
 Young leaves of green ash in Wolf Pen Creek Park. College Station, Texas, April 8, 2022
 Violet ruella (Ruellia caroliniensis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Lamppost in Wolf Pen Creek Park. College Station, Texas, August 25, 2011
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