 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) in the creek in Wolf Pen Creek Park. College Station, Texas, August 8, 2022
 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
 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
 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
 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
 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
 Flowers of firewheel (Gaillardia pulchella) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Paraguayan windmillgrass (Chloris canterai)(?) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Morning Glory (Ipomoea cordatotriloba) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Johnson grass (Sorghum halepense) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Seeds of Paraguayan windmillgrass (Chloris canterai)(?) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Seed head of firewheel (Gaillardia pulchella) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 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
 Beginning of a spikelet of sprangletop grass Leptochloa panicea(?) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Sprangletop grass with bluish leaves Leptochloa panicea(?) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 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
 Flower of hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Spikelet of sprangletop grass with bluish leaves Leptochloa panicea(?) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 Flower and fluffy seed heads of firewheel (Gaillardia pulchella) near the creek under power lines in Bee Creek Park. College Station, Texas, July 21, 2020
 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, July 29, 2021
 Flowers of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 Wild petunia (Ruellia) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, June 10, 2022
 Small flower ruellia (Ruellia caroliniensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 20, 2013
 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
 Red lovegrass (Eragrostis secundiflora) under power lines in Bee Creek Park. College Station, Texas, August 12, 2020
 Flower 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
 Close up 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
 Wild petunia (Ruellia caroliniensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 18, 2014
 Pink Ruellia like flowers near a creek in Lemontree Park. College Station, Texas, July 27, 2014
 Flowers of Wild petunia (Ruellia caroliniensis) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, July 18, 2014
 Pink Ruellia like flowers found near a creek in Lemontree Park. College Station, Texas, July 27, 2014
 Hairy Ruellia (Ruellia humilis) in a pine forest on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 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
 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, September 8, 2021
 Hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 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
 Flower of hairy Ruellia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021
 Flower 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
 Wild petunia (Ruellia) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, May 17, 2012
 Flowers of Ruellia in Lemontree Park. College Station, Texas, July 11, 2014
 Ruellia flower in Lemontree Park. College Station, Texas, July 11, 2014
 Wild petunia (Ruellia) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 29, 2018
 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
 Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Ruellia flower in Lick Creek Park. College Station, Texas, April 30, 2012
 Ruellia flowers in Lick Creek Park. College Station, Texas, June 30, 2012
 Mediterranean lineseed (Bellardia trixago) under power lines in Bee Creek Park. College Station, Texas, April 5, 2022
 Pluteus mushrooms on mulched trees under power lines in Bee Creek Park. College Station, Texas, February 24, 2018
 Violet ruella (Ruellia caroliniensis) in Lick Creek Park. College Station, Texas, May 2, 2022
 Violet ruella (Ruellia nudiflora) in Bee Creek Park in College Station, Texas, June 21, 2012
 Blue flower of Ruellia in Lick Creek Park. College Station, Texas, April 19, 2024
 Back lit violet ruella (Ruellia nudiflora) in Bee Creek Park in College Station, Texas, June 21, 2012
 Close up of 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
 Blooming ruella (Ruellia) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 31, 2009
 Ruella (Ruellia) flower in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, July 24, 2008
 Passion flower (Passiflora) under power lines near Park Hudson Trail. College Station, Texas, August 6, 2014
 Passion flower (Passiflora) under power lines on Park Hudson Trail. College Station, Texas, August 12, 2014
 Ruellia flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Ruellia nudiflora on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 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 nudiflora on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Ruellia nudiflora in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 4, 2020
 Showy evening primrose (Oenothera speciosa) under power lines near Park Hudson Trail. College Station, Texas, August 6, 2014
 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 showy evening primrose (Oenothera speciosa) under power lines near Park Hudson Trail. College Station, Texas, August 6, 2014
 White corticioid fungus around a damaged spot on a Mexican plum tree in Lick Creek Park. College Station, Texas, July 5, 2020
 White corticioid fungus covering trunk on a Mexican plum tree in Lick Creek Park. College Station, Texas, July 5, 2020
 White crust fungus around a damaged spot on a Mexican plum tree in Lick Creek Park. College Station, Texas, July 5, 2020
 Ruellia flower at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
 White corticioid (crust) fungus around a damaged spot on a Mexican plum tree in Lick Creek Park. College Station, Texas, July 5, 2020
 Violet ruella (Ruellia caroliniensis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Blooming violet ruella (Ruellia caroliniensis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Flower of violet ruella (Ruellia caroliniensis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Backlit flower of violet ruella (Ruellia caroliniensis) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 14, 2019
 Power lines in fields west from Deviatkino. Saint Petersburg, Russia, July 20, 2012
 Growth of ragweed (Ambrosia) under power lines in Lake Bryan Park. Bryan, Texas, July 26, 2013
 Yellow foliage of poison ivy under power lines in Lake Bryan Park. Bryan, Texas, July 16, 2013
 Passion flower (passiflora) under power lines in Lake Bryan Park. Bryan, Texas, July 16, 2013
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