![](../../pictures/archives/compress/2011/984/jpeg/23t.jpg) Back lit Violet Wood Sorrel (Oxalis violacea) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
![](../../pictures/archives/compress/2011/984/jpeg/25t.jpg) Flower of Violet Wood Sorrel (Oxalis violacea) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
![](../../pictures/archives/compress/2011/984/jpeg/26t.jpg) Flowers of Violet Wood Sorrel (Oxalis violacea) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
![](../../pictures/archives/compress/2013/1290/jpeg/09t.jpg) Violet Wood Sorrel (Oxalis violacea) in dew blooming at fall without leaves in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 20, 2013
![](../../pictures/archives/compress/2024/3482/jpeg/11t.jpg) Violet wood sorrel (Oxalis violacea) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
![](../../pictures/archives/compress/2020/2674/jpeg/29t.jpg) Violet wood sorrel (shamrock, Oxalis violacea) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
![](../../pictures/archives/compress/2020/2667/jpeg/26t.jpg) Violet wood sorrel (shamrock, Oxalis violacea) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
![](../../pictures/archives/compress/2024/3615/jpeg/12t.jpg) Violet wood sorrel (Oxalis violacea) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2019/2480/jpeg/15t.jpg) Violet wood sorrel (Oxalis violacea) on Lone Star Hiking Trail in Sam Houston National Forest west from Richards. Texas, April 9, 2019
![](../../pictures/archives/compress/2019/2480/jpeg/18t.jpg) Flower of violet wood sorrel (Oxalis violacea) on Lone Star Hiking Trail in Sam Houston National Forest west from Richards. Texas, April 9, 2019
![](../../pictures/archives/compress/2012/1111/jpeg/07t.jpg) Blooming yellow wood sorrel (shamrock, Oxalis dillenii?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
![](../../pictures/archives/compress/2009/727/jpeg/20t.jpg) Blooming yellow wood sorrel (shamrock, Oxalis dillenii?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
![](../../pictures/archives/compress/2008/678/jpeg/03t.jpg) Violet wood sorrel (shamrock, Oxalis violacea?) in Big Thicket park on Sundew Trail. Texas, October 11, 2008
![](../../pictures/archives/compress/2012/1111/jpeg/08t.jpg) Yellow flower of wood sorrel (shamrock, Oxalis dillenii?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
![](../../pictures/archives/compress/2014/1473/jpeg/01t.jpg) Violet wood sorrel (Oxalis violacea) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014
![](../../pictures/archives/compress/2019/2457/jpeg/08t.jpg) Leaves of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
![](../../pictures/archives/compress/2012/1063/jpeg/11t.jpg) Yellow wood sorrel (shamrock, Oxalis dillenii?) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
![](../../pictures/archives/compress/2019/2457/jpeg/10t.jpg) Carpet of leaves of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
![](../../pictures/archives/compress/2019/2457/jpeg/09t.jpg) Pattern of leaves of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
![](../../pictures/archives/compress/2009/731/jpeg/13t.jpg) Violet wood sorrel (shamrock, Oxalis violacea?) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, April 5, 2009
![](../../pictures/archives/compress/2020/2645/jpeg/22t.jpg) Violet wood sorrel (Oxalis violacea, shamrock) on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, February 15, 2020
![](../../pictures/archives/compress/2008/635/jpeg/22t.jpg) Pink flower of Violet wood sorrel (Oxalis violacea, shamrock) on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 22, 2008
![](../../pictures/archives/compress/2023/3370/jpeg/22t.jpg) Bloomin violet wood sorrel (Oxalis violacea, shamrock) in Little Thicket Nature Sanctuary. Cleveland, Texas, March 25, 2023
![](../../pictures/archives/compress/2023/3370/jpeg/23t.jpg) Flowers of violet wood sorrel (Oxalis violacea, shamrock) in Little Thicket Nature Sanctuary. Cleveland, Texas, March 25, 2023
![](../../pictures/archives/compress/2020/2645/jpeg/21t.jpg) Pink flowers of Violet wood sorrel (Oxalis violacea, shamrock) on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, February 15, 2020
![](../../pictures/archives/compress/2023/3370/jpeg/25t.jpg) Pink flowers of violet wood sorrel (Oxalis violacea, shamrock) in Little Thicket Nature Sanctuary. Cleveland, Texas, March 25, 2023
![](../../pictures/archives/compress/2023/3370/jpeg/24t.jpg) Back lit flowers of violet wood sorrel (Oxalis violacea, shamrock) in Little Thicket Nature Sanctuary. Cleveland, Texas, March 25, 2023
![](../../pictures/archives/compress/2010/892/jpeg/05t.jpg) Violet wood sorrel blooming at fall (without leaves) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, September 25, 2010
![](../../pictures/archives/compress/2009/790/jpeg/08t.jpg) Violet wood sorrel blooming at fall without leaves in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, September 5, 2009
![](../../pictures/archives/compress/2020/2674/jpeg/26t.jpg) Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
![](../../pictures/archives/compress/2020/2667/jpeg/20t.jpg) Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
![](../../pictures/archives/compress/2024/3503/jpeg/26t.jpg) Yellow wood sorrel (shamrock, Oxalis dillenii?) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
![](../../pictures/archives/compress/2020/2667/jpeg/22t.jpg) Flowers of yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
![](../../pictures/archives/compress/2019/2457/jpeg/07t.jpg) Violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
![](../../pictures/archives/compress/2008/672/jpeg/22t.jpg) Violet wood sorrel (shamrock, Oxalis violacea?) near a pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, September 21, 2008
![](../../pictures/archives/compress/2019/2457/jpeg/11t.jpg) Underside of a leaf of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
![](../../pictures/archives/compress/2009/709/jpeg/09t.jpg) Pink wood sorrel (shamrock, Oxalis violacea?) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, February 8, 2009
![](../../pictures/archives/compress/2011/947/jpeg/21t.jpg) Blooming wood sorrel (Oxalis) on Angliyskaya Alley in a park of Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2011
![](../../pictures/archives/compress/2010/847/jpeg/27t.jpg) Back-lit purple flower of wood sorrel in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
![](../../pictures/archives/compress/2011/947/jpeg/22t.jpg) Blooming wood sorrel (Oxalis acetosella, Kislitsa in Russian) in a park of Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2011
![](../../pictures/archives/compress/2008/622/jpeg/12t.jpg) Blooming yellow wood sorrel (shamrock, Oxalis dillenii?) with soldier flies (Stratiomyidae) in Big Thicket park on Sandhill Loop Trail. Texas, March 23, 2008
![](../../pictures/archives/compress/2008/675/jpeg/21t.jpg) Tiny purple flower of Violet wood sorrel (shamrock, Oxalis) on Deer Run Trail in Lick Creek Park. College Station, Texas, September 30, 2008
![](../../pictures/archives/compress/2022/3121/jpeg/25t.jpg) Yellow wood sorrel (Oxalis) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 26, 2022
![](../../pictures/archives/compress/2022/3121/jpeg/26t.jpg) Flowers of yellow wood sorrel (Oxalis) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 26, 2022
![](../../pictures/archives/compress/2022/3123/jpeg/36t.jpg) Pink flowers of wood sorrel (Oxalis) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 2, 2022
![](../../pictures/archives/compress/2011/947/jpeg/26t.jpg) Wood sorrel (Oxalis acetosella, Kislitsa in Russian) carpeting a forest in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2011
![](../../pictures/archives/compress/2019/2473/jpeg/11t.jpg) Leaves of yellow oxalis (Oxalis stricta) with sorrel rust fungus (Puccinia oxalidis) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 26, 2019
![](../../pictures/archives/compress/2016/1823/jpeg/02t.jpg) Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Sosnovka Park. Saint Petersburg, Russia, May 10, 2016
![](../../pictures/archives/compress/2017/2044/jpeg/12t.jpg) Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
![](../../pictures/archives/compress/2019/2466/jpeg/35t.jpg) Blooming common yellow wood sorrel (Oxalis stricta) on Lost Pines Trail in Bastrop State Park. Bastrop, Texas, March 14, 2019
![](../../pictures/archives/compress/2022/3122/jpeg/02t.jpg) Underside of leaves of wood sorrel Oxalis stricta with rust fungus Puccinia oxalidis in Bee Creek Park. College Station, Texas, March 29, 2022
![](../../pictures/archives/compress/2024/3496/jpeg/21t.jpg) Blooming slender trillium (Trillium gracile) and yellow wood sorrel (Oxalis) on Fringe Tree Trail in Little Thicket Nature Sanctuary. Cleveland, Texas, March 23, 2024
![](../../pictures/archives/compress/2009/698/jpeg/26t.jpg) Purple flowers of Violet wood sorrel (shamrock, Oxalis) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, January 9, 2009
![](../../pictures/archives/compress/2015/1603/jpeg/20t.jpg) Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 20, 2015
![](../../pictures/archives/compress/2019/2502/jpeg/04t.jpg) Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Sobstvennaya Dacha Park. Old Peterhof, west from Saint Petersburg, Russia, May 17, 2019
![](../../pictures/archives/compress/2017/2047/jpeg/14t.jpg) Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Upper Park in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2017
![](../../pictures/archives/compress/2011/984/jpeg/22t.jpg) Palafoxia rosea in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
![](../../pictures/archives/compress/2011/943/jpeg/22t.jpg) Wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 19, 2011
![](../../pictures/archives/compress/2021/3046/jpeg/04t.jpg) Cap of a violet webcap mushroom (Cortinarius violaceus) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2011/943/jpeg/24t.jpg) Flower of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Dubki Park. Sestroretsk, a suburb of Saint Petersburg, Russia, May 19, 2011
![](../../pictures/archives/compress/2011/940/jpeg/10t.jpg) White flowers of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park, suburb of Saint Petersburg. Russia, May 15, 2011
![](../../pictures/archives/compress/2021/3046/jpeg/03t.jpg) Gills of a violet webcap mushroom (Cortinarius violaceus) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2021/3046/jpeg/07t.jpg) Underside of a violet webcap mushroom (Cortinarius violaceus) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2011/984/jpeg/21t.jpg) Yellow flowers of sunflower family in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
![](../../pictures/archives/compress/2021/3046/jpeg/06t.jpg) Side view of a violet webcap mushroom (Cortinarius violaceus) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2021/3046/jpeg/05t.jpg) Cross section of violet webcap mushrooms (Cortinarius violaceus) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2011/947/jpeg/23t.jpg) White flowers of wood sorrel (Oxalis acetosella, Kislitsa in Russian) in a park of Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2011
![](../../pictures/archives/compress/2016/1820/jpeg/29t.jpg) Blooming wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Old Sylvia in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 6, 2016
![](../../pictures/archives/compress/2021/3046/jpeg/02t.jpg) Violet webcap mushrooms (Cortinarius violaceus) under pines and oaks in a relatively dry area on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2014/1410/jpeg/17t.jpg) Violet ruella (Ruellia nudiflora) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
![](../../pictures/archives/compress/2012/1062/jpeg/25t.jpg) Violet ruella (Ruellia nudiflora) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
![](../../pictures/archives/compress/2020/2658/jpeg/09t.jpg) Missouri violet (Viola missouriensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
![](../../pictures/archives/compress/2014/1410/jpeg/18t.jpg) Flower of violet ruella (Ruellia nudiflora) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
![](../../pictures/archives/compress/2018/2369/jpeg/16t.jpg) Violet mushrooms Gymnopus iocephalus on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018
![](../../pictures/archives/compress/2019/2460/jpeg/11t.jpg) Flower of blue violet (Viola) in a pine forest at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
![](../../pictures/archives/compress/2021/3046/jpeg/01t.jpg) Wood pinkgill mushrooms (Entoloma rhodopolium) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2015/1627/jpeg/21t.jpg) Leaves of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, July 19, 2015
![](../../pictures/archives/compress/2019/2617/jpeg/09t.jpg) Early spring violet (Viola) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, December 24, 2019
![](../../pictures/archives/compress/2018/2369/jpeg/17t.jpg) Close up of violet mushrooms Gymnopus iocephalus on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018
![](../../pictures/archives/compress/2018/2369/jpeg/18t.jpg) Violet mushrooms Gymnopus iocephalus on white background on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 29, 2018
![](../../pictures/archives/compress/2018/2371/jpeg/26t.jpg) Some violet thin-stem webcap (Cortinarius) mushrooms on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 30, 2018
![](../../pictures/archives/compress/2018/2371/jpeg/27t.jpg) Violet cap of some thin-stem webcap (Cortinarius) mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 30, 2018
![](../../pictures/archives/compress/2020/2833/jpeg/24t.jpg) Tall and slender violet and brown Mycena mushrooms among oak leaves on a sandy terrace above the creek on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 20, 2020
![](../../pictures/archives/compress/2022/3253/jpeg/02t.jpg) Violet berries of beautyberry (Callicarpa americana) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
![](../../pictures/archives/compress/2018/2371/jpeg/28t.jpg) Underside of some violet thin-stem webcap (Cortinarius) mushroom on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 30, 2018
![](../../pictures/archives/compress/2021/3046/jpeg/24t.jpg) Young mushroom Amanita polypyramis under pine and elm leaves on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
![](../../pictures/archives/compress/2011/982/jpeg/21t.jpg) Small lake on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 24, 2011
![](../../pictures/archives/compress/2019/2460/jpeg/08t.jpg) Some blooming tree like a maple at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
![](../../pictures/archives/compress/2009/727/jpeg/14t.jpg) Blooming dewberry (Rubus) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
![](../../pictures/archives/compress/2014/1411/jpeg/09t.jpg) Blooming coneflowers (Echinacea sanguinea) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
![](../../pictures/archives/compress/2014/1411/jpeg/05t.jpg) Blooming coral beans (Erythrina) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
![](../../pictures/archives/compress/2019/2529/jpeg/13t.jpg) Blooming spiderwort (Tradescantia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
![](../../pictures/archives/compress/2019/2473/jpeg/13t.jpg) Sorrel rust fungus (Puccinia oxalidis) on yellow oxalis (Oxalis stricta) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 26, 2019
![](../../pictures/archives/compress/2008/639/jpeg/26t.jpg) Blooming yellow star-grass in burned forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
![](../../pictures/archives/compress/2024/3633/jpeg/17t.jpg) Blooming aster on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
![](../../pictures/archives/compress/2011/982/jpeg/24t.jpg) Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 24, 2011
![](../../pictures/archives/compress/2019/2471/jpeg/08t.jpg) Common yellow oxalis (Oxalis stricta) with sorrel rust fungus (Puccinia oxalidis) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 22, 2019
![](../../pictures/archives/compress/2019/2473/jpeg/12t.jpg) Common yellow oxalis (Oxalis stricta) with sorrel rust fungus (Puccinia oxalidis) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 26, 2019
![](../../pictures/archives/compress/2021/3046/jpeg/25t.jpg) Side view of young mushroom Amanita polypyramis among pine and elm leaves on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, October 23, 2021
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