![](../../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/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/24t.jpg) Violet Wood Sorrel (Oxalis violacea) blooming at fall without leaves in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
![](../../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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/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/2011/943/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/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/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/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/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/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/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/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/2011/947/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/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/2017/2044/jpeg/13t.jpg) Flower of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
![](../../pictures/archives/compress/2017/2044/jpeg/16t.jpg) Wood sorrel (Oxalis acetosella, Russian name Kislitsa) in flower in Sosnovka Park. Saint Petersburg, Russia, May 20, 2017
![](../../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/2011/940/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/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/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/2010/893/jpeg/15t.jpg) Flower of Palafoxia rosea in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
![](../../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/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/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/2010/893/jpeg/17t.jpg) Yellow flower of aster family in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
![](../../pictures/archives/compress/2009/714/jpeg/10t.jpg) Veined flower of blue violet on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
![](../../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/2024/3482/jpeg/08t.jpg) Flower of common blue violet (Viola sororia) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
![](../../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/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/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/2015/1599/jpeg/24t.jpg) Flower of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Pavlovsk Park. Pavlovsk, suburb of Saint Petersburg, Russia, May 18, 2015
![](../../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/2018/2371/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/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/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/2009/714/jpeg/11t.jpg) Tiny flower of Small bluets (Star-violet, Hedyotis crassifolia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
![](../../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/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/2019/2473/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/2009/714/jpeg/12t.jpg) Tiny violet flower of Small bluets (Hedyotis crassifolia) growing among pine needles on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
![](../../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/2008/659/jpeg/24t.jpg) Small yellow flower of pea family (Pencil flower, Stylosanthes biflora) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
![](../../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/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/2011/982/jpeg/23t.jpg) Pines on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 24, 2011
![](../../pictures/archives/compress/2011/982/jpeg/26t.jpg) Dry vegetation on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 24, 2011
![](../../pictures/archives/compress/2011/982/jpeg/25t.jpg) Sunrise on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 24, 2011
![](../../pictures/archives/compress/2023/3429/jpeg/04t.jpg) Violet brittlegill (Russula) mushrooms on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, November 19, 2023
![](../../pictures/archives/compress/2018/2417/jpeg/33t.jpg) Big violet webcap (Cortinarius) mushroom on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, December 23, 2018
![](../../pictures/archives/compress/2022/3264/jpeg/29t.jpg) Spores of violet yoothed polypore mushrooms (Trichaptum biforme) collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, October 30, 2022
![](../../pictures/archives/compress/2018/2417/jpeg/34t.jpg) Underside of a big violet webcap (Cortinarius) mushroom on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, December 23, 2018
![](../../pictures/archives/compress/2011/982/jpeg/27t.jpg) Pone trees on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 24, 2011
![](../../pictures/archives/compress/2018/2365/jpeg/10t.jpg) Fuligo cinerea slime mold on wood on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 23, 2018
![](../../pictures/archives/compress/2019/2543/jpeg/25t.jpg) Entoloma mushrooms on rotten pine wood on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019
![](../../pictures/archives/compress/2018/2365/jpeg/19t.jpg) Gills of some Gymnopus mushrooms on rotting wood on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 23, 2018
![](../../pictures/archives/compress/2018/2365/jpeg/20t.jpg) Caps of some Gymnopus mushrooms on rotting wood on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 23, 2018
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