Pink wood sorrel (shamrock, Oxalis violacea?) in Mercer Arboretum and Botanical Gardens. Humble (Houston area), Texas, February 8, 2009
Pink and white flowers of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2017
Pink flower of Violet wood sorrel (Oxalis violacea, shamrock) on Prairie Trail in Brazos Bend State Park. Needville, Texas, April 22, 2008
Pink flowers of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2017
Pink variety of wood sorrel (Oxalis acetosella, Russian name Kislitsa) in Lomonosov (Oranienbaum). West from Saint Petersburg, Russia, May 23, 2017
Pink flowers of Violet wood sorrel (Oxalis violacea, shamrock) on Hoots Hollow Trail in Brazos Bend State Park. Needville, Texas, February 15, 2020
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
Pink flowers of violet wood sorrel (Oxalis violacea, shamrock) in Little Thicket Nature Sanctuary. Cleveland, Texas, March 25, 2023