 Nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Flowers of nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Tubular flowers of nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flowers of nodding beardtongue (Penstemon laxiflorus) on Lone Star Hiking Trail in Sam Houston National Forest west from Richards. Texas, April 9, 2019
 Nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Small white tubular unopened flowers of nodding beardtongue (Penstemon laxiflorus or australis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
 Blooming nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Nodding beardtongue (Penstemon laxiflorus) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Inflorescence of nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Nodding beardtongue (Penstemon laxiflorus) on Lone Star Hiking Trail in Sam Houston National Forest west from Richards. Texas, April 9, 2019
 Nodding beardtongue (Penstemon laxiflorus) in Bastrop State Park. Bastrop, Texas, May 12, 2012
 Showy beardtongue (prairie penstemon, Penstemon cobaea) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 21, 2018
 Flowers of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Flowers of Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Flowers of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 29, 2022
 Nodding Ladies-Tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 18, 2022
 Beardtongue (Penstemon secundiflorus) flowers north from Capulin Canyon in Bandelier National Monument. New Mexico, near Los Alamos, May 25, 2008
 Close-up of nodding Ladies-Tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 18, 2022
 Flowers of Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 20, 2018
 Flowers of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Large white and pale lavender-pink flowers of showy beardtongue (Penstemon cobaea) on Moore s Hill Outcrop at FM Road 3090 near Navasota. Texas, April 21, 2018
 Back lit flowers of dewberry on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Flowers of woolly-white (Hymenopappus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Flowers of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Beardtongue (Penstemon)(?) flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 28, 2017
 Blue beardtongue (penstemon) flowers in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, June 13, 2014
 Nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Inflorescence of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Close-up of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Inflorescence of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) in a pine forest on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 11, 2018
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Flower spike of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 20, 2018
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 11, 2018
 Flower spike of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Beardtongue (Penstemon secundiflorus) flower north from Capulin Canyon in Bandelier National Monument. New Mexico, near Los Alamos, May 24, 2008
 Close up of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Flowers of coralbean (Erythrina herbacea) on Richards Loop Trail in Sam Houston National Forest. Texas, May 14, 2022
 Nodding Ladies-Tresses Orchids (Spiranthes cernua) on black background on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 20, 2018
 White flowers of nodding Ladies-Tresses Orchid (Spiranthes cernua) in a double spiral on Little Lake Creek Loop Trail in Sam Houston National Forest. Texas, November 1, 2008
 Flowers of beautyberry (Callicarpa americana) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Flowers of orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 14, 2022
 Flowers of purple dewdrop (Lobelia puberula) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
 Nodding ladies-tresses orchid (Spiranthes cernua) 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, October 20, 2024
 Dry flowers of black eyed susan (Rudbeckia hirta) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Three dry flowers of black eyed susan (Rudbeckia hirta) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Shoot of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Half-dry flowers of black eyed susan (Rudbeckia hirta) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Flowers of elegant gayfeather (pinkscale, Liatris hesperelegans, former L. elegans) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
 Flowers of elegant gayfeather (pinkscale, Liatris hesperelegans, former L. elegans) on Richards Loop Trail in Sam Houston National Forest. Texas, October 18, 2022
 Thistle (Cirsium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Shoot of sweetgum on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Young leaves of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming dewberry on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Shoot of beautyberry on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Young leaves of an oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Red flowers of coralbean (Erythrina herbacea) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Flowers of Southern Slender Ladies Tresses (Spiranthes tuberosa var. gracilis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Young leaves of beautyberry on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Young leaves of hickory on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Back lit young leaves of an oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Yellow Coreopsis flower on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Pink phlox flower on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Some small garlic with white flowers (Allium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Flowers of orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Close-up of flowers of Southern Slender Ladies Tresses (Spiranthes tuberosa var. gracilis) on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Woolly-white (Hymenopappus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Reddish shoot of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Paper mulberry (Broussonetia papyrifera)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Red hairy shoot of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Young leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Racemed milkwort (Polygala polygama) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Green milkweed (Asclepias viridis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Reddish leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming poison ivy (Toxicodendron radicans) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Reddish shoots of some common bush on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming woolly-white (Hymenopappus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Opening flowers of green milkweed (Asclepias viridis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Flowers of Drummond wild onion (Allium drummondii) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Beardtongue (Penstemon)(?) in Botanic Gardens of Komarov Botanical Institute. Saint Petersburg, Russia, July 16, 2015
 Top view of Bull thistle (Cirsium horridulum) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Shoot of paper mulberry (Broussonetia papyrifera) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Close-up of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Small plants of poison ivy (Toxicodendron radicans) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Blooming bull thistle (Cirsium horridulum) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 White-flowered milkweed (Asclepias variegata) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Baptisia nuttalliana (Nuttall s wild indigo) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Flowers of purple silkyscale grass (Anthaenantia rufa, Anthenantia rufa) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
 Tiny cup fungus Hyaloscypha britannica on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming woolly-white (Hymenopappus) with a flower beetle on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Pleated leaves of Carolina buckthorn (Frangula caroliniana) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
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