 Yellow thistle (Bull thistle, Cirsium horridulum) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Violet ruella (Ruellia caroliniensis) flower on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Floral receptacles of lire-leaf sage on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Self-Heal (Carpenter-weed, Prunella vulgaris) on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Back lit violet ruella (Ruellia caroliniensis) flowers on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Two flowers of black-eyed susan (Rudbeckia hirta) on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Flower of black-eyed susan (Rudbeckia hirta) on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Yellow flowers of black-eyed susan (Rudbeckia hirta) on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Violet ruella (Ruellia caroliniensis) flower with water drops on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Yellow flower of black-eyed susan (Rudbeckia hirta) on a trail in Sam Houston National Forest, near Road 149, near Richards. Texas, May 15, 2010
 Blue waterleaf (Hydrolea ovata) near Forest Service Road 203 in Sam Houston National Forest near Richards. Texas, July 10, 2022
 Blooming blue waterleaf (Hydrolea ovata) near Forest Service Road 203 in Sam Houston National Forest near Richards. Texas, July 10, 2022
 Flowers of blue waterleaf (Hydrolea ovata) near Forest Service Road 203 in Sam Houston National Forest near Richards. Texas, July 10, 2022
 Thistle (Cirsium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Old silver-blue milkcap mushroom (Lactarius paradoxus) with a mold fungus Hypomyces on Forest Service Road 231 near Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, November 19, 2023
 Blooming bull thistle (Cirsium horridulum) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Top view of Bull thistle (Cirsium horridulum) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Yellow thistle (Bull thistle, Cirsium horridulum) on Lone Star Trail in Sam Houston National Forest, near Huntsville. Texas, April 8, 2018
 Road FS203A at crossing with Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Blue dayflower (Commelina) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Blue dayflower (Commelina) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
 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
 Blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Blue waterleaf (Hydrolea ovata) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Blue spiderwort (Tradescantia) flowers on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Dayflower (Commelina) with blue flowers on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Azure blue sage (Salvia azurea) in a pine forest on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Close-up of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blue flower of Commelina on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Blue dayflower (Commelina) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Blue flower of Commelina on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Common blue violet (Viola sororia) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Blue flower of dayflower (Commelina) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Blue flower of Spiderwort (Tradescantia) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014
 Flowers of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Blooming blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flowers of blue waterleaf (Hydrolea ovata) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Flowers of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Flowers of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Close up of azure blue sage (Salvia azurea) in a pine forest on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Blue spiderwort (tradescantia) flowers on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
 Silver-blue milkcap mushroom (Lactarius paradoxus) on Richards Loop Trail in Sam Houston National Forest. Texas, November 17, 2021
 Flower of common blue violet (Viola sororia) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Thorny leaves of a thistle on Forest Service Road 231 near North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 5, 2022
 Thorny rosette of leaves of a thistle on Forest Service Road 231 near North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 5, 2022
 Spores (in toluidine blue) of tiny Mycena mushrooms from a slope of an ash pit, collected on Richards Loop Trail in Sam Houston National Forest. Texas, May 6, 2023
 Underside of silver-blue milkcap mushroom (Lactarius paradoxus) on Richards Loop Trail in Sam Houston National Forest. Texas, November 17, 2021
 Flowers of Blue eyed grass (Sisyrinchium) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
 Blue flower of southern prairie aster (Eurybia hemispherica) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Cross section of silver-blue milkcap mushroom (Lactarius paradoxus) on Richards Loop Trail in Sam Houston National Forest. Texas, November 17, 2021
 Flowers of Blue eyed grass (Sisyrinchium), backlit, on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
 Flower of azure blue sage (Salvia azurea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Opening flower of blue waterleaf (Hydrolea ovata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Spores of mushrooms Antracobia tristis(?) under a microscope in lactofenol blue, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023
 Underside of silver-blue milky mushrooms (Lactarius paradoxus) on North Wilderness Loop Trail in Sam Houston National Forest near Richards. Texas, October 8, 2020
 Common blue violet (Viola sororia) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019
 Caps of silver-blue milky mushrooms (Lactarius paradoxus) on North Wilderness Loop Trail in Sam Houston National Forest near Richards. Texas, October 8, 2020
 Blue flowers of mistflower (Eupatorium coelestinum, Wild ageratum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 Head of grasshopper in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Blue cross section of a bolete mushroom Suillellus subluridus or may be Neoboletus on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Spores of small brown Hebeloma(?) mushrooms from burned ground (in Toluidine blue) collected on Richards Loop Trail in Sam Houston National Forest. Texas, April 8, 2023
 Spores of large white milkcap mushrooms Lactarius deceptivus(?) (in Toluidine blue dye) collected on Richards Loop Trail in Sam Houston National Forest. Texas, April 8, 2023
 Flower of Palafoxia rosea in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Brown anole lizard in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
 Orange milkweed (Asclepias tuberosa) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 8, 2010
 Sidebeak pencilflower (Stylosanthes biflora) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 8, 2010
 Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, December 9, 2021
 Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Road FS 203 with oak and pine forest near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Road FS 203 and pine forest near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, February 6, 2022
 Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, August 11, 2022
 Texture of green-blue Tomentella(?) fungus on bark of a fallen oak on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 25, 2020
 Close-up of green-blue Tomentella(?) fungus on bark of a fallen oak on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 25, 2020
 Pines at Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, December 9, 2021
 Amanita mushroom on Forest Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Cap of Amanita mushroom on Forest Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Pines near Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Yellow flower of aster family in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Sidebeak pencil flower (Stylosanthes biflora) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 8, 2010
 Bastard pennyroyal (Trichostema dichotomum) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Flowering spurge Euphorbia corollata in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Purple dewdrop (Lobelia puberula) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Pink fuzzybean (Strophostyles umbellata) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Forest Service Road 203A at sunrise on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020
 Gills of Amanita mushroom on Forest Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Underside of Amanita mushroom on Forest Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Forest Service Road 203 on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 23, 2018
 Melanoleuca mushrooms at Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, December 9, 2021
 Melanoleuca mushrooms on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, December 28, 2021
 Flower of blackberry on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Pholiota spumosa mushrooms on an old forest road on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Rock-rose on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Melanoleuca mushroom on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, November 17, 2021
 Epiphytic foliose cyanolichen Leptogium cyanescens (blue jellyskin) on a tree on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Back-lit purple flower of wood sorrel in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
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