 Tiny yellow flowers of Hypericum(?) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
 Yellow flower of St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Yellow flowers of St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 St. Andrew cross (Ascyrum hypericoides, Hypericum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 St. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Blooming st. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Small bee on a flower of St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Tiny white flowers of rustweed (juniper leaf, Polypremum procumbens) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Flowers of yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 St. Andrew cross (Ascyrum hypericoides, Hypericum) on Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 2022
 Flowers of St. Andrew cross (Hypericum, Ascyrum hypericoides) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
 St. Andrew cross (Ascyrum hypericoides, Hypericum) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Small yellow flowers of agrimony (Agrimonia) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Yellow hydnoid crust fungus with tiny teeth on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, February 18, 2023
 Close-up of flowers of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Dayflower (Commelina) with blue flowers on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Croton glandulosus with tiny white flowers on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 Flowers of elephant foot (Elephantopus carolinianus) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Flowers of hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Pinkish flowers of buttonweed (Poor-Joe, Diodia teres) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Tiny white slime mold (Eumycetozoa) on rotting wood on Richards Loop Trail in Sam Houston National Forest. Texas, April 11, 2020
 Tiny flower of buttonweed (Poor-Joe, Diodia teres) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021
 St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Yellow flowers of sunflower family on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Tiny teeth of yellow hydnoid fungus on a thick pine log on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, June 19, 2021
 Blooming St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Yellow leaves of hickory on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020
 Yellow flowers of narrowleaf silkgrass (Pityopsis graminifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Yellow aster family flowers in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008
 Yellow flowers of Carolina jessamine (Gelsemium sempervirens) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Yellow flowers of sunflower family in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 22, 2011
 St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 Yellow web-like corticioid fungus under a pine(?) log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 Cap some pale yellow Amanita mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, June 3, 2020
 Yucca flowers on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Back lit St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
 Details of yellow web-like corticioid fungus under a pine(?) log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Some dark red mature bolete mushrooms with yellow pores on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Dissected view of some pale yellow Amanita mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, June 3, 2020
 Side view of some pale yellow Amanita mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, June 3, 2020
 Flowers of rush (Juncus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 White flowers of blackberry on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Flowers of coralbean (Erythrina herbacea) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Red flowers of coralbean (Erythrina herbacea) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 St. Andrew cross (Hypericum, Ascyrum hypericoides) 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, September 21, 2024
 Underside of dark red mature bolete mushrooms with yellow pores on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Yellow underside of pineapple bolete mushroom (Boletellus ananas) on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Flowers of Yellow star-grass (woolly stargrass, Hypoxis hirsuta) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
 Flowers of woolly-white (Hymenopappus artemisiaefolius) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Red flowers of coralbean (Erythrina herbacea) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Flowers of orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Yellow powdery bolete mushroom (Buchwaldoboletus hemichrysus) near a pine stump on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Cross section of dark red mature bolete mushrooms with yellow pores on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Yellow leaf of passion flower (Passiflora lutea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020
 Yellow flower of rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Flowers of lyreleaf sage (Salvia lyrata) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Flowers of orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Ray flowers of sanguine purple coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Flowers of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 White flowers of Lindheimer s beebalm (Monarda lindheimeri) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Flowers of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, June 27, 2020
 Dusty yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) under a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Cross section and yellow pores of pineapple bolete mushroom (Boletellus ananas) on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Yellow powdery bolete mushroom (Buchwaldoboletus hemichrysus) near a burnt pine stump on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Honey bee on flowers of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, June 27, 2020
 Disc flowers of sanguine purple coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Yellow-dust Amanita mushrooms (Amanita flavoconia) on Richards Loop Trail in Sam Houston National Forest. Texas, April 6, 2020
 Dusty yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 Croton glandulosus on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Little bluestem(?) grass on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Some green shoot on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Dayflower (Commelina) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Flowers of gayfeather (Liatris) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014
 Back lit yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Yellow and green passion flower (Passiflora lutea) with ferns on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Climbing yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Yellow leaves of laurel greenbrier (catbriar, bamboo vine, Smilax laurifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 Close up of yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 Flowers of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Close-up of honey bee on flowers of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, June 27, 2020
 Flowers of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Flowers of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Dissected yellow-dust Amanita mushrooms (Amanita flavoconia) on Richards Loop Trail in Sam Houston National Forest. Texas, April 6, 2020
 Close-up of dusty yellow corticioid fungus Drepanospora viridis (Helicoma viride)(?) on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 Tendrils of greenbrier (Smilax) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Beautyberry (Callicarpa americana) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Gayfeather (Liatris) flower on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Close-up of dayflower (Commelina) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Foxtail like grass (Setaria) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Dandelion like seed head on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Distorted growth of oak leaves on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
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