 Flower of rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Yellow flower of Rock-rose (frostweed, sunrose, Helianthemum carolinianum) in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
 Blooming rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Blooming Rock-rose (frostweed, sunrose, Helianthemum carolinianum) in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
 Rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Yellow flower of rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Yellow flower of rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Yellow flower of rock-rose (frostweed, sunrose, Helianthemum carolinianum) in Bastrop State Park. Bastrop, Texas, April 25, 2021
 Yellow flower of rock-rose (Helianthemum carolinianum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Blooming rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Rock-rose (Helianthemum carolinianum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Blooming rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Yellow flower of Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) on Post Oak Trail in Lick Creek Park. College Station, Texas, May 15, 2009
 Yellow flower of Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) in Lick Creek Park. College Station, Texas, May 3, 2008
 Rock-rose on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Macartney rose (Rosa bracteata) with flower beetles on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Yellow flower of St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Yellow leaf of passion flower (Passiflora lutea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020
 Rose vervain (Glandularia canadensis) in dew on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Flower of blackberry on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Flowers of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 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
 Flowers of yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 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
 Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) in Lick Creek Park. College Station, Texas, May 19, 2010
 Yellow Coreopsis flower on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Yellow flower of aster family on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Pink flower of downy phlox (Phlox pilosa) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Flower of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 16, 2019
 Fluffy seeds of frostweed(?) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Macartney rose (Rosa bracteata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Yellow star-grass flower in burned forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on a leaf of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Blooming Macartney rose (Rosa bracteata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Yellow flower of aster family in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Basal leaves of gayfeather (Liatris) with orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on basal leaves of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Yellow leaves of hickory on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020
 Underside of basal leaves of gayfeather (Liatris) with orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Close-up of orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on basal leaves of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Tiny yellow flowers of Hypericum(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Cap some pale yellow Amanita mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, June 3, 2020
 Yellow web-like corticioid fungus under a pine(?) log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 Blister lichen Trypethelium carolinianum (Bathelium carolinianum) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 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
 Blooming rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Rose vervain (Glandularia canadensis) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Details of yellow web-like corticioid fungus under a pine(?) log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 Climbing yellow and green passion flower (Passiflora lutea) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 7, 2013
 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
 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
 Yellow flower of shrubby water-primrose (Ludwigia octovalvis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 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
 Yellow flower of wood sorrel (shamrock, Oxalis dillenii?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 13, 2012
 Rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Gayfeather (Liatris) flower on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 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
 Yellow and green passion flower (Passiflora lutea), with corona and pistil, on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
 Yellow flowers of sunflower family on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flowers of rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Flower of sensitive brier (Schrankia uncinata)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Pencil flower (Stylosanthes biflora) on Richards Loop Trail in Sam Houston National Forest. Texas, June 27, 2020
 Yellow underside of pineapple bolete mushroom (Boletellus ananas) on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Underside of dark red mature bolete mushrooms with yellow pores on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 Yellow star-grass (Hypoxis hirsuta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 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
 Flower of blackberry on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Yellow flowers of Carolina jessamine (Gelsemium sempervirens) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Yellow wood sorrel (shamrock, Oxalis dillenii?) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Yellow trumpet of Carolina jessamine (Gelsemium sempervirens) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Flower buds of mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Flower buds of mountain mint (Pycnanthemum tenuifolium) 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
 Flower of hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 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
 Yellow powdery bolete mushroom (Buchwaldoboletus hemichrysus) near a burnt pine stump on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 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
 Flower of dewberry at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 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
 Red shoot of oak on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 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
 Flower of dewberry with a stilt bug at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Red leaves and flower buds of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 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
 Flower spike of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Flower spike of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
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