 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
 Rock-rose (Helianthemum carolinianum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Yellow 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.
 Flower of rock-rose (frostweed, sunrose, 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, 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
 Blooming rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Blooming rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Blooming Rock-rose (frostweed, sunrose, Helianthemum carolinianum) in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
 Yellow flower of rock-rose (frostweed, sunrose, Helianthemum carolinianum) in Bastrop State Park. Bastrop, Texas, April 25, 2021
 Rock-rose on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Rose vervain (Glandularia canadensis) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flower of blackberry on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Blooming rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Yellow berries of horsenettle (Solanum carolinense) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Yellow flowers of sunflower family on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Yellow star-grass (Hypoxis hirsuta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Dry flower bracts of beefsteak plant (Perilla frutescens) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Yellow flowers of Carolina jessamine (Gelsemium sempervirens) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Yellow trumpet 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
 Blooming blackberry on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Shoot of hickory on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Some small grass on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Yellow flower of Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) on Post Oak Trail in Lick Creek Park. College Station, Texas, May 15, 2009
 White flowers of blackberry on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Young leaves of hickory on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Woolly-white (Hymenopappus) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Daisy fleabane (Erigeron) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flower of common blue violet (Viola sororia) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Blooming woolly-white (Hymenopappus) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flowers of woolly-white (Hymenopappus) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Drummond s skullcap (Scutellaria drummondii) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Flowers of woolly-white (Hymenopappus) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Cut-leaved evening primrose (Oenothera laciniata) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Blooming lyreleaf sage (Salvia lyrata) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Malformed leaves of bracken fern (Pteridium aquilinum) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Young leaf of bracken fern (Pteridium aquilinum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 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
 Irregularly grown leaves of bracken fern (Pteridium aquilinum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 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
 Yellow Coreopsis flower on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Yellow flower of Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) in Lick Creek Park. College Station, Texas, May 3, 2008
 Macartney rose (Rosa bracteata) with flower beetles on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
 Downy phlox (Phlox pilosa) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Macartney rose (Rosa bracteata) at Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
 Flowers of downy phlox (Phlox pilosa) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Yellow flower of aster family on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 Flower of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 16, 2019
 Yellow star-grass flower in burned forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Yellow flower of aster family in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 2, 2010
 Yellow flower of St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 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 flowers of narrowleaf silkgrass (Pityopsis graminifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 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 leaf of passion flower (Passiflora lutea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020
 Beautyberry from road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 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
 Pink powderpuff flower (Mimosa strigillosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Cap of a solitary yellow fibrecap (Inocybe) mushroom in muddy area on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 Rose vervain (Glandularia canadensis) 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
 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
 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
 Climbing 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 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) in dew on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Pine trees on road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Blooming pink powderpuff flower (Mimosa strigillosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Pink powderpuff flower (Mimosa strigillosa) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Underside of a solitary yellow fibrecap (Inocybe) mushroom in muddy area on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 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
 Flowers of rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Flowers of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Rose-tinted Amanita mushroom (Amanita roseotincta, A. roseitincta) at road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 25, 2023
 Flower buds of orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Flower of blackberry on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Side view of a solitary yellow fibrecap (Inocybe) mushroom in muddy area on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 Underside of rose-tinted Amanita mushroom (Amanita roseotincta, A. roseitincta) at road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 25, 2023
 Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
 Cap of a brown bolete mushroom Tylopilus appalachiensis(?) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Earthfan mushrooms (Thelephora terrestris) in the middle of Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Common funnel mushrooms (Infundibulicybe gibba) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Drying flower of black eyed susan (Rudbeckia hirta) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Dried flower of black eyed susan (Rudbeckia hirta) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Flower buds of white-flowered milkweed (Asclepias variegata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Blue flower of southern prairie aster (Eurybia hemispherica) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
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