Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023
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
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
Rose vervain (Glandularia canadensis) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
Rose vervain (Glandularia canadensis) on North Wilderness Trail in Sam Houston National Forest near Montgomery. Texas, April 14, 2022
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
Rose vervain (Glandularia canadensis) in dew on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
Flowers of rose vervain (Glandularia canadensis) on North Wilderness Trail in Sam Houston National Forest near Montgomery. Texas, April 14, 2022
Flower of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 16, 2019
Flowers of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
Flowers of rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
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
Rose vervain (Glandularia canadensis) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
Rose vervain (Glandularia canadensis) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
Rose vervain (Glandularia canadensis) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021
Rose vervain (Glandularia canadensis) 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
Flowers of rose vervain (Glandularia canadensis) 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
Blooming rose vervain (Glandularia canadensis) on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 5, 2024
Rose vervain (Glandularia canadensis) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
Pink flowers of rose vervain (Glandularia canadensis) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
Rose vervain (Verbena canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
Close up of a cluster of flowers of rose vervain (Verbena canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, Texas, February 22, 2009
Canada wild rye (Elymus canadensis)(?) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
Spikes of Canada wild rye (Elymus canadensis)(?) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
Artichoke-shaped gall on on the top of a shoot of goldenrod Solidago canadensis on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 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
Slender vervain (Verbena rigida) on road FS203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
Galls on leaves of goldenrod Solidago canadensis caused by gall midges Asteromyia carbonifera with symbiotic fungus Botryosphaeria dothidea on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
Shoots of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
Leaves of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
Leaves of goldenrod Solidago canadensis with raised white cushions caused by gall midges Asteromyia carbonifera and symbiotic fungus Botryosphaeria dothidea inside the galls on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
Macartney rose (Rosa bracteata) at Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022
Macartney rose (Rosa bracteata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
Canada wildrye (Elymus canadensis)(?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
Blooming Macartney rose (Rosa bracteata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
Macartney rose (Rosa bracteata) with flower beetles on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020
Bur-like seed capsules with hooks of Canadian black snakeroot (Sanicula canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
Blooming Rock-rose (frostweed, sunrose, Helianthemum carolinianum) in Sam Houston National Forest on Little Lake Creek Loop Trail. Richards, Texas, April 4, 2010.
Shoot of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
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.
Shoot of sweetgum 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
Thistle (Cirsium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 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 dewberry 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
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
Back lit flowers of dewberry 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
Young leaves of beautyberry 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
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
Woolly-white (Hymenopappus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
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
Paper mulberry (Broussonetia papyrifera)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
Reddish leaf of mustang grape 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
Young leaf of mustang grape 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
Racemed milkwort (Polygala polygama) 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
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
Green milkweed (Asclepias viridis) 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
Nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
Blooming woolly-white (Hymenopappus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
Cross section 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
Small plants of poison ivy (Toxicodendron radicans) 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
Flowers of nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
Shoot of paper mulberry (Broussonetia papyrifera) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
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
Close-up of blue eyed grass (Sisyrinchium) 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
Leaves of Canadian black snakeroot (Sanicula canadensis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019
Pleated leaves of Carolina buckthorn (Frangula caroliniana) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
Dwarf sundew (Drosera brevifolia) on a sandy path on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 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
Swarming spine fungus (Mucronella calva) on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
Flower buds of white-flowered milkweed (Asclepias variegata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
Rock-rose on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
Tiny cups of Ascomycete fungus Hyaloscypha britannica on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
Rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
Rock-rose (Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020
Macartney rose (Rosa bracteata) in a pine forest on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
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
Macartney rose (Rosa bracteata) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012
Rock-rose (Helianthemum carolinianum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
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