 Carolina buckthorn (Frangula caroliniana) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023
 Young leaves of Carolina buckthorn (Frangula caroliniana) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Shoot of Carolina buckthorn (Frangula caroliniana) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Carolina shield lichen (Canoparmelia caroliniana) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on a pine on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on a tree on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Young leaves of Alder Buckthorn (Frangula alnus) east from Toksovo, 10 miles north from Saint Petersburg. Russia, June 17, 2011
 Young leaves of an oak 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
 Carolina shield lichen (Canoparmelia caroliniana)(?) on a pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
 Carolina shield lichen (Canoparmelia caroliniana)(?) on a tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
 Carolina Shield Lichen (Canoparmelia caroliniana) on a pine on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 24, 2021
 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
 Young leaves of hickory on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Carolina Shield Lichen (Canoparmelia caroliniana) on a fallen tree on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 24, 2021
 Leaves of Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae on a receding shore of Lake Conroe on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, February 16, 2020
 Leaves of Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae taken from Lick Creek Park. College Station, Texas, March 7, 2022
 Carolina shield lichen (Canoparmelia caroliniana) on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on a tree on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on a standing pine on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on tree bark on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on a deciduous tree on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
 Fall colors of Alder Buckthorn (Frangula alnus) in swampy area in Sosnovka Park. Saint Petersburg, Russia, September 29, 2015
 Young leaves of a small oak on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Leaves of blackjack oak and greenbrier on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Curled leaves of beautyberry on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Grass with pleated leaves variable panicgrass (Dichanthelium commutatum(?)) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 5, 2020
 Black berries of alder buckthorn (Frangula alnus, Russian name Krushina) in Sestroretsk, north-west from Saint Petersburg. Russia, July 30, 2016
 Blooming Carolina jessamine (Gelsemium sempervirens) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Carolina shield lichen (Canoparmelia caroliniana) on a pine in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Yellow trumpet of Carolina jessamine (Gelsemium sempervirens) 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
 Leaves of paper mulberry (Broussonetia papyrifera)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Yellow leaves of bracken fern under pines on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Carolina shield lichen (Canoparmelia caroliniana) on a standing pine in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Carolina shield lichen (Canoparmelia caroliniana) on a deciduous tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
 Young leaves of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Carolina mallow (modiola caroliniana) in Big Thicket park, on Pitcher Plant Trail. Texas, April 25, 2009
 Some young back lit leaves on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Young leaves of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Young leaves of chamberbitter plant (stonebreaker, Phyllanthus niruri) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2022
 Greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Underside of greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Rust fungus Puccinia smilacis on greenbrier leaves under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Yellow trumpet of Carolina jessamine and a blue violet on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 13, 2022
 Shoot of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Yellow leaves of laurel greenbrier (catbriar, bamboo vine, Smilax laurifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 Urediniospores of rust fungus Puccinia smilacis on greenbrier leaves under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Urediniospores of rust fungus Puccinia smilacis on greenbrier leaves under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Thistle (Cirsium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Shoot of sweetgum 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
 Blooming hawthorn 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 dewberry on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Flower of Carolina jessamine on elm twig on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest east from Trail Head No.4. Texas, March 15, 2022
 Back lit flowers of dewberry 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
 Blooming Carolina jessamine (Gelsemium sempervirens) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 2, 2022
 Flower of Carolina jessamine fallen on bracken fern on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest east from Trail Head No.4. Texas, March 15, 2022
 Yellow flower of Carolina jessamine fallen on a pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest east from Trail Head No.4. Texas, March 15, 2022
 Leaves of hairy bush clover (Lespedeza hirta) with rust fungus Uromyces lespedezae or may be Cercospora on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 Woolly-white (Hymenopappus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Yellow trumpet of Carolina jessamine (Gelsemium sempervirens) on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 2, 2022
 Red hairy shoot of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Young leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Racemed milkwort (Polygala polygama) 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
 Paper mulberry (Broussonetia papyrifera)(?) 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
 Green milkweed (Asclepias viridis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Blooming poison ivy (Toxicodendron radicans) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Reddish shoots of some common bush 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
 Flowers of woolly-white (Hymenopappus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Reddish shoot of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Blooming woolly-white (Hymenopappus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 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
 Shoot of paper mulberry (Broussonetia papyrifera) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Small plants of poison ivy (Toxicodendron radicans) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Close-up 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
 Flowers of blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 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
 White-flowered milkweed (Asclepias variegata) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2022
 Black balls of rust fungus Uromyces lespedezae or may be Cercospora from underside of leaves of hairy bush clover collected on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 Young leaves of soft greeneyes (Berlandiera pumila) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, April 30, 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
 Fallen trumpet of Carolina jessamine (Gelsemium sempervirens) on bracken fern on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 2, 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
 Deutero fungus (Neocercosporidium smilacis, Cercospora smilacis) on leaves of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 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
 Swarming spine fungus (Mucronella calva) on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
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