 Prickly seeds with hooks of Canadian black snakeroot (Sanicula canadensis) in Antique Rose Emporium. Independence, Texas, July 2, 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
 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
 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
 Green seeds with hooks of black snakeroot (Sanicula marilandica) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Canadian black snakeroot (Sanicula canadensis) in Lick Creek Park. College Station, Texas, April 22, 2021
 Leaves of Canadian black snakeroot (Sanicula canadensis) in Lick Creek Park. College Station, Texas, March 31, 2024
 Seed capsules of beefsteak plant (Perilla frutescens) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 26, 2020
 Dandelion like seed head on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 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
 Black seed pod of rattlepod (arrowhead rattlebox, Crotalaria sagittalis) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021
 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
 Seed head of oriental false hawksbeard (Youngia japonica, Crepis japonica)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Flowers of rose vervain (Glandularia canadensis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 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
 Climbing fern and Canadian moonseed vine on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Seed pods of coralbean (Erythrina herbacea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020
 Green lynx spider of a seed head of an aster on Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 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
 Red and black ripening blackberries on Richards Loop Trail in Sam Houston National Forest. Texas, April 11, 2020
 Gymnopus mushrooms on black background on Richards Loop Trail in Sam Houston National Forest. Texas, April 20, 2020
 Black-eyed susan (Rudbeckia hirta) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 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 3, 2024
 Clitocybula lacerata(?) mushrooms on black background on Richards Loop Trail in Sam Houston National Forest. Texas, April 6, 2020
 White mistflower (Havana snakeroot, Ageratina havanensis, Eupatorium havanense) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Canada wild rye (Elymus canadensis)(?) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022
 Rose vervain (Glandularia canadensis) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Blooming rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 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
 Two-toned caps of Gymnopus mushrooms on black background on Richards Loop Trail in Sam Houston National Forest. Texas, April 20, 2020
 Bolete mushroom Xanthoconium affine on black background on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 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
 Rose vervain (Glandularia canadensis) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Canada wildrye (Elymus canadensis)(?) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019
 Gills of oyster mushroom Pleurotus pulmonarius(?) on black background on Richards Loop Trail in Sam Houston National Forest. Texas, September 25, 2020
 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) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019
 Bolete mushrooms Pulveroboletus curtisii on black background on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, October 3, 2020
 Black spots of fungus Lophodermium (Rhytismataceae) on fallen pine needles on Richards Loop Trail in Sam Houston National Forest. Texas, April 6, 2020
 Small waxcap mushrooms Hygrocybe virginea var. ochraceopallida ( Cuphophyllus virgineus)(?) on black background on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020
 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
 Cap of black-edged Pluteus mushroom (Pluteus atromarginatus) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Leaf of persimmon (Diospyros virginiana) prematurely turned yellow with black spots of fungus Pseudocercospora diospyricola on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020
 Gulf Coast lemon Amanita mushroom (Amanita levistriata group) on black background on Richards Loop Trail in Sam Houston National Forest. Texas, May 20, 2020
 Gills of black-edged Pluteus mushroom (Pluteus atromarginatus) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2020
 Dry seed heads of Button snakeroot (yuccaleaf snakeroot, Eryngium yuccifolium) in Lick Creek Park. College Station, Texas, October 11, 2012
 Some green shoot on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Croton glandulosus 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
 Little bluestem(?) grass on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Fluffy seed head of small goldenrod (Solidago) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Seed pod of coral beans (Erythrina) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 21, 2019
 Distorted growth of oak leaves 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
 Foxtail like grass (Setaria) 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 12, 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 28, 2020
 Tendrils of greenbrier (Smilax) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 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
 Close-up of seed head of bushy bluestem (Andropogon glomeratus) on Forest Service Road 203 near Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Seed head of red milkweed (Asclepias tuberosa) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 19, 2019
 Fluffy seed head of tall goldenrod (Solidago) in dry weather on Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Black blotches on the leaf of persimmon (Diospyros virginiana) caused by Cercospora leaf spot fungus Pseudocercospora diospyricola on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020
 Tiny yellow flowers of Hypericum(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Southern wax myrtle (Myrica cerifera) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Close-up of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Slender woodoats (Chasmanthium laxum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Close-up of flowers of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Shoot of farkleberry (Vaccinium arboreum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Dayflower (Commelina) with blue flowers on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Bolete mushroom Boletus patrioticus on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Purple bindweed (Ipomoea cordatotriloba) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Purple pleatleaf (Alophia drummondii) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Back lit butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Southern dawnflower (Stylisma humistrata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Dry handeless coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Tall goldenrod (Solidago altissima) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Underside of fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Small fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Black balls of rust fungus Uromyces lespedezae or may be Cercospora from underside of leaves of hairy bush clover under a microscope at low magnifications collected on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 Berries of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Late-flowering boneset (Eupatorium serotinum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Cap of gunpowder Lepidella mushroom (Amanita onusta) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
 Pine barren flatsedge (Cyperus retrorsus) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Blooming mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
 Distorted oak leaves caused by insect larvae(?) 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
 Shoot of bush clover (Lespedeza thunbergii) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
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