 Close-up of some grass with yellow spots on leaves from Pole Creek area of Sam Houston National Forest. Texas, August 6, 2023
 Underside of mushroom Agaricus auricolor on Forest Service Rd 231, on gravel side, with needles, leaves, without grass, on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Leaves of persimmon (Diospyros virginiana) prematurely turned yellow with black spots of fungus Pseudocercospora diospyricola in Bee Creek Park. College Station, Texas, August 31, 2023
 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 blister beetle ( from Pole Creek area of Sam Houston National Forest. Texas, August 6, 2023
 Leaves of goldenrod (Solidago) with yellow spots from goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Golden reishi mushrooms (Ganoderma curtisii) collected in Pole Creek area of Sam Houston National Forest. Texas, August 6, 2023
 Leaves of goldenrod (Solidago) showing yellow spots with uredinia of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Underside of golden reishi mushrooms (Ganoderma curtisii) collected in Pole Creek area of Sam Houston National Forest. Texas, August 6, 2023
 Uderside of leaves of goldenrod (Solidago) showing yellow spots with uredinia of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Shiny upper surface of golden reishi mushrooms (Ganoderma curtisii) collected in Pole Creek area of Sam Houston National Forest. Texas, August 6, 2023
 Leaves of May apple (mandrake, Podophyllum peltatum) with yellow spots caused by teleutosori of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, May 5, 2018
 Leaves of May apple (Podophyllum peltatum) with yellow spots caused by teleutosori of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 23, 2022
 Leaves of May apple (Podophyllum peltatum) with yellow spots caused by teleutosori of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 23, 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
 Bright yellow brittlegill mushroom Russula flavida on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Mushroom Tricholomopsis flammula on beech roots in area with no grass, near the creek, in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 30, 2023
 Gills of bright yellow brittlegill mushroom Russula flavida on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Small mushrooms Marasmius epiphyllus on petioles of oak leaves on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Leaves of plain-leaf pussytoes (Antennaria parlinii) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Late blooming yellow star-grass (Hypoxis) near the creek in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, October 20, 2019
 Cross section of bright yellow brittlegill mushroom Russula flavida on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Yellow fuzzy spotted Apatelodes caterpillar (Apatelodes torrefacta) on a grass stalk near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 22, 2022
 Small mushrooms Marasmius epiphyllus on petioles of oak leaves among pine needles on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Side view of yellow fuzzy spotted Apatelodes caterpillar (Apatelodes torrefacta) on a grass stalk near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 22, 2022
 Yellow pores of pineapple bolete mushroom (Boletellus ananas) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 5, 2020
 Young oak leaves near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Back lit young oak leaves near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Young leaves of willow oak near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Some plants with lanceolate leaves near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Young leaves of red maple near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Hairy leaves of bluestem grass on Richards Loop Trail in Sam Houston National Forest. Texas, August 28, 2021
 Yellow false truffle fungus (Rhizopogon luteolus) on a path near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 Yellow garden spider (Argiope aurantia, writing spider) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019
 Cross section of yellow false truffle fungus (Rhizopogon luteolus) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 Back lit young muscadine grape leaves near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Fresh leaves of paper mulberry (Broussonetia papyrifera)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 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
 Young leaves of paper mulberry (Broussonetia papyrifera)(?) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Red and yellow leaves of sweetgum on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 22, 2023
 Yellow leaves of sweetgum on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 22, 2023
 Yellow false truffle mushroom (Rhizopogon luteolus) near exposed pine roots near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 Close-up of interior section of yellow false truffle fungus (Rhizopogon luteolus) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, November 12, 2023
 Leaves of youpon holly with leaf spots fungi(?) taken from Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
 Green and yellow palmate leaves on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, August 14, 2021
 Dark red and yellow leaves of sweetgum on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, December 22, 2023
 Young leaves of Devil s Walking Stick (Hercules-club, Aralia spinosa) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, March 11, 2023
 Tiny mushrooms Marasmius epiphyllus(?) among fallen wet pine needles and oak leaves after a rain near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, April 14, 2023
 Leaf spots fungi(?) on underside of leaves of yaupon holly taken from Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
 Oak leaves with brown spots caused by a fungus(?) on Richards Loop Trail in Sam Houston National Forest, Texas, November 19, 2020
 Yellow elm leaves and Pine Spikes fungus (Chroogomphus vinicolor) under tall pines on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, December 2, 2023
 Yellow spots caused by some rust fungus on a leaf of jumpseed (knotweed, Persicaria virginiana) on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022
 Yellow leaves of catalpa(?) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, August 13, 2022
 Leaves of hickory with black spots and holes caused by insects(?) on Richards Loop Trail in Sam Houston National Forest. Texas, June 2, 2021
 Yellow star-grass flower in burned forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Blooming yellow star-grass in burned forest in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Blackening spots of white resupinate polypore mushroom Rigidoporus sanguinolentus (Physisporinus sanguinolentus) on lower part of a thick pine log in wet area on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 9, 2023
 Leaves of leaf-flower plant Phyllanthus niruri when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2024
 Greenish Tomentella(?) fungus covering large area on a fallen oak on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 25, 2020
 May apple leaf with yellow spots caused by teleutosori of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 6, 2024
 Yellow star-grass in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 4, 2008
 Close-up of brown and dark spots of bleeding porecrust mushroom Rigidoporus sanguinolentus (Physisporinus sanguinolentus) on lower part of a thick pine log in wet area on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, December 9, 2023
 Some rosette of leaves with purple spots on a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 15, 2023
 Young leaves of leaf-flower plant Phyllanthus niruri when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2024
 Close-up of leaves of leaf-flower plant Phyllanthus niruri when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, August 31, 2024
 Area of head of yellow fuzzy spotted Apatelodes caterpillar (Apatelodes torrefacta) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 22, 2022
 May apple (mandrake, Podophyllum peltatum) with yellow spots caused by teleutosori of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
 Yellow spots on a leaf of May apple (Podophyllum peltatum) caused by teleutosori of rust fungus Allodus podophylli (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 10, 2021
 Spores of some fungus from tar spots on lower parts of dry Arundinaria (bamboo) collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 5, 2023
 Spores of thin yellow crust fungus from elm wood without bark in wet area, collected a day before in Sam Houston National Forest. Texas, April 17, 2023
 Burned pine log with small spots of brown resupinate polypore mushroom Gloeophyllum carbonarium on Richards Loop Trail in Sam Houston National Forest. Texas, February 18, 2023
 Young leaves of elm on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Young leaves of a small tree near a creek on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Thin yellow crust of corticioid fungus Hypoxylon rubiginosum around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
 Dark red spots of Deutero fungus (Neocercosporidium smilacis, Cercospora smilacis) on leaves of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020
 Yellow variety of peat mold fungus (Chromelosporium fulvum) on soil and leaves in wet area on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, September 18, 2021
 Reddish young leaves of oak on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 22, 2020
 Black fungus Sphaeria subiculata (Rosellinia subiculata)(?) on whitish spots on a log of a broadleaf tree on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Richards. Texas, January 14, 2023
 Yellow garden spider (Argiope aurantia) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Close-up of thin yellow crust of corticioid fungus Hypoxylon rubiginosum around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
 Details of thin yellow crust of corticioid fungus Hypoxylon rubiginosum around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
 Spores of tiny yellow teeth mushroom covering large area on a fallen pine, collected in Sam Houston National Forest a day before. Texas, February 19, 2023
 Cap of mushroom Agaricus auricolor on Forest Service Rd 231 on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Yellow corticioid fungus Hypoxylon rubiginosum together with is brown anamorph (asexual stage) around tunnels of bark beetles on an elm log in wet area on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2023
 Leaves of Partridge pea (Cassia fasciculata) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Flowers of Yellow star-grass (woolly stargrass, Hypoxis hirsuta) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 29, 2009
 Tissues (in Congo Red dye) of tiny yellow teeth mushroom covering large area on a fallen pine, collected in Sam Houston National Forest a day before. Texas, February 19, 2023
 Yellow variety of peat mold fungus (Chromelosporium fulvum) on rotting leaves in muddy area under sow palmetto on Winters Bayou Trail in Sam Houston National Forest. Cleveland, Texas, September 18, 2021
 Leaves of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Leaves and a flower bud of May apple (Podophyllum peltatum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Cross section of mushroom Agaricus auricolor on Forest Service Rd 231 on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Splitgill mushrooms (Schizophyllum commune) on a fallen oak near Pole Creek in Sam Houston National Forest, east from Richards. Texas, January 8, 2023
 Carpet of leaves of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Leaves of chamberbitter plant (stonebreaker, Phyllanthus niruri) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, July 20, 2019
 Pattern of leaves of violet woodsorrel (Oxalis violacea) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Fluffy seeds of silver bluestem grass (Bothriochloa laguroides) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022
 Spores and basidia of mushroom Agaricus auricolor from Forest Service Rd 231 collected Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, April 28, 2023
 Urchin earthfan fungus (Thelephora penicillata) with grass on sandy soil near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, June 8, 2021
 Spores of hairy curtain crust mushrooms (Stereum hirsutum) collected a day before near Pole Creek in Sam Houston National Forest. Texas, April 29, 2023
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