 Flat-topped goldenrod (Euthamia leptocephala) with leaf tar spots caused by gall midge Asteromyia euthamiae with a symbiotic fungus Botryosphaeria dothidea in Lick Creek Park. College Station, Texas, September 29, 2022
 Asteromyia gall midge fungus (Botryosphaeria dothidea) on leaves of flat-topped goldenrod (Euthamia leptocephala) in Lick Creek Park. College Station, Texas, June 1, 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
 Tissues of Asteromyia gall midge fungus (Botryosphaeria dothidea) under a microscope, collected in Lick Creek Park. College Station, Texas, June 1, 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
 Flat-topped goldenrod (bushy goldentop, Euthamia leptocephala) in Lick Creek Park. College Station, Texas, September 29, 2022
 Flat-topped goldenrod (bushy goldentop, Euthamia leptocephala(?)) in Lick Creek Park. College Station, Texas, September 26, 2022
 Flat-topped goldenrod (bushy goldentop, Euthamia leptocephala(?)) in Lick Creek Park. College Station, Texas, October 6, 2020
 Gall fungus Botryosphaeria dothidea (in Congo Red solution) collected from leaf tar spots on goldenrod on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 Black blister beetle (Epicauta pennsylvanica) on flat-topped goldenrod (bushy goldentop, Euthamia leptocephala(?)) near Post Oak Trail in Lick Creek Park. College Station, Texas, October 17, 2010
 Fungus Botryosphaeria dothidea (in Congo Red solution) collected from leaf tar spots on goldenrod on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022
 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
 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
 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
 Gall on a stem of Solidago caused by a parasitic goldenrod gall fly Eurosta solidaginis on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Gall on a stem of Solidago caused by a parasitic goldenrod gall fly Eurosta solidaginis on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Leaves of yaupon holly (Ilex vomitoria) with black spots caused by rust like fungus in Hensel Park. College Station, Texas, June 5, 2019
 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
 Tube galls caused by a midge Cecidomyia viticola on a leaf of mustang grape on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Ball-shaped swelling on a stem of Canada goldenrod (Solidago canadensis) caused by gall fly Eurosta solidagnis in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
 Red cone-shaped galls caused by a midge Cecidomyia viticola on a leaf of mustang grape on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Close-up of tube galls caused by a midge Cecidomyia viticola on a leaf of mustang grape on Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, April 27, 2022
 Shoot of tall goldenrod (Solidago altissima) or may be fragrant goldenrod (S. odora) infected by goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Dissected ball-shaped swelling on a stem of Canada goldenrod (Solidago canadensis) caused by gall fly Eurosta solidagnis in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 2, 2022
 Tissues of a tiny red sphere from underside of leaf of bluebonnet with white spots caused by a fungus(?), collected near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023
 Red velvety patches on a birch leaf caused by the velvet erineum gall eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
 Leaves of yaupon holly (Ilex vomitoria) with black spots caused by rust like fungus on black background in Hensel Park. College Station, Texas, June 5, 2019
 Gall on roots of crane s bill (Geranium carolinianum) caused by fungus Synchytrium geranii (Chytrids) taken from Bee Creek Park. College Station, Texas, March 23, 2021
 Blister-like pustules on underside and yellow-orange sunken spots on upper leaf surface of Carolina bristlemallow (Modiola caroliniana) caused by rust fungus Puccinia modiolae, taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019
 Black blotches on underside of the leaf of persimmon (Diospyros virginiana) caused by Cercospora leaf spot fungus Pseudocercospora diospyricola in Bee Creek Park. College Station, Texas, August 31, 2023
 Fleshy gall on a cowberry leaf caused by the fungus Exobasidium vaccinii taken from Posiolok near Vyritsa, south from Saint Petersburg, Russia, July 9, 2017
 Necrotic spots that develop into angular lesions on underside of a leaf of persimmon (Diospyros virginiana) caused by persimmon Cercospora leaf spot fungus Pseudocercospora diospyricola on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020
 Black blotches on leaves of persimmon (Diospyros virginiana) caused by Cercospora leaf spot fungus Pseudocercospora diospyricola in Lick Creek Park. College Station, Texas, August 12, 2021
 Flat winter rosette of stemless evening primrose (Oenothera triloba) with purple spots of spring dieback caused by a fungus Septoria oenotherae on Lake Somerville Trailway in area of Newman Bottom near Nails Creek Unit of Somerville Lake State Park. Texas, February 2, 2021
 Irregular, wart-like light green to reddish-green bladder galls on leaf surfaces of poison ivy produced by leaf gall mite Aculops toxicophagus in Bee Creek Park. College Station, Texas, June 10, 2019
 Close-up of globe flat sedge (Cyperus echinatus) in Lick Creek Park. College Station, Texas, June 13, 2022
 Persimmon leaf blister galls caused by bead gall mite Aceria theospyri on leaves of persimmon (Diospyros virginiana) on Richards Loop Trail in Sam Houston National Forest. Texas, May 26, 2022
 Basal leaf of stemless evening primrose (Oenothera triloba) with purple spots of spring dieback caused by a fungus Septoria oenotherae near Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, March 10, 2021
 Leaves of bur clover (Medicago polymorpha) with white spots of powdery mildew fungus Erysiphe trifoliorum(?) in Lick Creek Park. College Station, Texas, April 18, 2022
 Bur clover (Medicago polymorpha) with white spots of powdery mildew fungus Erysiphe trifoliorum(?) on pipeline right of way in Lick Creek Park. College Station, Texas, April 18, 2022
 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
 Velvety patches on a birch leaf caused by the velvet erineum gall eriophyid mite in Sosnovka Park. Saint Petersburg, Russia, August 21, 2017
 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
 Wart disease (false rust) caused by fungus Synchytrium geranii (Chytrids) on crane s bill (Geranium carolinianum) in Lick Creek Park. College Station, Texas, March 30, 2022
 Goldenrod (Solidago) in Lick Creek Park. College Station, Texas, October 3, 2022
 Black blotches on leaves of persimmon caused by Cercospora leaf spot fungus Pseudocercospora diospyricola under a microscope, collected in Bee Creek Park. College Station, Texas, August 31, 2023
 Close-up of a leaf of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 2023
 Underside of a leaf of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 2023
 Flowers of goldenrod (Solidago) in Lick Creek Park. College Station, Texas, October 3, 2022
 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 18, 2022
 Common true katydid on a leaf in Lick Creek Park. College Station, Texas, June 8, 2022
 Poison ivy leaf gall mite (irregular, wart-like light green to reddish-green bladder galls) in Bee Creek Park. College Station, Texas, June 10, 2019
 Green camouflage of common true katydid on a leaf in Lick Creek Park. College Station, Texas, June 8, 2022
 Side view of common true katydid on a leaf in Lick Creek Park. College Station, Texas, June 8, 2022
 Leaf of crane s bill (Geranium carolinianum) with a wart caused by fungus Synchytrium geranii on a lawn in Hensel Park. College Station, Texas, March 25, 2021
 Flat-topped cluster of pinkish flowers of milfoil (Achillea millefolium, yarrow) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, May 28, 2008
 Gall (Woolly growth) on a dry oak leaf in Wolf Pen Creek Park. College Station, Texas, November 30, 2017
 Rust fungus Coleosporium steviae(?) on underside of a leaf of late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, May 15, 2022
 Glasswort (Salsola imbricata) with fluffy growth caused by gall midges (gall gnats, Cecidomyidae) on rocky ridge of Jebel Fuwairit. Qatar, January 31, 2015
 Woolly growth on glasswort (Salsola imbricata) caused by gall midges (gall gnats, Cecidomyidae) taken from Purple Island (Jazirat Bin Ghanim). Al Khor, Qatar, May 29, 2015
 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
 Gall from underside of a leaf of squaw-weed (Senecio ampullaceus) in Bee Creek Park. College Station, Texas, April 9, 2024
 Crust fungus Giraffe Spots (Peniophora albobadia) in Lick Creek Park. College Station, Texas, January 15, 2020
 Clumps of white hair caused by gall midges (gall gnats, Cecidomyidae) on glasswort Salsola imbricata on rocky ridge of Jebel Fuwairit. Qatar, January 31, 2015
 Close-up of a gall caused by the fungus Exobasidium symploci-japonicae in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 20, 2021
 Glasswort (Salsola imbricata) with fluffy growth caused by gall midges (gall gnats, Cecidomyidae) in a village of Al Mashrab in area of Ras Laffan Farms. Northern Qatar, October 6, 2014
 Glasswort Salsola imbricata with clumps of white hair caused by gall midges (gall gnats, Cecidomyidae) in a village of Al Mashrab in area of Ras Laffan Farms. Northern Qatar, October 6, 2014
 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
 Giraffe Spots crust fungus (Peniophora albobadia) on a fallen twig in Lick Creek Park. College Station, Texas, January 21, 2021
 Giraffe spots fungus (Peniophora albobadia) on a fallen thin tree in Lick Creek Park. College Station, Texas, November 29, 2021
 Gall caused by the fungus Exobasidium symploci-japonicae on a young shoot of sweetleaf in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 20, 2021
 Leaf of muscadine grape with spots damaged by frost in Wolf Pen Creek Park. College Station, Texas, December 10, 2013
 Glasswort Salsola imbricata with dense growth of white hairs caused by gall midges (gall gnats, Cecidomyidae) in a village of Al Mashrab in area of Ras Laffan Farms. Northern Qatar, October 6, 2014
 Brown leaf of mustang grape and yellow leaf of muscadine grape on the ground after recent rains in Lick Creek Park. College Station, Texas, August 19, 2022
 Some white resupinate polypore mushroom with brown spots on a rotting oak log in Lick Creek Park. College Station, Texas, June 4, 2021
 Pattern of giraffe spots fungus (Peniophora albobadia) on a fallen thin tree in Lick Creek Park. College Station, Texas, November 29, 2021
 Close-up of giraffe spots fungus (Peniophora albobadia) on a fallen thin tree in Lick Creek Park. College Station, Texas, November 29, 2021
 Texture of giraffe spots fungus (Peniophora albobadia) on a fallen thin tree in Lick Creek Park. College Station, Texas, November 29, 2021
 White spots of corticioid fungus Dendrothele candida on bark of a fallen oak on Racoon Run Trail in Lick Creek Park. College Station, Texas, February 9, 2023
 Buttonbush with leaf galls caused by mites Aceria cephalanthi in Watson Rare Native Plant Preserve. Warren, Texas, June 25, 2022
 Large urediospores of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?) collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Urediospores (stacked image) of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?) collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Urediospores (under a microscope at low magnification) of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?) collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023
 Oak leaves with brown spots caused by a fungus(?) on Richards Loop Trail in Sam Houston National Forest, Texas, November 19, 2020
 Crust fungus Giraffe Spots (Peniophora albobadia, Dendrophora albobadia) on a fallen twig in Lick Creek Park. College Station, Texas, January 3, 2020
 Conidia of powdery mint mildew caused by fungus Neoerysiphe galeopsidis under microscope, from clasping henbit (henbit deadnettle, Lamium amplexicaule) collected in Bee Creek Park. College Station, Texas, March 25, 2022
 Texture of crust fungus Giraffe Spots (Peniophora albobadia, Dendrophora albobadia) on a fallen twig in Lick Creek Park. College Station, Texas, January 3, 2020
 Close-up of crust fungus Giraffe Spots (Peniophora albobadia, Dendrophora albobadia) on a fallen twig in Lick Creek Park. College Station, Texas, January 3, 2020
 Patch of crust fungus Giraffe Spots (Peniophora albobadia, Dendrophora albobadia) on a fallen twig in Lick Creek Park. College Station, Texas, January 3, 2020
 Leaf of mustang grape in Lick Creek Park. College Station, Texas, March 30, 2022
 Leaf of silk tree (Albizia julibrissin) in Bee Creek Park. College Station, Texas, June 24, 2022
 Drummond s beeblossom (Oenothera xenogaura, Gaura drummondii) with purple leaf spots developed under cool growing conditions in Bee Creek Park. College Station, Texas, March 23, 2021
 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
 Orange-brown bumps on underside of leaf of Carolina bristlemallow (Modiola caroliniana) caused by rust fungus Puccinia modiolae, taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019
 Venation of a dried leaf of sycamore in Lick Creek Park. College Station, Texas, August 2, 2022
 Young leaf of mustang grape in Lick Creek Park. College Station, Texas, March 30, 2022
 Spiky ice crystal on edges of a leaf in Lick Creek Park. College Station, Texas, February 5, 2022
 Pattern of a leaf of silk tree (Albizia julibrissin) in Bee Creek Park. College Station, Texas, June 24, 2022
 Conidia of powdery mint mildew caused by fungus Neoerysiphe galeopsidis under microscope in iodine solution, from clasping henbit (henbit deadnettle, Lamium amplexicaule) collected in Bee Creek Park. College Station, Texas, March 25, 2022
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