 Leaves of Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 11, 2019
 Leaves of Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019
 Back lit leaf with blister-like pustules of rust fungus Puccinia modiolae on Carolina bristlemallow (Modiola caroliniana) taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019
 Blister-like pustules of rust fungus Puccinia modiolae on lower leaf surface of Carolina bristlemallow (Modiola caroliniana) on a lawn near apartments on George Bush Drive. College Station, Texas, March 11, 2019
 Blister-like pustules of rust fungus Puccinia modiolae on lower leaf surface of Carolina bristlemallow (Modiola caroliniana) taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019
 Blister-like pustules of rust fungus Puccinia modiolae on lower leaf surface and stem of Carolina bristlemallow (Modiola caroliniana) taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019
 Leaves of Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae near Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, March 10, 2021
 Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae in area of a former pond in Washington-on-the-Brazos State Historic Site. Washington, Texas, March 6, 2023
 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
 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
 Blooming Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae on a muddy shore of Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, March 10, 2021
 Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae on a shore of Flag Pond at Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, April 4, 2021
 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
 Spores of rust fungus Puccinia modiolae collected from Lick Creek Park. College Station, Texas, March 7, 2022
 Teliospores and urediniospores of rust fungus Puccinia modiolae at higher magnification collected from Lick Creek Park. College Station, Texas, March 7, 2022
 Spindle-shaped teliospores of rust fungus Puccinia modiolae at higher magnification collected from Lick Creek Park. College Station, Texas, March 7, 2022
 Leaves of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) near Racoon Run Trail in Lick Creek Park. College Station, Texas, March 7, 2022
 Underside of leaves of wood sorrel Oxalis stricta with rust fungus Puccinia oxalidis in Bee Creek Park. College Station, Texas, March 29, 2022
 Urediniospores of rust fungus Puccinia eatoniae var. myosotidis(?) from scorpion grass collected from Lick Creek Park 3/7/2022. College Station, Texas, March 8, 2022
 Underside of leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Basal leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Close-up of leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Urediniospores of rust fungus Puccinia eatoniae var. myosotidis(?) from scorpion grass collected from Lick Creek Park. College Station, Texas, March 7, 2022
 Leaves of yellow oxalis (Oxalis stricta) with sorrel rust fungus (Puccinia oxalidis) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 26, 2019
 Carolina mallow (modiola caroliniana) south from Lake Somerville. Texas, March 29, 2008
 Seedlings of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) near Racoon Run Trail in Lick Creek Park. College Station, Texas, March 7, 2022
 Close-up of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) near Racoon Run Trail taken from Lick Creek Park. College Station, Texas, March 7, 2022
 Young plant of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) near Racoon Run Trail in Lick Creek Park. College Station, Texas, March 7, 2022
 Urediniospores of sorrel rust fungus (Puccinia oxalidis), collected in Bee Creek Park. College Station, Texas, March 29, 2022
 Side view of seedlings of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) near Racoon Run Trail in Lick Creek Park. College Station, Texas, March 7, 2022
 Spores of sorrel rust fungus (Puccinia oxalidis) at low magnofication, collected in Bee Creek Park. College Station, Texas, March 29, 2022
 Small red flower of Carolina bristle mallow (modiola caroliniana) south from Lake Somerville. Texas, March 29, 2008
 Cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022
 Spores of different sizes of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Various types of spores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Teleutospores and aeciospores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Details of aeciospores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Aecial peridium of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Sorrel rust fungus (Puccinia oxalidis) on yellow oxalis (Oxalis stricta) in Bee Creek Park. College Station, Texas, March 29, 2022
 Orange berry rust fungus Gymnoconia nitens on young leaves of blackberry in Lick Creek Park. College Station, Texas, March 14, 2022
 Whitish peridial cells of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Details of aecial peridium of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Carolina mallow (modiola caroliniana) in Big Thicket park, on Pitcher Plant Trail. Texas, April 25, 2009
 Whitish peridial cells and aeciospores of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 2022
 Leaves of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) on sewage line right of way near Racoon Run Trail in Lick Creek Park. College Station, Texas, February 9, 2023
 Underside of leaves of cocklebur (Xanthium strumarium) damaged by cocklebur rust fungus (Puccinia xanthii), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Upper and lowers sides of leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Biseptate teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Details of teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Large teliospores (in KOH) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium), collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Teliospores (in KOH, low magnification) of cocklebur rust fungus (Puccinia xanthii) from underside of leaves of cocklebur (Xanthium strumarium) collected over sewage line in Lick Creek Park a day before. College Station, Texas, August 13, 2023
 Some tubular structure of rust fungus Puccinia dioicae under microscope, collected from cut-leaved evening primrose collected in Lick Creek Park. College Station, Texas, April 18, 2022
 Greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Basal leaves of gayfeather (Liatris) with orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on basal leaves of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Aecial peridium showing the whitish peridial cells and aeciospores of rust fungus Puccinia dioicae under microscope at low magnification, collected from cut-leaved evening primrose in Lick Creek Park. College Station, Texas, April 18, 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
 Underside of basal leaves of gayfeather (Liatris) with orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Close-up of orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on basal leaves of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 Sorrel rust fungus (Puccinia oxalidis) on yellow oxalis (Oxalis stricta) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 26, 2019
 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
 Common yellow oxalis (Oxalis stricta) with sorrel rust fungus (Puccinia oxalidis) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 26, 2019
 Common yellow oxalis (Oxalis stricta) with sorrel rust fungus (Puccinia oxalidis) in wet area on Raccoon Run Trail in Lick Creek Park. College Station, Texas, March 22, 2019
 Spores of rust fungus Puccinia eatoniae var. myosotidis(?) collected a day before in Lick Creek Park. College Station, Texas, February 10, 2023
 Spores of rust fungus Puccinia eatoniae var. myosotidis(?) at low magnification, collected in Lick Creek Park. College Station, Texas, February 10, 2023
 Spores of rust fungus Puccinia eatoniae var. myosotidis(?) (stacked image), collected in Lick Creek Park. College Station, Texas, February 10, 2023
 Yellow leaves of frostweed (Verbesina virginica) with a rust fungus Coleosporium viguierae(?) on a pipeline right of way in Lick Creek Park. College Station, Texas, August 19, 2022
 Frostweed (Verbesina virginica) with yellow and brown leaves with a rust fungus Coleosporium viguierae(?) on a pipeline right of way in Lick Creek Park. College Station, Texas, August 19, 2022
 Rust fungus Coleosporium steviae(?) on leaves of late-flowering boneset (Eupatorium serotinum) on a pipeline clearing in Lick Creek Park. College Station, Texas, May 15, 2022
 Spores of rust fungus Puccinia eatoniae var. myosotidis(?) from spring scorpion grass (Myosotis macrosperma), collected a day before in Lick Creek Park. College Station, Texas, February 10, 2023
 Spores of a rust fungus Coleosporium viguierae(?) (under a microscope, in KOH solution) found on leaves of frostweed (Verbesina virginica) from a pipeline right of way in Lick Creek Park a day before. College Station, Texas, August 18, 2022
 Cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Orange aeciospores of blackberry rust fungus Gymnoconia nitens from Lick Creek Park. College Station, Texas, March 14, 2022
 Aeciospores of blackberry rust fungus Gymnoconia nitens at low magnification from Lick Creek Park. College Station, Texas, March 14, 2022
 Shoot of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023
 Spores of a rust fungus Coleosporium viguierae(?) (under a microscope, in Lugol solution) found on leaves of frostweed (Verbesina virginica) on a pipeline right of way in Lick Creek Park a day before. College Station, Texas, August 18, 2022
 Texture of echinulate spores of blackberry rust fungus Gymnoconia nitens from Lick Creek Park. College Station, Texas, March 14, 2022
 Blister-like fruiting structures of fungus Ophiodothella vaccinii on infected leaves of farkleberry (Vaccinium arboreum) in Lick Creek Park. College Station, Texas, October 9, 2018
 Blister-like fruiting structures of fungus Ophiodothella vaccinii on infected leaves of farkleberry (Vaccinium arboreum) in Lick Creek Park. College Station, Texas, August 2, 2019
 Seedlings of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) on sewage line right of way near Racoon Run Trail in Lick Creek Park. College Station, Texas, February 9, 2023
 Pleated leaves of Carolina buckthorn (Frangula caroliniana) on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022
 Leaves and flowers of Carolina ponysfoot (Dichondra carolinensis) in Lick Creek Park. College Station, Texas, March 5, 2019
 Orange-yellow rust fungus Puccinia poarum (Puccinia liatridis) on a leaf of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020
 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
 Carolina anemone (Anemone caroliniana) on a lawn on Lick Creek Greenway Trail. College Station, Texas, February 16, 2024
 Spring scorpion grass (Myosotis macrosperma) with rust fungus Puccinia eatoniae var. myosotidis(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022
 Close-up of a greenbrier leaf with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
 Rust fungus Puccinia urticata on leaves of common (stinging) nettle in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017
 Underside of a leaf of spring scorpion grass (Myosotis macrosperma) with rust fungus Puccinia eatoniae var. myosotidis(?) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, March 12, 2022
 Aeciospores of rust fungus Puccinia podophylli from a May apple leaf under a microscope, collected from Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 10, 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, April 23, 2022
 Tiny bright orange cups of aecia on the underside of leaves of mayapple caused by mayapple rust fungus Allodus podophylli(Puccinia podophylli) on underside of leaves of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
 Underside of leaves of squaw-weed (Senecio ampullaceus) with sunflower white rust fungus Pustula tragopogonis (Pustula obtusata, Albugo tragopogonis)(?) in Lick Creek Park. College Station, Texas, March 20, 2023
 Aecia of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on underside of leaves of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
 Aeciospores of rust fungus Puccinia podophylli from a May apple leaf under a microscope at higher magnification, collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 10, 2022
|