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2458-31. 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

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Tiny bright orange cups on aecia of mayapple rust fungus (Allodus podophylli, Puccinia podophylli) underside of a leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 16, 2019
Tiny bright orange cups on aecia of mayapple rust fungus (Allodus podophylli, Puccinia podophylli) underside of a leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 4, 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
Close-up of bright orange cups 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 north from Montgomery. Texas, March 21, 2023
Bright orange 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 north from Montgomery. Texas, March 21, 2023
Underside of a leaf of May apple (Podophyllum peltatum) with aecia 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 16, 2019
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 north from Montgomery. Texas, March 4, 2023
Underside of a leaf of May apple (Podophyllum peltatum) with aecia 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 10, 2022
Underside of a leaf of May apple (Podophyllum peltatum) with aecia 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 4, 2023
Young plants of May apple (Podophyllum peltatum) with aecia 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 2, 2019
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
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
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
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
Leaf of of May apple (Podophyllum peltatum) with aecia 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 10, 2022
Underside of a leaf of May apple (mandrake, Podophyllum peltatum) with brown teleutospores 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
Young plants of May apple (Podophyllum peltatum) with aecia 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 4, 2023
Aecia of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on underside of leaves of May apple on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 29, 2020
Underside of a leaf of May apple (Podophyllum peltatum) with brown 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 10, 2021
Brown teleutospores of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on underside of a leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 10, 2021
Underside of a leaf of May apple (mandrake, Podophyllum peltatum) with brown teleutospores 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
Vein-bordered yellow areas on the leaf of May apple (mandrake, Podophyllum peltatum) with 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
Underside of May apple leaf with 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
Close-up of underside of May apple leaf with 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
Close-up of teleutosori of rust fungus Allodus podophylli (Puccinia podophylli) on underside of a leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 10, 2021
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 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 (teleutosori) of mayapple rust fungus Allodus podophylli (Puccinia podophylli) collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 6, 2024
Spores (teleutosori) at low magnification of mayapple rust fungus Allodus podophylli (Puccinia podophylli) collected on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 6, 2024
Two different kinds of spores (orange Aeciospores and black teliospores) of mayapple rust fungus (Puccinia podophylli) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022
Aeciospores (orange) of mayapple rust fungus (Puccinia podophylli) collected in Sam Houston National Forest. Texas, March 4, 2023
Aeciospores (orange) and some other spores of mayapple rust fungus (Puccinia podophylli) collected in Sam Houston National Forest. Texas, March 4, 2023
Orange aeciospores under a microscope of mayapple rust fungus (Puccinia podophylli), collected in Sam Houston National Forest. Texas, March 4, 2023
Aeciospores (orange) of mayapple rust fungus (Puccinia podophylli) collected in Sam Houston National Forest near Montgomery. Texas, April 16, 2022
Various spores of mayapple rust fungus (Puccinia podophylli) collected in Sam Houston National Forest. Texas, March 4, 2023
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
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
Teliospores (teleutospores) of mayapple rust fungus (Puccinia podophylli) under a microscope, collected in Sam Houston National Forest. Texas, April 23, 2022
Teliospores (teleutospores, black) of mayapple rust fungus (Puccinia podophylli) in KOH, collected in Sam Houston National Forest near Montgomery. Texas, April 9, 2023
Teliospores (teleutospores) of mayapple rust fungus (Puccinia podophylli) under a microscope at low magnification, collected in Sam Houston National Forest. Texas, April 23, 2022
Teliospores (teleutospores, black) of mayapple rust fungus (Puccinia podophylli) collected in Sam Houston National Forest near Montgomery. Texas, April 16, 2022
Teliospores (teleutospores, black) of mayapple rust fungus (Puccinia podophylli) under a microscope, collected in Sam Houston National Forest near Montgomery. Texas, April 16, 2022
Teliospores (teleutospores, black) of mayapple rust fungus (Puccinia podophylli) under a microscope at low magnification, collected in Sam Houston National Forest near Montgomery. Texas, April 16, 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
Young leaves of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 10, 2022
Flower 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
Young leaves and a flower bud of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 7, 2021
Young plant 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
Flower bud of May apple (mandrake, Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
Fresh leaves of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 25, 2024
Fresh leaves of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 9, 2020
Blooming May apple (mandrake, Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, March 10, 2018
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
Underside of greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 19, 2021
Flower bud of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 7, 2021
Leaf of May apple (Podophyllum peltatum) in Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022
Flower bud of May apple (Podophyllum peltatum) in Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022
Flower of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 10, 2024
Blooming May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 4, 2023
Flower of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 31, 2022
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
Shoot of May apple (Podophyllum peltatum) with a flower bud in Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022
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
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
Purple underside of leaves of crippled crane-fly orchid (Tipularia discolor) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
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
Flower bud of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 9, 2020
Leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 25, 2023
Flower bud of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 25, 2024
Fruit of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 10, 2021
Young leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 9, 2020
Leaf venation of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 9, 2020
Young leaves of trifoliate orange (Poncirus trifoliata) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
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
Bright orange leaves of a seedling of poison ivy on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 28, 2023
Young leaf of May apple (Podophyllum peltatum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
Greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
Young leaves of elm on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
Young leaves of elm on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 16, 2019
Young leaves of oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 16, 2019
Wilted basal leaves of hairy elephant foot with pine needle rust fungus (Coleosporium elephantopi, Coleosporium elephantopodis) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 27, 2018
Rust fungus Puccinia smilacis on greenbrier leaves under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022
Young red cottony leaves on an oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
Fresh red cottony leaves on an oak on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
Tiny white cups of Ascomycete fungus Hyaloscypha britannica under a fallen pine on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, December 15, 2019
Pine needle rust fungus (Coleosporium elephantopi, Coleosporium elephantopodis) on basal leaves of hairy elephant foot (Elephantopus tomentosus(?)) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest, near Huntsville. Texas, July 27, 2018
Young leaves of Virginia creeper on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 16, 2019
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
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 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
Young leaves of Virginia creeper on a tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
Fresh leaves of sweet gum (Liquidambar styraciflua) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 16, 2019
Young leaves of sweet gum (Liquidambar styraciflua) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 16, 2019
Orange underside with trapped spores of fungus Sporophagomyces chrysostomus attached below a resupinate polypore mushroom Fuscoporia on underside of a fallen broadleaf tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, January 12, 2022
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
Young leaves of black cherry Prunus serotina(?) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 30, 2019
Leaves of crippled crane-fly orchid (Tipularia discolor) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019

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