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3410-18. Pycnia of Juniper-hawthorn rust fungus (Gymnosporangium globosum) under a microscope in KOH, from upper surface of leaves of littlehip hawthorn (Crataegus spathulata), collected on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 Tissues infected by Juniper-hawthorn rust fungus (Gymnosporangium globosum) under a microscope in KOH, from upper surface of leaves of littlehip hawthorn (Crataegus spathulata), collected on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023  Leaves of littlehip hawthorn (Crataegus spathulata) with pycnia of Juniper-hawthorn rust fungus (Gymnosporangium globosum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023  Pycnia of Juniper-hawthorn rust fungus (Gymnosporangium globosum) on leaves of littlehip hawthorn (Crataegus spathulata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023  Juniper-hawthorn rust fungus (Gymnosporangium globosum) on littlehip hawthorn (Crataegus spathulata) with pycnia near a pond on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023  Cedar-hawthorn rust fungus (Gymnosporangium globosum) on littlehip hawthorn (Crataegus spathulata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Cedar-hawthorn rust fungus (Gymnosporangium globosum)(?) on littlehip hawthorn (Crataegus spathulata) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014  Leaves of littlehip hawthorn (Crataegus spathulata) with cedar-hawthorn rust fungus (Gymnosporangium globosum) in Lick Creek Park. College Station, Texas, May 6, 2024  Leaves of littlehip hawthorn (Crataegus spathulata) with cedar-hawthorn rust fungus (Gymnosporangium globosum) in Lick Creek Park. College Station, Texas, April 18, 2018  Littlehip hawthorn (Crataegus spathulata) with cedar-hawthorn rust fungus (Gymnosporangium globosum) in Lick Creek Park. College Station, Texas, May 6, 2024  Cedar-hawthorn rust fungus (Gymnosporangium globosum) on littlehip hawthorn (Crataegus spathulata) in Lick Creek Park. College Station, Texas, April 18, 2018  Cedar-hawthorn rust fungus (Gymnosporangium globosum) on leaves of Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, May 7, 2018  Spores and tissues of cedar-hawthorn rust fungus (Gymnosporangium globosum) collected in Lick Creek Park. College Station, Texas, May 6, 2024  Conidiospores and tissues of cedar-hawthorn rust fungus (Gymnosporangium globosum) collected in Lick Creek Park. College Station, Texas, May 6, 2024  Young leaves of parsley hawthorn (Crataegus marshallii) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Young leaves and flowers of hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  Reddish young leaves and flowers of hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  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  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  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  Leaves of parsley hawthorn (Crataegus marshallii) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019  Shoot of parsley hawthorn (Crataegus marshallii) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Parsley hawthorn (Crataegus marshallii) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, March 4, 2023  Shoot of parsley hawthorn (Crataegus marshallii) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, March 4, 2023  Flowers of hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  Early blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  Young leaves of hawthorn at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, March 8, 2019  Shoot of parsley hawthorn (Crataegus marshallii) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022  Parsley hawthorn (Crataegus marshallii) on Lone Star Hiking Trail east from Trailhead 3 in Sam Houston National Forest near Montgomery. Texas, October 9, 2022  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  Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022  Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022  Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  White grainy substance from Protomyces(?) fungus near parasitic Ascomycete fungus Coccoidella scutula from upper surface of leaves of red bay (Persea borbonia) under a microscope with x100 objective, collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  White grainy substance from Protomyces(?) fungus near parasitic Ascomycete fungus Coccoidella scutula from upper surface of leaves of redbay tree (Persea borbonia) under a microscope with x40 objective, collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Underside of greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  Orange spots on leaves of mountain ash caused by mountain ash-juniper rust fungus (Gymnosporangium cornutum) in Petiayarvi, north from Saint Petersburg. Russia, July 17, 2015  Blooming Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, March 20, 2023  Discoid black spots (ascostromata) of parasitic Ascomycete fungus Coccoidella scutula and white grainy substance from Protomyces(?) fungus through a binocular microscope on upper surface of leaves of redbay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  White flowers of Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, March 20, 2023  Tissues under a microscope of beech woodwart fungus (Hypoxylon fragiforme) from a fallen twig, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 5, 2023  Orange aeciospores under a microscope of mayapple rust fungus (Puccinia podophylli), collected in Sam Houston National Forest. Texas, March 4, 2023  Leaves of hairy bush clover (Lespedeza hirta) with rust fungus Uromyces lespedezae or may be Cercospora on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 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  Fungus Hyaloscypha britannica under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  Blooming hawthorn on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Asci of mushrooms Antracobia tristis(?) under a microscope in Congo Red, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023  Spores of mushrooms Antracobia tristis(?) under a microscope in lugol, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023  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  Fungus Hyaloscypha britannica under a microscope at low magnification in KOH, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  Asci of fungus Hyaloscypha britannica under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  White flowers of hawthorn on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Asci and paraphyses of mushrooms Antracobia tristis(?) under a microscope in Congo Red, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023  Spores of mushrooms Antracobia tristis(?) under a microscope in lactofenol blue, collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 28, 2023  Tissue of red Orbilia fungus from cut surface of a wet pine log through a microscope at low magnification collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest east from Trail Head No.4. Texas, March 15, 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  Fungus Hyaloscypha britannica under a microscope at higher magnification in Lugol, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  Spores of white smooth corticioid fungus from underside of burned pines, collected on Richards Loop Trail in Sam Houston National Forest four days before. Texas, July 27, 2023  Various spores of fungi in white grainy substance from Protomyces(?) fungus near ascostromata of fungus Coccoidella scutula from upper surface of leaves of red bay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Spores of brown bracket polypore mushroom Phellinopsis conchata(?) (Hymenochaetaceae) from a thin hawthorn(?), collected a day before in Sam Houston National Forest. Texas, January 2, 2024  Teliospores (teleutospores) of mayapple rust fungus (Puccinia podophylli) under a microscope, collected in Sam Houston National Forest. Texas, April 23, 2022  Spores of some rust fungus from underside of leaves of jumpseed (knotweed, Persicaria virginiana) collected in Sam Houston National Forest near Montgomery. Texas, July 3, 2022  Blooming hawthorn on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021  Flowers of hawthorn on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 11, 2021  Exfoliating bark on a hawthorn tree on floodplain on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, July 30, 2022  Details of various cells and spores around parasitic Ascomycete fungus Coccoidella scutula in white grainy substance from Protomyces(?) fungus from upper surface of leaves of red bay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Mycelium and spores of fungi around parasitic Ascomycete fungus Coccoidella scutula in white grainy substance from Protomyces(?) fungus from upper surface of leaves of red bay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Various cells and spores of fungi near parasitic Ascomycete fungus Coccoidella scutula in white grainy substance from Protomyces(?) fungus from upper surface of leaves of red bay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 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  Spores of some rust fungus from underside of leaves of jumpseed (knotweed, Persicaria virginiana) at low magnification, collected in Sam Houston National Forest near Montgomery. Texas, July 3, 2022  Yellow spores and mycelium (in KOH) of fungi around parasitic Ascomycete fungus Coccoidella scutula in white grainy substance from Protomyces(?) fungus from upper surface of leaves of red bay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Teliospores (teleutospores, black) of mayapple rust fungus (Puccinia podophylli) under a microscope, collected in Sam Houston National Forest near Montgomery. Texas, April 16, 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  Pattern of various cells and spores of fungi growing together with parasitic Ascomycete fungus Coccoidella scutula in white grainy substance from Protomyces(?) fungus from upper surface of leaves of red bay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Hairy bush clover (Lespedeza hirta) with rust fungus Uromyces lespedezae or may be Cercospora on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 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  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  Hawthorn Crataegus laevigata Rosea Flore Pleno in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, June 3, 2019  Shoots of hairy bush clover (Lespedeza hirta) with rust fungus Uromyces lespedezae or may be Cercospora on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022  Asci with spores (with x100 objective) of black Ascomycete fungus Coccoidella scutula from upper surface of leaves of redbay (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Asci with spores (with x40 objective) of black Ascomycete fungus Coccoidella scutula from upper surface of leaves of redbay tree (Persea borbonia) collected a day before in Little Thicket Nature Sanctuary. Texas, March 26, 2023  Asci and paraphyses through a microscope of a small orange Ascomycete fungus Anthracobia tristis or may be A. maurilabra collected 1/26/2022 from a bonfire site on Richards Loop Trail in Sam Houston National Forest. Texas, January 26, 2022  Yellow leaves of jumpseed (knotweed, Persicaria virginiana) with some rust fungus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022  Leaves of jumpseed (knotweed, Persicaria virginiana) on black background with some rust fungus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022  Brown bracket polypore mushroom Phellinopsis conchata(?) (Hymenochaetaceae) on a thin hawthorn(?) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Montgomery. Texas, January 1, 2024  Conidia of fungus Xylaria hypoxylon from an oak log collected three days before on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2023  Close-up of brown bracket polypore mushroom Phellinopsis conchata(?) (Hymenochaetaceae) on a thin hawthorn(?) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Montgomery. Texas, January 1, 2024  Caps of brown bracket polypore mushrooms Phellinopsis conchata(?) (Hymenochaetaceae) on a thin hawthorn(?) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Montgomery. Texas, January 1, 2024  Pores of brown bracket polypore mushroom Phellinopsis conchata(?) (Hymenochaetaceae) on a thin hawthorn(?) on South Wilderness Loop Trail at Little Lake Creek Wilderness in Sam Houston National Forest near Montgomery. Texas, January 1, 2024  Asci of a small orange Ascomycete fungus Anthracobia tristis or may be A. maurilabra together with green globular cells of algae(?) under a microscope collected 1/26/2022 from a bonfire site on Richards Loop Trail in Sam Houston National Forest. Texas, January 26, 2022  Shiny upper surface of golden reishi mushrooms (Ganoderma curtisii) collected in Pole Creek area of Sam Houston National Forest. Texas, August 6, 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 north from Montgomery. Texas, March 4, 2023  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  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  Asci of tiny cup mushrooms Hyaloscipha brotannica(?) under microscope collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022  Tissues of tiny cup mushrooms Hyaloscipha brotannica(?) under microscope collected on Richards Loop Trail in Sam Houston National Forest. Texas, February 27, 2022 |