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3510-11. Cedar-hawthorn rust fungus (Gymnosporangium globosum) on littlehip hawthorn (Crataegus spathulata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 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 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  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, May 6, 2024  Cedar-hawthorn rust fungus (Gymnosporangium globosum) on littlehip hawthorn (Crataegus spathulata) in Lick Creek Park. College Station, Texas, April 18, 2018  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, 2023  Leaves of littlehip hawthorn (Crataegus spathulata) with cedar-hawthorn rust fungus (Gymnosporangium globosum) in Lick Creek Park. College Station, Texas, April 18, 2018  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  Cedar-hawthorn rust fungus (Gymnosporangium globosum) on leaves of Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, May 7, 2018  Conidiospores and tissues of cedar-hawthorn rust fungus (Gymnosporangium globosum) collected in Lick Creek Park. College Station, Texas, May 6, 2024  Spores and tissues of cedar-hawthorn rust fungus (Gymnosporangium globosum) collected in Lick Creek Park. College Station, Texas, May 6, 2024  Shoot of parsley hawthorn (Crataegus marshallii) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Young leaves of parsley hawthorn (Crataegus marshallii) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Leaves of parsley hawthorn (Crataegus marshallii) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 20, 2019  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  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  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  Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  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 and flowers of 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  Reddish young leaves and flowers of hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  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  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  Blooming hawthorn on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  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  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  White flowers of hawthorn on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, March 28, 2021  Blooming Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, March 20, 2023  White flowers of Engelmann s hawthorn (Crataegus engelmannii) in Lick Creek Park. College Station, Texas, March 20, 2023  Cedar apple rust fungus Gymnosporangium juniperi-virginianae on a twig of red cedar near a road along north shore of Lake Somerville near Birch Creek Unit Somerville Lake State Park. Texas, March 14, 2018  White flowers of hawthorn on Lick Creek Greenway Trail. College Station, Texas, April 2, 2024  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  Hawthorn Crataegus laevigata Rosea Flore Pleno in Peter the Great Botanical Garden of Komarov Botanical Institute. Saint Petersburg, Russia, June 3, 2019  Pine needles with rust fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  Pine needles with pustules of rust fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  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  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  Rust fungus Puccinia smilacis on greenbrier leaves under a microscope, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 2022  Pine seedling with needle rust caused by fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Underside of greenbrier leaves with rust fungus Puccinia smilacis, collected on Richards Loop Trail in Sam Houston National Forest. Texas, March 9, 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  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  Warty spurge (Euphorbia spathulata) with white powdery mildew fungus Podosphaera euphorbiae on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022  Cauliflower mushroom (Sparassis spathulata) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009  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  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  Reticulate-seeded spurge (Euphorbia spathulata) infected by white powdery mildew fungus Podosphaera euphorbiae on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 16, 2022  Aecial pustules of a needle rust caused by fungus Coleosporium asterum on pine needles on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  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  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  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  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 in Bee Creek Park. College Station, Texas, February 26, 2024  Cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) on a twig of Eastern red cedar (Juniperus virginiana) in Wolf Pen Creek Park. College Station, Texas, March 13, 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  Cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) with gelatinous protrusions on Eastern red cedar (Juniperus virginiana) in Wolf Pen Creek Park. College Station, Texas, March 13, 2019  Cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) with gelatinous protrusions from Eastern red cedar (Juniperus virginiana) in Wolf Pen Creek Park. College Station, Texas, March 13, 2019  Cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) with gelatinous protrusions on a twig of red cedar (Juniperus virginiana) in Wolf Pen Creek Park. College Station, Texas, March 13, 2019  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  White flowers of hawthorn in Bee Creek Park. College Station, Texas, February 26, 2024  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  Close up of gelatinous protrusions of cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) on Eastern red cedar (Juniperus virginiana) in Wolf Pen Creek Park. College Station, Texas, March 13, 2019  Gelatinous protrusions of cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) on a twig of Eastern red cedar (Juniperus virginiana) in Wolf Pen Creek Park. College Station, Texas, March 13, 2019  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  Orange aeciospores of pine-pine gall rust (Endocronartium harknessii, Cronartium harknessii rust fungus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, March 23, 2019  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  Young leaves of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Seedling of some tree on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Shoot of gum Bumelia(?) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Gymnopus mushrooms on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Rush (Juncus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 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  Milky false truffle fungus (Zelleromyces cinnabarinus) on a sandy trail on Richards Loop Trail in Sam Houston National Forest. Texas, January 27, 2024  Shoot of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Shoot of muscat grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Some green shoots near a pond on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Mountain mint (Pycnanthemum)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Young leaves of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Shoot of fleabane (Pluchea) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Daisy fleabane (Erigeron) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Some young back lit leaves on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Cedar-apple gall (fungus Gymnosporangium juniperi-virginianae) on a twig of red cedar at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019  Spores of mold fungus Hypomyces cervinus from Helvella, collected on Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024  Green milkweed (Asclepias viridis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024  Wild lettuce (Lactuca floridana) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024 |