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2674-16. 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, 2020Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 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  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  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  Tiny bright orange cups 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  Underside of a leaf with coltsfoot rust gall fungus, Puccinia poarum, in Sosnovka Park. Saint Petersburg, Russia, May 27, 2019  Vein-bordered yellow areas on the leaf of May apple (mandrake, Podophyllum peltatum) with 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  Leaves of May apple (Podophyllum peltatum) with yellow spots caused by 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  Underside of a leaf of May apple (Podophyllum peltatum) with 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  Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020  May apple (mandrake, Podophyllum peltatum) with yellow spots caused by 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  Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020  Blister-like pustules on underside and yellow-orange sunken spots on upper leaf surface of Geranium carolinianum caused by hollyhock or mallow rust fungus (Puccinia malvacearum), taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019  Underside of a leaf of May apple (mandrake, Podophyllum peltatum) with brown spores 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  Coltsfoot rust gall fungus, Puccinia poarum, in Sosnovka Park. Saint Petersburg, Russia, May 27, 2019  Leaves of May apple (mandrake, Podophyllum peltatum) with yellow spots caused by 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  Tiny bright orange cups 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  Sporangia 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  Young plants of May apple (Podophyllum peltatum) with 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  Orange-brown bumps on underside of Geranium carolinianum leaf caused by hollyhock or mallow rust fungus (Puccinia malvacearum), taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019  Sporangia 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  Young flowers of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008  Opening flowers of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008  Gayfeather (Liatris) flower on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020  Coltsfoot lower epidermis with rust (coltsfoot rust gall, Puccinia poarum) in Petiayarvi, north from Saint Petersburg. Russia, July 21, 2017  Close-up of flowers of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020  Seeds of gayfeather (Liatris) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020  Elegant gayfeather (pinkscale, Liatris elegans) on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020  Narrow-leaf gayfeather (Liatris mucronata), close up of flowers with imbricated phyllaries enclosing each cluster, on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008  Leaves of Geranium carolinianum with blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) 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  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  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  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  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  Back lit leaf with blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) on Geranium carolinianum taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019  Blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) on lower leaf surface of Geranium carolinianum taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019  Blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) on lower leaf surface of Geranium carolinianum on a lawn near apartments on George Bush Drive. College Station, Texas, March 11, 2019  Liatris (gayfeather) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014  Blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) on lower leaf surface and a stem of Geranium carolinianum taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019  Gayfeather (Liatris) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014  Gayfeather (Liatris) at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, August 19, 2012  Flower buds of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008  Shoot of gayfeather (Liatris) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 15, 2019  Flowers of gayfeather (Liatris) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 13, 2014  Pine needles with rust fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Pine needles with pustules of rust fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Gayfeather (Liatris) in front of a pine tree at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, August 19, 2012  Pine seedling with needle rust caused by fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Flowers of elegant gayfeather (pinkscale, Liatris elegans) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 23, 2018  Flower buds of blazing star (Liatris, gayfeather) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008  Flower spike of elegant gayfeather (pinkscale, Liatris elegans) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 23, 2018  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  Leaf of persimmon (Diospyros virginiana) prematurely turned yellow with black spots of fungus Pseudocercospora diospyricola on Richards Loop Trail in Sam Houston National Forest. Texas, August 21, 2020  Green lynx spider with immobilized prey, Gulf Fritillary (Agraulis vanillae) butterfly, on a flower of narrow-leaf gayfeather (Liatris mucronata) on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008  Orange leaf of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020  Green lynx spider (Peucetia viridans) injecting paralyzing venom into the body of Gulf Fritillary (Agraulis vanillae) butterfly on liatris (narrow-leaf gayfeather) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008  Oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020  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  Back lit oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020  Close-up of oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020  Leaves of Geranium carolinianum with blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 11, 2019  Leaves of Geranium carolinianum with blister-like pustules of hollyhock or mallow rust fungus (Puccinia malvacearum) taken from a lawn near apartments on George Bush Drive. College Station, Texas, March 13, 2019  Gayfeather (Liatris) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, August 9, 2009  Pine-pine gall rust (Endocronartium harknessii rust fungus) on Four Notch Loop Trail of Sam Houston National Forest near Huntsville. Texas, March 23, 2019  Thistle rust fungus (Puccinia punctiformis) taken from area of Udelnaya. Saint Petersburg, Russia, August 11, 2017  Yellow leaf of passion flower (Passiflora lutea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020  Skipper butterfgly on gayfeather (Liatris) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richardson, August 9, 2009  Fungus of creeping thistle rust (Puccinia punctiformis) taken from area of Udelnaya. Saint Petersburg, Russia, August 11, 2017  Venation of a sassafras leaf on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Fungus of creeping thistle rust (Puccinia punctiformis) in Siverskaya, 50 miles south from Saint Petersburg. Russia, July 13, 2017  Rust fungus Puccinia urticata on leaves of common (stinging) nettle in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017  Creeping thistle rust fungus (Puccinia punctiformis) in Siverskaya, 50 miles south from Saint Petersburg. Russia, July 13, 2017  Yellow web-like corticioid fungus under a pine(?) log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  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  Orange shoot of an oak on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Light orange corticioid (crust) fungus on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  White and orange corticioid (crust) fungus on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  Details of yellow web-like corticioid fungus under a pine(?) log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  Close-up of white and orange corticioid (crust) fungus on a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  Dusty yellow corticioid fungus on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  Young lobed leaf of mustang grape (Vitis mustangensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Young red lobed leaf of mustang grape (Vitis mustangensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  White corticioid (crust) fungus on a pine log turning orange in several spots on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  Red-brown rust fungus Puccinia punctiformis on the underside of the leaves of creeping thistle (Cirsium arvense) taken from area of Udelnaya. Saint Petersburg, Russia, August 11, 2017  Close-up of dusty yellow corticioid fungus on underside of a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 24, 2020  Red-brown rust fungus Puccinia punctiformis on the underside of the leaves of creeping thistle (Cirsium arvense) in Siverskaya, 50 miles south from Saint Petersburg. Russia, July 13, 2017  Underside of orange mock oyster mushrooms (Phyllotopsis nidulans) with some mold fungus under a pine log on Richards Loop Trail in Sam Houston National Forest. Texas, December 3, 2020  Close-up of orange droplets on some thin white corticioid fungus on underside of an oak log on North Wilderness Loop Trail in Sam Houston National Forest near Richards. Texas, December 27, 2020  Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020  Some thin white corticioid fungus on underside of an oak log exhuming orange water droplets on North Wilderness Loop Trail in Sam Houston National Forest near Richards. Texas, December 27, 2020  Orange corticioid fungus Leucogyrophana olivascens (or Serpula, Coniophora) on a fallen pine on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, February 8, 2020  Orange droplets on some thin white corticioid fungus on underside of an oak log near Pole Creek on North Wilderness Loop Trail in Sam Houston National Forest near Richards. Texas, December 27, 2020  Cedar-hawthorn rust fungus (Gymnosporangium globosum)(?) on hawthorn in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, May 18, 2014  Flowers of yellow wood sorrel (Oxalis stricta) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Yellow flower of rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Some brown cup Ascomycete fungus on a site of old bonfire on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020  Texture of a leaf of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020  Close-up of a leaf of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020 |