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2756-19. 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, 2020Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 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 18, 2022  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  Black blotches on underside of the leaf of persimmon (Diospyros virginiana) caused by Cercospora leaf spot fungus Pseudocercospora diospyricola in Bee Creek Park. College Station, Texas, August 31, 2023  Black blotches on leaves of persimmon (Diospyros virginiana) caused by Cercospora leaf spot fungus Pseudocercospora diospyricola in Lick Creek Park. College Station, Texas, August 12, 2021  Black blotches on leaves of persimmon caused by Cercospora leaf spot fungus Pseudocercospora diospyricola under a microscope, collected in Bee Creek Park. College Station, Texas, August 31, 2023  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  Persimmon leaf blister galls caused by bead gall mite Aceria theospyri on leaves of persimmon (Diospyros virginiana) on Richards Loop Trail in Sam Houston National Forest. Texas, May 26, 2022  Leaves of persimmon (Diospyros virginiana) prematurely turned yellow with black spots of fungus Pseudocercospora diospyricola in Bee Creek Park. College Station, Texas, August 31, 2023  Oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 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  Yellow spots caused by some rust fungus on a leaf of jumpseed (knotweed, Persicaria virginiana) on floodplain on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022  Circular dark purplish red spots with centers fading with age caused by Deutero fungus (Neocercosporidium smilacis, Cercospora smilacis) on leaves of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020  Leaves of Common Greenbrier (Smilax rotundifolia) mottled "leopard print" look on black background. The red spots often form around areas of minor stress. Smilax leaves notoriously host various benign fungal endophytes or leaf spots (like Cercospora or Puccinia). In autumn, the tissues surrounding these tiny infection points often turn bright red (producing anthocyanin as a defense mechanism) long before the rest of the yellowing leaf dies, creating this vivid speckled contrast. Richards Loop Trail in Sam Houston National Forest. Texas, November 15, 2025  Oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, June 17, 2018  Close up of oak leaf anthracnose (leaf spot fungus, Dicarpella dryina, Tubakia dryina) on Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, June 17, 2018  Close-up of a leaf of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 2023  Underside of a leaf of curly dock (Rumex crispus) with reddish purple blotches caused by fungus Ramularia rubella in Bee Creek Park. College Station, Texas, February 24, 2023  Persimmon (Diospyros virginiana) in Lake Bryan Park. Bryan, Texas, August 26, 2012  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  Fruits of persimmon (Diospyros virginiana) in Lake Bryan Park. Bryan, Texas, August 26, 2012  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  Underside of a leaf of jumpseed (knotweed, Persicaria virginiana) with brown spores of some rust fungus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 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  Wild persimmon (Diospyros virginiana) near Gan s Creek trail head (blue trail) in Rock Bridge State Park. Columbia, Missouri, September 16, 2005  Fruit of persimmon (Diospyros virginiana) on north shore of Lake Somerville. Texas, September 27, 2008  Venation of a sassafras leaf on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Speckled 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  Orange leaf of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020  Texture of a leaf of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, December 15, 2020  Woolly growth (gall) on a dry oak leaf on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020  Deutero fungus (Neocercosporidium smilacis, Cercospora smilacis) on leaves of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020  Red leaf of sassafras at Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, August 19, 2012  Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020  Oak leaves with brown spots caused by a fungus(?) on Richards Loop Trail in Sam Houston National Forest, Texas, November 19, 2020  Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021  Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021  Dark red spots of Deutero fungus (Neocercosporidium smilacis, Cercospora smilacis) on leaves of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020  Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020  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  Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021  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  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  Large catalpa-like leaf with pronounced veins on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020  Hickory leaf with dense cover of Phylloxera galls on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, May 2, 2020  Collected fruits of persimmon (Diospyros virginiana) on a log in Birch Creek Unit of Somerville Lake State Park. Texas, September 8, 2012  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  Yellow leaf of passion flower (Passiflora lutea) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 20, 2020  Pine seedling with needle rust caused by fungus Coleosporium asterum on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020  Shield-backed bug (Scutelleridae) on a leaf of yaupon holly in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008  Fungus Botryosphaeria dothidea (in Congo Red solution) collected from leaf tar spots on goldenrod on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022  Fruits of persimmon (Diospyros virginiana) in Lake Bryan Park. Bryan, Texas, September 18, 2009  Gall fungus Botryosphaeria dothidea (in Congo Red solution) collected from leaf tar spots on goldenrod on Richards Loop Trail in Sam Houston National Forest. Texas, July 10, 2022  Purple pleat-leaf (Pinewood lily, Alophia drummondii, Eustylis purpurea) on Little Lake Creek Loop Trail in Sam Houston National Forest, with 3 large rounded dark purple outer petal segments and 3 boat-like inner petals with a yellow spot at central pithed-in area. Richards, Texas, June 22, 2008  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  Texas leaf cutting ant (Atta texana) on a sand mound on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020  Plants of jumpseed (knotweed, Persicaria virginiana) on floodplain with yellowing caused by some fungus on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, July 3, 2022  Texas leaf cutting ants (Atta texana) excavating sand on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020  Narrow-leaf gayfeather (Liatris mucronata(?)) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024  Texas leaf cutting ants (Atta texana) carrying sand bits on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020  Greenish-yellow, bell-shaped flower of persimmon (Diospyros virginiana) in Washington-on-the-Brazos State Historic Site. Washington, Texas, May 9, 2009  Leaves of hickory with black spots and holes caused by insects(?) on Richards Loop Trail in Sam Houston National Forest. Texas, June 2, 2021  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  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  Leaf-like lobes of jelly fungus Phaeotremella frondosa on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 6, 2021  Leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Skeletonized leaf in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, May 26, 2012  Caterpillar munching leaf of an oak on Richards Loop Trail in Sam Houston National Forest. Texas, September 8, 2021  Various leaves with black fungus dots Mycosphaerella leaf spot (Mycosphaerella microsora)? in Lisiy Nos, west from Saint Petersburg. Russia, October 9, 2016  Leaf-like lobes of jelly fungus Phaeotremella frondosa on wood on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 6, 2021  Young leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022  Young leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Reddish leaf of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 9, 2022  Leaf-like jelly fungus Phaeotremella frondosa on a fallen tree branch on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, August 6, 2021  Deutero fungus (Neocercosporidium smilacis, Cercospora smilacis) on leaves of common greenbrier (Smilax rotundifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 2022  Leaf of an aquatic plant in ultraviolet light from Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024  Green lynx spider on a leaf of greenbrier on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023  Back lit Phylloxera galls on a hickory leaf on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024  Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Distorted oak leaves caused by insect larvae(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020  Black spots of fungus Lophodermium (Rhytismataceae) on fallen pine needles on Richards Loop Trail in Sam Houston National Forest. Texas, April 6, 2020  Uncurling leaf of bracken fern (Pteridium aquilinum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 23, 2023  Blooming narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Fresh leaf of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022  Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Back lit leaf of black cherry Prunus serotina on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, April 16, 2019  Purple pleat-leaf (Pinewood lily, Alophia drummondii) on Richards Loop Trail in Sam Houston National Forest. Texas, June 9, 2022  Woolly growth (galls) on underside of a hickory(?) leaf on Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 2022  Young leaf of bracken fern (Pteridium aquilinum) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024  Close-up of flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021  Pattern of a young leaf of bracken fern (Pteridium aquilinum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2023  Green nymph of grasshopper on a dried leaf of bracken fern on Richards Loop Trail in Sam Houston National Forest. Texas, June 29, 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  Curling of leaves caused by blackberry psyllid (Trioza tripunctata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020 |