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3212-30. Frostweed (Verbesina virginica) with yellow and brown leaves with a rust fungus Coleosporium viguierae(?) on a pipeline right of way in Lick Creek Park. College Station, Texas, August 19, 2022Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 Yellow leaves of frostweed (Verbesina virginica) with a rust fungus Coleosporium viguierae(?) on a pipeline right of way in Lick Creek Park. College Station, Texas, August 19, 2022  Spores of a rust fungus Coleosporium viguierae(?) (under a microscope, in KOH solution) found on leaves of frostweed (Verbesina virginica) from a pipeline right of way in Lick Creek Park a day before. College Station, Texas, August 18, 2022  Spores of a rust fungus Coleosporium viguierae(?) (under a microscope, in Lugol solution) found on leaves of frostweed (Verbesina virginica) on a pipeline right of way in Lick Creek Park a day before. College Station, Texas, August 18, 2022  Rust fungus Coleosporium steviae(?) on leaves of late-flowering boneset (Eupatorium serotinum) on a pipeline clearing in Lick Creek Park. College Station, Texas, May 15, 2022  Black aphids on leaves of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, June 3, 2022  Frostweed (Verbesina virginica) at frosty morning on a pipeline forest cutting in Lick Creek Park. College Station, Texas, December 1, 2020  Leaves of goldenrod (Solidago) with yellow spots from goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Leaves of goldenrod (Solidago) showing yellow spots with uredinia of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Uderside of leaves of goldenrod (Solidago) showing yellow spots with uredinia of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Dry leaves of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 8, 2023  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 26, 2022  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 3, 2022  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, August 26, 2021  Late-flowering boneset (Eupatorium serotinum) with rust fungus Coleosporium steviae(?) on a pipeline clearing in Lick Creek Park. College Station, Texas, May 15, 2022  Frostweed (Verbesina virginica) after hard freeze in Lick Creek Park. College Station, Texas, January 3, 2022  Frostweed (Verbesina virginica) at frosty morning in Lick Creek Park. College Station, Texas, January 3, 2022  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. College Station, Texas, January 3, 2022  Inflated stems of frostweed (Verbesina virginica) at cold morning in Lick Creek Park. College Station, Texas, January 3, 2022  Red and black aphids on a plant of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, August 12, 2021  White flowers of frostweed (Verbesina virginica) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, August 23, 2020  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 11, 2013  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 20, 2020  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 24, 2012  Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 22, 2021  Frostweed (Verbesina virginica) on sewer line right of way in Lick Creek Park. After a heavy frost at night frostweed shows its ribbons of frost (as in ribbon candy). College Station, Texas, January 9, 2010  Flowers of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 11, 2013  Ice flowers on frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, December 1, 2020  Flowers of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 20, 2020  Frostweed (Verbesina virginica) with aphids in Lick Creek Park. College Station, Texas, July 15, 2014  Dry plants of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 8, 2023  Dry plant of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 13, 2023  Frostweed (Verbesina virginica) with black aphids in Lick Creek Park. College Station, Texas, June 9, 2019  Bumblebee on flowers of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 23, 2013  Frostweed (Verbesina virginica) with a love bug (Plecia) in Lick Creek Park. College Station, Texas, September 20, 2020  Red aphids on a shoot of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, July 18, 2020  Frostweed (Verbesina virginica) after hard freeze in Lick Creek Park. College Station, Texas, January 10, 2024  Frostweed (Verbesina virginica) on Post Oak Trail in Lick Creek Park. College Station, Texas, September 7, 2009  Crab spider on frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 22, 2021  Large urediospores of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?) collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Urediospores (under a microscope at low magnification) of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?) collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Urediospores (stacked image) of goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?) collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Frostweed (Verbesina virginica) on Park Hudson Trail. College Station, Texas, August 6, 2014  Inflated stems of frostweed (Verbesina virginica) at cold morning in Lick Creek Park. College Station, Texas, December 1, 2020  Flowers of frostweed (Verbesina virginica) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024  Frostweed (Verbesina virginica) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024  Frostweed (Verbesina virginica) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 9, 2024  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Frozen sap extruded from stem. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Frost ribbons sprouting from young plants. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. The stems split and exude sap that freezes into fascinating shapes. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Sap within its stalks bursts forth to form icy formations along its lower stems. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Petals of frost flowers are very delicate and will break when touched. College Station, Texas, January 9, 2010  Shoot of tall goldenrod (Solidago altissima) or may be fragrant goldenrod (S. odora) infected by goldenrod rust fungus Coleosporium solidaginis (Coleosporium asterum)(?), collected over a sewage line in Lick Creek Park. College Station, Texas, August 3, 2023  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Frothy texture of frozen sap extruded from stem looks like cotton candy. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Layers of ice are formed into exquisite patterns that curl into "petals" that resemble flowers. College Station, Texas, January 9, 2010  Tissues and spores of rust fungus Coleosporium steviae(?) from Eupatorium serotinum collected in Lick Creek Park. College Station, Texas, May 15, 2022  Various spores of rust fungus Coleosporium steviae(?) from Eupatorium serotinum under a microscope, collected in Lick Creek Park. College Station, Texas, May 15, 2022  Spores of rust fungus Coleosporium steviae(?) from Eupatorium serotinum under a microscope, collected in Lick Creek Park. College Station, Texas, May 15, 2022  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Thin layers of ice are often formed into exquisite patterns that curl into "petals" that resemble flowers. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) after hard freeze on sewer line right of way in Lick Creek Park. Petals of "frost-flowers" are easily melted and are usually visible in the early morning or in shaded areas. College Station, Texas, January 9, 2010  Frostweed (Verbesina virginica) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Bee Creek Park. College Station, Texas, September 23, 2024  Rust fungus Coleosporium steviae(?) on underside of a leaf of late-flowering boneset (Eupatorium serotinum) in Lick Creek Park. College Station, Texas, May 15, 2022  Frostweed (Verbesina virginica) on sewer line right of way in Lick Creek Park. At the first hard freeze, even though the plant has gone to seed and looks dead, the roots are still active. The sap freezes, splits open the stem and forms these "frost-flowers". College Station, Texas, January 9, 2010  Brown rotting leaves together with yellow leaves of winged elm on the ground after recent rains in Lick Creek Park. College Station, Texas, August 19, 2022  Brown and yellow dried leaves on the ground in Lick Creek Park. College Station, Texas, August 4, 2022  Shoot of frostweed (Verbesina virginica) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, April 3, 2022  Leaves of elephant foot plant (elephantopus tomentosus(?)) with needle rust fungus (Coleosporium elephantopi, Coleosporium elephantopodis) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 21, 2018  Needle rust fungus (Coleosporium elephantopi, Coleosporium elephantopodis) on basal leaves of elephant foot plant (elephantopus tomentosus(?)) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, July 21, 2018  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  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  Orange berry rust fungus Gymnoconia nitens on young leaves of blackberry in Lick Creek Park. College Station, Texas, March 14, 2022  Leaves of Carolina bristlemallow (Modiola caroliniana) with blister-like pustules of rust fungus Puccinia modiolae taken from Lick Creek Park. College Station, Texas, March 7, 2022  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  Frost-weed (Verbesina virginica) on Iron Bridge Trail in Lick Creek Park. College Station, Texas, September 12, 2008  Basal leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022  Underside of leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022  Close-up of leaves of cut-leaved evening primrose (Oenothera laciniata) with rust fungus Puccinia dioicae or may be P. oenotherae in Lick Creek Park. College Station, Texas, April 18, 2022  Brown and yellow vegetation in Lick Creek Park. College Station, Texas, August 7, 2022  Frostweed (Verbesina virginica) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, November 17, 2019  Leaves of spring scorpion grass (Myosotis macrosperma, Boraginaceae) with rust fungus Puccinia eatoniae var. myosotidis(?) near Racoon Run Trail in Lick Creek Park. College Station, Texas, March 7, 2022  Brown dry leaves on a sycamore in Lick Creek Park. College Station, Texas, August 4, 2022  Dry brown leaves on a blackjack oak in Lick Creek Park. College Station, Texas, August 4, 2022  Brown leaves on elm trees in Lick Creek Park. College Station, Texas, August 4, 2022  Brown leaves on post(?) oak in Lick Creek Park. College Station, Texas, August 2, 2022  Brown leaves on trees in Lick Creek Park. College Station, Texas, August 17, 2022  Pipeline right of way in Lick Creek Park. College Station, Texas, August 4, 2022  Crab spider on frostweed (Verbesina virginica) at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, October 31, 2021  Brown leaves of sycamore on the ground in Lick Creek Park. College Station, Texas, August 15, 2022  Brown dried leaves on trees in Lick Creek Park. College Station, Texas, August 7, 2022  Brown leaves on a small oak tree in Lick Creek Park. College Station, Texas, August 4, 2022  Brown dried leaves of sycamore in Lick Creek Park. College Station, Texas, August 7, 2022  Various dry green and brown leaves on the ground in Lick Creek Park. College Station, Texas, August 7, 2022  Brown dried leaves of elm on the ground in Lick Creek Park. College Station, Texas, August 2, 2022  Elm tree with brown dried leaves in Lick Creek Park. College Station, Texas, August 17, 2022  Brown dried leaves on water oak in Lick Creek Park. College Station, Texas, August 2, 2022  Brown leaves of grape and elm on the ground in Lick Creek Park. College Station, Texas, August 15, 2022  Rust fungus Coleosporium elephantopodis on leaves of elephant foot plant near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, June 18, 2022  Close-up of rust fungus Coleosporium elephantopodis on leaves of elephant foot plant near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, June 18, 2022  Leaves of cocklebur (Xanthium strumarium) with cocklebur rust fungus (Puccinia xanthii), over sewage line in Lick Creek Park. College Station, Texas, August 15, 2023  Light brown leaves of box elder on the ground in Lick Creek Park. College Station, Texas, August 7, 2022 |