Red and black aphids on a plant of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, August 12, 2021
Red aphids on a leaf of frostweed in Lick Creek Park. College Station, Texas, July 15, 2014
Frostweed (Verbesina virginica) with aphids in Lick Creek Park. College Station, Texas, July 15, 2014
Black and red aphids on a leaf of frostweed in Lick Creek Park. College Station, Texas, July 15, 2014
Frostweed (Verbesina virginica) with black aphids in Lick Creek Park. College Station, Texas, June 9, 2019
Red aphids on a shoot of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, July 18, 2020
Black aphids on leaves of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, June 3, 2022
Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, August 26, 2021
Frostweed with aphids on Park Hudson Trail. College Station, Texas, June 30, 2014
Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 22, 2021
Small dark colored aphids on frostweed at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, July 30, 2021
Black and red bug on frostweed on Raccoon Run Trail in Lick Creek Park. College Station, Texas, August 23, 2020
Crab spider on 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
White flowers of frostweed (Verbesina virginica) on Raccoon Run Trail in Lick Creek Park. College Station, Texas, August 23, 2020
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
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, 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
Sugarcane aphids (Melanaphis sacchari) abundant on johnsongrass (Sorghum halepense) in Wolf Pen Creek Park. College Station, Texas, June 21, 2021
Close-up of sugarcane aphids (Melanaphis sacchari) on johnsongrass (Sorghum halepense) in Wolf Pen Creek Park. College Station, Texas, June 21, 2021
Ice flowers on frostweed in Lick Creek Park. College Station, Texas, January 3, 2022
Shoot of frostweed in Lick Creek Park. College Station, Texas, March 10, 2023
Ice flowers on frostweed in Lick Creek Park. College Station, Texas, December 1, 2020
Frostweed leaves in Lick Creek Park. College Station, Texas, June 10, 2012
Ice flowers on frostweed in Lick Creek Park. College Station, Texas, February 5, 2022
Sugarcane aphids (Melanaphis sacchari, Hemiptera: Aphididae) on johnsongrass (Sorghum halepense) in Wolf Pen Creek Park. College Station, Texas, June 21, 2021
Sugarcane aphids (Melanaphis sacchari) covering underside of a leaf of johnsongrass (Sorghum halepense) in Wolf Pen Creek Park. College Station, Texas, June 21, 2021
Young leaves of frostweed in Lick Creek Park. College Station, Texas, March 16, 2023
Details of ice flowers on frostweed in Lick Creek Park. College Station, Texas, December 1, 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 20, 2020
Ice crystals on frostweed seeds in Lick Creek Park. College Station, Texas, December 1, 2020
Feathery ice crystals on frostweed in Lick Creek Park. College Station, Texas, February 5, 2022
Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 26, 2022
Frostweed stem with ice crystals in Lick Creek Park. College Station, Texas, December 1, 2020
Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 3, 2022
Frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 11, 2013
Frostweed and a thistle on Racoon Run Trail in Lick Creek Park. College Station, Texas, July 17, 2013
Exoskeleton of a molted cicada on frostweed in Lick Creek Park. College Station, Texas, July 24, 2013
Close-up of ice crystals on a frostweed stem 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
Flowers of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 11, 2013
Ice crystals on a frostweed stems at morning in Lick Creek Park. College Station, Texas, January 3, 2022
Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) in Lick Creek Park. College Station, Texas, May 19, 2010
Hairy ice crystals on a frostweed stem in Lick Creek Park. College Station, Texas, December 1, 2020
Dry plant of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 13, 2023
Dry plants of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 8, 2023
Dry leaves of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, September 8, 2023
Texture of ice crystals on a frostweed stem in Lick Creek Park. College Station, Texas, December 1, 2020
Ice flowers on frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, December 1, 2020
Cracked stem of frostweed after a cold morning in Lick Creek Park. College Station, Texas, December 1, 2020
Frostweed (Verbesina virginica) with a love bug (Plecia) in Lick Creek Park. College Station, Texas, September 20, 2020
Frostweed (Verbesina virginica) after hard freeze in Lick Creek Park. College Station, Texas, January 3, 2022
Frostweed (Verbesina virginica) after hard freeze in Lick Creek Park. College Station, Texas, January 10, 2024
Bumblebee on flowers of frostweed (Verbesina virginica) in Lick Creek Park. College Station, Texas, October 23, 2013
Broken stem of frostweed exposing ice crystals in Lick Creek Park. College Station, Texas, December 1, 2020
Frostweed (Verbesina virginica) at frosty morning in Lick Creek Park. College Station, Texas, January 3, 2022
Frostweed (Verbesina virginica) on Post Oak Trail in Lick Creek Park. College Station, Texas, September 7, 2009
Curly ice crystals grown on frostweed after hard freeze in Lick Creek Park. College Station, Texas, January 3, 2022
Yellow flower of Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) in Lick Creek Park. College Station, Texas, May 3, 2008
Inflating stem of frostweed showing fluffy crystals of ice in Lick Creek Park. College Station, Texas, December 1, 2020
Curly ice crystals grown on frostweed after hard freeze in Lick Creek Park. College Station, Texas, November 13, 2019
Red-banded Hairstreak (Calycopis cecrops) butterfly on a frostweed flower in Lick Creek Park. College Station, Texas, September 12, 2008
Inflated stems of frostweed (Verbesina virginica) at cold 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
Dusky-Blue Groundstreak (Calycopis isobeon) butterfly on frostweed in Lick Creek Park. College Station, Texas, September 12, 2008
Inflated stems of frostweed (Verbesina virginica) at cold morning in Lick Creek Park. College Station, Texas, December 1, 2020
Yellow flower of Rosemary frostweed (Sun rose, Helianthemum rosmarinifolium) on Post Oak Trail in Lick Creek Park. College Station, Texas, May 15, 2009
Frostweed (Verbesina virginica) at frosty morning on a pipeline forest cutting 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 9, 2024
Stink bug nymph (Euschistus) on a seed head of frostweed in Lick Creek Park, on Iron Bridge Trail. College Station, Texas, October 19, 2008
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) on Park Hudson Trail. College Station, Texas, August 6, 2014
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. Petals of frost flowers are very delicate and will break when touched. 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. Frothy texture of frozen sap extruded from stem looks like cotton candy. College Station, Texas, January 9, 2010
Some grass in Lick Creek Park. College Station, Texas, August 12, 2021
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
Black aphids on curly dock (Rumex) in a ditch in Bee Creek Park. College Station, Texas, April 5, 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
Some orange shoot in Lick Creek Park. College Station, Texas, August 1, 2021
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
Large number of black aphids on curly dock (Rumex) in Bee Creek Park. College Station, Texas, April 5, 2022
Partridge pea (Cassia fasciculata) in Lick Creek Park. College Station, Texas, August 1, 2021
Young leaves of sycamore in Lick Creek Park. College Station, Texas, August 1, 2021
Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 1, 2021
Vine Desmodium paniculatum in Lick Creek Park. College Station, Texas, August 4, 2021
Turkey s cap (Malvaviscus drummondii) in Lick Creek Park. College Station, Texas, August 1, 2021
Shoot of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, August 12, 2021
Rattlebush shoot (Sesbania) in Lick Creek Park. College Station, Texas, August 4, 2021
Shoot of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, August 4, 2021
Leaves of sumpweed (Iva annua) in Lick Creek Park. College Station, Texas, August 4, 2021
Flower of thistle (Cirsium) in Lick Creek Park. College Station, Texas, August 4, 2021
Water primrose (Ludwigia) in Lick Creek Park. College Station, Texas, August 9, 2021
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