 Garlic mustard and cut leaf toothwort in background on Mount Rose Ridge Trail in Stony Brook Watershed park. Pennington, New Jersey, April 29, 2007
 A small flower on Mount Rose Ridge Trail in Stony Brook Watershed park. Pennington, New Jersey, April 29, 2007
 Emerging may apple on Stony Brook trail in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 A turtle on Stony Brook trail in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Blue violets on Stony Brook trail in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Yellow trout lily on Stony Brook trail in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Garlic mustard near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Leaves of skunk cabbage near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Fig buttercup flowers and a trout lily near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Lesser Celandine (fig buttercup flower) near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Skunk cabbage and fig buttercup flowers near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Pilewort (fig buttercup flowers) carpeting area near Stony Brook in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Trout lilies on Meadow Trail in Stony Brook - Millstone Watershed Main Reserve. Pennington, New Jersey, April 28, 2007
 Deeply divided umbrella-like leaf of May apple (mandrake) in a park of Institute for Advanced Study. Princeton, New Jersey, April 18, 2007
 Deeply divided umbrella-like young leaf of May apple near Boulder Field in John Witherspoon Woods park. Princeton, New Jersey, April 26, 2007
 A suspension bridge across Stony Brook in the park of Institute for Advanced Studies. Princeton, New Jersey, March 29, 2007
 Stony Brook Meeting House near Quaker Road. Princeton, New Jersey, March 29, 2007
 An old car on Red Trail in Six Mile Run Reservoir, near Cross Brook. Somerset, New Jersey, April 29, 2007
 Young leaf of poison ivy in Delaware and Raritan Canal State Park near Carnegie Lake. Princeton, New Jersey, May 8, 2007
 Rapidly growing vegetative shoot of prickly pears cactus (Opuntia) with fleshy, green, leaf-like phylloclades in Antique Rose Emporium. Independence, Texas, April 19, 2009
 A stone bridge (1937) across Heathcote Brook in Cook Natural Area. Kingston, New Jersey, April 28, 2007
 A stone bridge across Heathcote Brook in Cook Natural Area at sunset. Kingston, New Jersey, April 2, 2007
 Umbrella-like May apple leaves near boulder field in John Witherspoon Woods park. Princeton, New Jersey, April 27, 2007
 Heathcote Brook Branch east from Extended Stay America hotel at Road 1. South Brunswick, New Jersey, April 15, 2007
 Heathcote Brook Branch overflowing Road 1, near Raymond Road exit. South Brunswick, New Jersey, April 15, 2007
 View of Mount Minsi from Mount Tammany. Delaware Water Gap, New Jersey, March 31, 2007
 A deer on Linear Park Trail (former railroad) in Cook Natural Area, near Ridge Road. Kingston, New Jersey, May 11, 2007
 Yellow leaf of Sodom Apple (Calotropis procera) on Al Sham Street in area of West Bay. Doha, Qatar, April 11, 2014
 Appalachian Trail on a ridge of Kittatinny Mountains. Delaware Water Gap, New Jersey, May 12, 2007
 Mycetinis mushrooms growing from a fallen oak leaf on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville, Texas, April 22, 2018
 Dry leaf of horse-apple in Bee Creek Park. College Station, Texas, January 7, 2018
 Rose pogonia orchid (Pogonia ophioglossoides) blooming near yellow trumpet-like leaf of pitcher plant (Sarracenia alata) in Big Thicket park on Sundew Trail. Texas, April 25, 2009
 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
 Forest on Ridge Trail near Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 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
 Close-up of teleutosori of rust fungus Allodus podophylli (Puccinia podophylli) on underside of a leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 10, 2021
 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
 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
 Underside of a leaf of May apple (Podophyllum peltatum) with brown 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 10, 2021
 Brown teleutospores of mayapple rust fungus Allodus podophylli (Puccinia podophylli) on underside of a leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, April 10, 2021
 Dogwood in a forest on Ridge Trail east Trailpoint 13 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 Underside of a leaf of May apple (mandrake, Podophyllum peltatum) with brown teleutospores 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 23, 2022
 Leaf of rose in dew in Antique Rose Emporium. Independence, Texas, January 26, 2013
 Nodding waxy flower of May apple (mandrake, Podophyllum peltatum) in Delaware and Raritan Canal State Park, near Washington Road bridge. Princeton, New Jersey, May 3, 2007
 Young leaf of May apple (Podophyllum peltatum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 1, 2019
 Leaf parachute mushrooms (Marasmius epiphyllus) on a maple leaf taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Showy Orchis (Galearis spectabilis) orchid wildflower on Ridge Trail above Trailpoint 1 in Sourland Mountain Preserve. Somerset County, New Jersey, May 6, 2007
 Young leaves of Oak Leaf Hydrangea Ellen Huff in Antique Rose Emporium. Independence, Texas, April 13, 2023
 Leaf parachute mushrooms (Marasmius epiphyllus) on a rotten leaf of birch taken from Sosnovka Park. Saint Petersburg, Russia, October 31, 2016
 Leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 25, 2023
 Leaf of May apple (Podophyllum peltatum) in Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 20, 2022
 Young leaf of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 9, 2020
 Leaf venation of May apple (Podophyllum peltatum) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, February 9, 2020
 Fire road on the top of Mount Tammany. Delaware Water Gap, New Jersey, March 31, 2007
 View of Sandy Hook Bay and Sandy Hook from Mount Mitchill Scenic Overlook. Atlantic Highlands, New Jersey, April 22, 2007
 Tiny Gymnopus mushrooms growing on a dry oak leaf in Hensel Park. College Station, Texas, December 9, 2017
 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
 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
 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
 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
 Aeciospores of rust fungus Puccinia podophylli from a May apple leaf under a microscope, collected from Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 10, 2022
 Leaf texture of an icy leaf of curly dock near the creek in Bee Creek Park. College Station, Texas, January 4, 2022
 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
 Ladybug on a leaf of Sodom Apple (Calotropis procera) in Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, March 5, 2013
 Aeciospores of rust fungus Puccinia podophylli from a May apple leaf under a microscope at higher magnification, collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, March 10, 2022
 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
 Brown leaf of mustang grape and yellow leaf of muscadine grape on the ground after recent rains in Lick Creek Park. College Station, Texas, August 19, 2022
 Two ladybugs on a leaf of Sodom Apple (Calotropis procera) near stone fence of Dar Al Salam Compound, Abu Hamour area. Doha, Qatar, March 26, 2013
 Underside of a leaf of May apple (Podophyllum peltatum) with aecia 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, March 16, 2019
 Leaf of of May apple (Podophyllum peltatum) with aecia 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, March 10, 2022
 Underside of a leaf of May apple (mandrake, Podophyllum peltatum) with brown teleutospores 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
 Underside of a leaf of May apple (Podophyllum peltatum) with aecia 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, March 4, 2023
 Underside of a leaf of May apple (Podophyllum peltatum) with aecia 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, March 10, 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
 A boat in a forest near a trail of Delaware and Raritan Canal State Park north from Kingston. New Jersey, April 19, 2007
 A snake on a trail south from Mountain Lakes in John Witherspoon Woods park. Princeton, New Jersey, April 28, 2007
 Irregular, wart-like light green to reddish-green bladder galls on leaf surfaces of poison ivy produced by leaf gall mite Aculops toxicophagus in Bee Creek Park. College Station, Texas, June 10, 2019
 Vein-bordered yellow areas on the leaf of May apple (mandrake, Podophyllum peltatum) with teleutosori 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
 View of Delaware River and highways 80 and 311 from Mount Tammany. Delaware Water Gap, New Jersey, March 31, 2007
 Tiny bright orange cups on aecia 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
 Leaf venation in Antique Rose Emporium. Independence, Texas, May 13, 2012
 Drummond s beeblossom (Oenothera xenogaura, Gaura drummondii) with purple leaf spots developed under cool growing conditions in Bee Creek Park. College Station, Texas, March 23, 2021
 Tiny bright orange cups on aecia 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 north from Montgomery. Texas, March 4, 2023
 Leaf footed bug on a leaf in Washington-on-the-Brazos State Historic Site. Washington, Texas, July 27, 2013
 A canada goose on eggs near a trail near Carnegie Lake in Delaware and Raritan Canal State Park. Kingston, New Jersey, April 18, 2007
 Flooding of a trail in Delaware and Raritan Canal State Park, view from Road 27 crossing to the north. Kingston, New Jersey, April 16, 2007
 Leaf venation in Antique Rose Emporium. Independence, Texas, August 6, 2011
 Leaf venation in Antique Rose Emporium. Independence, Texas, July 27, 2013
 Leaf of castor beans in Antique Rose Emporium. Independence, Texas, May 13, 2012
 Grape leaf in Antique Rose Emporium. Independence, Texas, October 12, 2013
 Venation of a green leaf in Antique Rose Emporium. Independence, Texas, May 16, 2020
 Rapidly growing vegetative shoot of prickly pear cactus (opuntia) with glossy wax coating and fresh areolas bearing leaf primordia, spines and tufts of glochids in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, April 1, 2009
 Canada goose nest with eggs on a trail near Carnegie Lake in Delaware and Raritan Canal State Park. Kingston, New Jersey, April 18, 2007
 A canada goose (zoomed) nesting on a trail near Carnegie Lake in Delaware and Raritan Canal State Park. Kingston, New Jersey, April 18, 2007
 Shoot of Drummond s beeblossom (Oenothera xenogaura, Gaura drummondii) with purple leaf spots developed under cool growing conditions in Wolf Pen Creek Park. College Station, Texas, March 24, 2019
 Purple leaf spots on foliage of Drummond s beeblossom (Oenothera xenogaura, Gaura drummondii) developed under cool growing conditions in Wolf Pen Creek Park. College Station, Texas, March 24, 2019
 Leaf-footed bug (Coreidae) Leptoglossus zonatus on a thorn apple (datura fruit) in TAMU Horticultural Gardens in Texas A and M University. College Station, Texas, October 18, 2008
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