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Emerald Swallowtail (Papilio Palinurus) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Gills of Polyporus arcularius (Lentinus arcularius) mushroom on Kiwanis Nature Trail. College Station, Texas, February 19, 2018
Rice Paper Butterfly (Idea leuconoe) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Cap of Polyporus arcularius (Lentinus arcularius) mushroom on Kiwanis Nature Trail. College Station, Texas, February 19, 2018
Spotted clovel leaves on a field in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, December 13, 2017
Corticioid polypore mushroom Perenniporia tenuis(?) spreading on a log on Kiwanis Nature Trail. College Station, Texas, February 19, 2018
Young dung-loving bird s nest mushrooms (Cyathus stercoreus) on wood chips under oaks in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, May 22, 2018
Twisted deceiver mushrooms (Laccaria tortilis) in a dried marshy site in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
Velvet tooth mushrooms (Hydnellum spongiosipes(?)) under oaks in Little Thicket Nature Sanctuary. Cleveland, Texas, November 3, 2018
Gills of inkcap mushroom Coprinus laniger on Kiwanis Nature Trail. College Station, Texas, April 13, 2020
Close-up of false dandelion (Pyrrhopappus carolinianus) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 24, 2020
Plates of Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula. Qatar, December 5, 2014
Arabic calligraphy on a natural leaf (gold) in Museum of Islamic Art. Doha, Qatar, March 6, 2013
Red Peacock Butterfly (Anartia amathea) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula, view from east. Qatar, December 5, 2014
Some fleshy fibrecap (Inocybe) mushrooms under linden trees in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
Golden moonglow lichen (Dimelaena oreina, greenish grey) with some black granular lichen in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Sitting green frog in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
Red foliage of maple trees in Lost Maples State Natural Area, on East Trail. Vanderpool, Texas, November 7, 2008
Heathcote Farm (1857, a former State juvenile detention center, now Withington Estate) in Cook Natural Area. Kingston, New Jersey, May 11, 2007
Close-up of Emerald Swallowtail (Papilio Palinurus) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Blue Wave Butterfly (Myscelia cyaniris) with bands of iridescent blue across the upper wing surface in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Arabic calligraphy on a natural leaf (Turkey, 20th century, gold) on display in Museum of Islamic Art. Doha, Qatar, February 27, 2010
Details of jelly rot fungus (Merulius tremellosus, Phlebia tremellosa) on Kiwanis Nature Trail. College Station, Texas, November 12, 2017
Buzzard s Roost from the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula at sunset. Qatar, December 5, 2014
Arabic calligraphy on a natural leaf (Turkey, 20th century, gold) in Museum of Islamic Art. Doha, Qatar, March 6, 2013
Sabinal River in Lost Maples State Natural Area, near parking. Vanderpool, Texas, November 7, 2008
Black and red striped butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
Group of birdwatchers from QNHG (Qatar Natural History Group) looking for a white owl near Green Circles (center-pivot irrigation) in Irkhaya Farms. South-western Qatar, March 29, 2014
Ethiopian hedgehog (Paraechinus aethiopicus) on a gardening glove at a short presentation of Qatar University for Qatar Natural History Group (QNHG) at the entrance of Rawdat Al Faras Research Station (RAFRS) near Al Zubara Road. Qatar, May 29, 2015
Polypore mushroom on a stump on Kiwanis Nature Trail. College Station, Texas, December 7, 2017
Pores of turkeytail (Trametes versicolor) mushrooms on Kiwanis Nature Trail. College Station, Texas, December 13, 2017
Felt saddle mushroom (Helvella macropus) collected by people at mushroom walk of Gulf States Mycological Society. Little Thicket Nature Sanctuary, Cleveland, Texas, November 3, 2018
Pigtail moss (Weissia controversa) in a shady place in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
A deer on Linear Park Trail (former railroad) in Cook Natural Area, near Ridge Road. Kingston, New Jersey, May 11, 2007
Ponds of Can Creek from western section of East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Black and red butterfly on a leaf in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Serpentine path of "Natural entrance" to Carlsbad Caverns. New Mexico, December 26, 2007
Black and red striped butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
- Central Park and Museum of Natural History (New York, June 23 - 24 and a trip to Turner Falls, May 28, 1997)
Owl Butterfly (Caligo) with dramatic eyespots on the underside of the lower wing in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Green frog in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula. Qatar, December 5, 2014
Rocks, a pond and a foot bridge of Maple Trail, view from East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Foliage on western section of East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
- Central Park and Museum of Natural History (New York, June 23 - 24 and a trip to Turner Falls, May 28, 1997)
Close up of Phlebia subochracea corticioid fungus on Kiwanis Nature Trail. College Station, Texas, December 1, 2017
Fuscoporia gilva (Phellinus gilvus)(?) mushrooms on a log on Kiwanis Nature Trail. College Station, Texas, December 1, 2017
Xylaria mushrooms on a wet log near a creek on Kiwanis Nature Trail. College Station, Texas, December 10, 2017
Some poroid crust mushroom on rotten wood in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, December 13, 2017
Deer shield mushrooms (Pluteus cervinus) on Kiwanis Nature Trail. College Station, Texas, February 19, 2018
Scotch bonnet mushrooms (Marasmius oreades) on roadside in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018
Hairawn muhly grass (Muhlenbergia capillaris) behind Nature Center in Lick Creek Park. College Station, Texas, October 12, 2018
Bearded Tooth Mushroom (Hericium erinaceus) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, October 31, 2018
Milkcap mushroom Lactifluus petersenii (Lactarius petersenii) in Little Thicket Nature Sanctuary. Found at mushroom walk of GSMS. Cleveland, Texas, November 3, 2018
Group of freckled dapperling mushrooms (Echinoderma asperum) under oaks in Little Thicket Nature Sanctuary. Found at mushroom walk of GSMS. Cleveland, Texas, November 3, 2018
Leather lichen Dermatocarpon luridum and yellow stonecrop (Sedum nuttallianum) in a wet spot in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Buzzard s Roost from Enchanted Rock in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Flower spike of toad flax (Linaria texana) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 3, 2019
Brittlegill mushrooms Russula pectinatoides on mulch under live oaks in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, July 3, 2019
Caps of Pluteus thomsonii mushrooms on an oak log on Kiwanis Nature Trail. College Station, Texas, April 13, 2020
Tiny black dots of Ascomycota fungus on a fallen stem of giant cane (Arundinaria gigantea) on Kiwanis Nature Trail. College Station, Texas, April 29, 2020
Pond with rocks in Lost Maples State Natural Area, on East Trail. Vanderpool, Texas, November 7, 2008
Ponds of Can Creek from an overlook of East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Flying Dutchman butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Members of the Qatar Natural History Group (QNHG) under the guidance of a geologist Jacques LeBlanc exploring fossilised stromatolites (microbial mats) during fossil trip in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Pink brittlegill mushrooms Russula pulchra(?) with red-tinted stems in Little Thicket Nature Sanctuary. Found at mushroom walk of GSMS. Cleveland, Texas, November 3, 2018
Mexican yolk lichen (Candelina submexicana) together with granite rosette lichen (Physcia halei) at the edge of a granite stone in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Exfoliation of granite slabs from the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
The dome of Enchanted Rock from Moss Lake. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
View of the granite dome from Echo Canyon. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
East Trail on a grassy terrace in Lost Maples State Natural Area, close to parking. Vanderpool, Texas, November 8, 2008
Speckled butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
A stone bridge across Heathcote Brook in Cook Natural Area at sunset. Kingston, New Jersey, April 2, 2007
Qatar Natural History Group outing on limestone hills of Harrarah, 40 miles south-west from Doha. Qatar, March 5, 2010
Bunch of ringless honey mushrooms (Desarmillaria tabescens, Armillaria tabescens) on Kiwanis Nature Trail. College Station, Texas, November 17, 2017
- Central Park and Museum of Natural History (New York, June 23 - 24 and a trip to Turner Falls, May 28, 1997)
"Natural entrance" to Carlsbad Caverns. New Mexico, December 26, 2007
Nature Juice Stall in area of Al Mijdaf Street. Doha, Qatar, March 26, 2011
Branched blazing star (Aggie-land gayfeather, Liatris cymosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, July 12, 2013
Close-up of Dryadula Phaetusa(?) butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Sitting butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Cypress forest at Bayou L Ourse Nature Trail near Road 662, Morgan City, Assumption Parish. Louisiana, March 25, 2006
Group of bird watchers from QNHG (Qatar Natural History Group) on Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, March 5, 2016
Blue-edged scale lichen (Psorula rufonigra) (olivaceous) on a filamentous cyanolichen Spilonema revertens (black) in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Rock-shield lichen Xanthoparmelia in shaded place in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
A marsh boardwalk in Cook Natural Area. Princeton, New Jersey, March 23, 2007
A marsh in Cook Natural Area at sunset. Kingston, New Jersey, April 2, 2007
Black and orange butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Hillside view west from East Trail in Lost Maples State Natural Area, close to parking. Vanderpool, Texas, November 8, 2008
- Central Park and Museum of Natural History (New York, June 23 - 24 and a trip to Turner Falls, May 28, 1997)
Reddish maple leaves in Lost Maples State Natural Area, on East Trail. Vanderpool, Texas, November 7, 2008
Close-up of Red Peacock Butterfly (Anartia amathea) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Gymnopus spongiosus mushrooms with oak leaves on Kiwanis Nature Trail. College Station, Texas, December 20, 2017
Western section of East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Close-up of a black and red butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
A cave in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Stones and trees in Lost Maples State Natural Area, on East Trail. Vanderpool, Texas, November 7, 2008
Bigtooth maple in Lost Maples State Natural Area, near parking. Vanderpool, Texas, November 7, 2008
Rock shelters of Hale Hollow Creek East Trail in Lost Maples State Natural Area, at evening. Vanderpool, Texas, November 8, 2008
Richard Serra s sculpture, East-West/West-East in desert of Brouq Nature Reserve on Ras Abrouq Peninsula. Qatar, December 5, 2014
Spacious hall in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Nature photographer Therese Tusa taking macro photos of wildflowers in Old Baylor Park at morning. Independence, Texas, March 29, 2008
Group of birdwatchers from QNHG (Qatar Natural History Group) on a service road near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula, after sunset. Qatar, December 5, 2014
Coral tooth mushroom (Hericium coralloides) on Kiwanis Nature Trail. College Station, Texas, November 17, 2017
Polyporus arcularius (Lentinus arcularius) mushrooms on a twig on Kiwanis Nature Trail. College Station, Texas, February 19, 2018
View in direction of Enchanted Rock from the top of Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Rock shelters of Hale Hollow Creek near East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Scaly blazing star (gayfeather, Liatris squarrosa) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, July 9, 2014
Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula, view from west. Qatar, December 5, 2014
Spreading yellow tooth fungus Hydnophlebia chrysorhiza (Phanerochaete chrysorhiza) growing on wet deadwood in shaded area on Kiwanis Nature Trail. College Station, Texas, December 1, 2017
Gills of Bear Lentinellus mushrooms (Lentinellus ursinus) on Kiwanis Nature Trail. College Station, Texas, December 7, 2017
Light brown crust fungus on rotting bamboo on Kiwanis Nature Trail. College Station, Texas, December 7, 2017
Brain puffball mushroom (Calvatia craniiformis) on Kiwanis Nature Trail. College Station, Texas, December 25, 2017
Jelly fungus Exidia glandulosa(?) on Kiwanis Nature Trail. College Station, Texas, March 1, 2018
Underside of tropical white polypore mushrooms (Favolus tenuiculus, Favolus brasiliensis) on Kiwanis Nature Trail. College Station, Texas, May 9, 2018
Bushy bluestem (Andropogon glomeratus) in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 26, 2018
Coral tooth mushroom (Hericium coralloides) on Kiwanis Nature Trail. College Station, Texas, October 31, 2018
Gills of milkcap mushrooms Lactarius paradoxus on a forest road in Little Thicket Nature Sanctuary. Found at mushroom walk of GSMS. Cleveland, Texas, November 3, 2018
Gills of a mushroom Cyptotrama chrysopepla in Little Thicket Nature Sanctuary. Cleveland, Texas, November 3, 2018
Small yellow mushroom Cyptotrama chrysopepla in Little Thicket Nature Sanctuary. Cleveland, Texas, November 3, 2018
Leather lichen Dermatocarpon luridum on dark brown water lichen Pyrenopsis in water seepage area on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Cracked lichen Acarospora novomexicana (yellow) and firedot lichen Caloplaca appressa(?) (red) on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Pleated shield mushrooms (Pluteus longistriatus) on mulch on mulch at native plant display behind Nature Center in Lick Creek Park. College Station, Texas, March 11, 2019
Stalactites in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Water stream of Can Creek from West Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Back-lit trees on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Butterfly on a flower of tropical milkweed in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Orange butterfly Dryadula Phaetusa(?) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Group of wood blewit mushrooms (Clitocybe nuda, Lepista nuda) on Kiwanis Nature Trail. College Station, Texas, December 29, 2017
Hall of the Mountain King(?) in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Fall foliage of bigtooth maple on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Caterpillar on a leaf in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Small butterfly in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
Watching birds with QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
People from QNHG (Qatar Natural History Group) taking pictures of a lizard on periphery of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, March 5, 2016
Sphaerosporium lignatile mushrooms on a rotten oak near a creek on Kiwanis Nature Trail. College Station, Texas, February 19, 2018
Golden jelly fungus (Tremella mesenterica) on a tree near a creek in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, February 25, 2018
Exfoliation of slope of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Stalagmites in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Maples near East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Cypresses at Bayou L Ourse Nature Trail near Road 662, Morgan City, Assumption Parish. Louisiana, March 25, 2006
Pedestal rock (differential weathering) near Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
The King s Throne in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Rocks east from Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
Blue flower of Lignum Vitae (Gaiac tree, Guaiacum sanctum) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
View of Bedouin Rahat city from hills of North Lahav Nature Reserve, 4 miles north from Beer-Sheva. The Middle East, December 16, 2000
The Watchtower in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Pluto s Anteroom(?) in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Mushroom rocks (differential weathering of shaded sides of rocks) in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
Ball moss (Tillandsia recurvata) in tangled balls around a tree branch in Lost Maples State Natural Area, on East Trail. Vanderpool, Texas, November 7, 2008
Erosion of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
A boardwalk in Cook Natural Area through a marsh in fog. Princeton, New Jersey, March 23, 2007
Steel plates Richard Serra s sculpture, East-West/West-East on chalky plateau of Brouq Nature Reserve on Ras Abrouq Peninsula. Qatar, December 5, 2014
Red foliage of bigtooth maple on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Orange moth on display in Houston Museum of Natural Science. Houston, Texas, January 22, 2011
Group of bird watchers from QNHG (Qatar Natural History Group) near a pond outside of Green Circles (center-pivot irrigation) in Irkhaya (Irkaya) Farms. South-western Qatar, March 5, 2016
Close up of jelly rot fungus (Merulius tremellosus, Phlebia tremellosa) on Kiwanis Nature Trail. College Station, Texas, November 12, 2017
Jill o Lanterns (Omphalotus subilludens) mushrooms on Kiwanis Nature Trail. College Station, Texas, November 12, 2017
Coral tooth mushroom (comb tooth, Hericium coralloides) on a fallen oak on Kiwanis Nature Trail. College Station, Texas, November 12, 2017
Coral tooth mushroom (Hericium coralloides) on a log on Kiwanis Nature Trail. College Station, Texas, November 17, 2017
Phlebia subochracea crust fungus on Kiwanis Nature Trail. College Station, Texas, December 1, 2017
Poroid crust fungus on an oak branch in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, December 13, 2017
Some brown tooth fungus (Hydnaceae) on Kiwanis Nature Trail. College Station, Texas, January 14, 2018
Mushrooms Sphaerosporium lignatile on a rotten oak log near a creek on Kiwanis Nature Trail. College Station, Texas, March 1, 2018
Green alga Trentepohlia with orange carotenoid pigments on a fallen oak branch on Kiwanis Nature Trail. College Station, Texas, March 1, 2018
Showy Evening Primrose (Oenothera speciosa) on a lawn in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, April 6, 2018
Saffron oysterling mushroom (Crepidotus crocophyllus) on Kiwanis Nature Trail. College Station, Texas, May 25, 2018
Firedot lichen Caloplaca brouardii(?) with isidia in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Rock-shield lichen Xanthoparmelia in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Lichens covering granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Orange firedot lichen Caloplaca appressa(?) on granite in Enchanted Rock State Natural Area. Fredericksburg, Texas, December 25, 2018
Slope of the dome of Enchanted Rock, view from Freshman Mountain. Enchanted Rock State Natural Area, Fredericksburg, Texas, December 25, 2018
Old suspension bridge over a tributary of Lampasas River at the head of Stillhouse Hollow Nature Trail in Chalk Ridge Falls Park. Belton - Killeen, Texas, August 17, 2008
Rocks and Can Creek from western section of East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Prickly pears cactus on East Trail in Lost Maples State Natural Area. Vanderpool, Texas, November 8, 2008
Butterfly on Pentas lanceolata (Penta starla) flowers in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Close-up of a feeding Owl Butterfly (Caligo) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Qatar Natural History Group wading at low tide in Arabian (Persian) Gulf near Mesaieed, north from Doha. Qatar, January 29, 2010
Masses of psychedelic mushrooms Psilocybe cubensis on mulch at native plant display behind a new Nature Center in Lick Creek Park. College Station, Texas, October 3, 2018
A boardwalk in Cook Natural Area in fog. Princeton, New Jersey, March 23, 2007
Stalagmites in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Sabinal River from East Trail in Lost Maples State Natural Area. Vanderpool, Texas, December 30, 2007
Owl Butterfly (Caligo) feeding on a rotten star fruit in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
Pink spotted swallowtail(?) in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, January 22, 2011
Group of birdwatchers from QNHG (Qatar Natural History Group) near Abu Nakhla wastewater treatment ponds. Doha, Qatar, March 29, 2014
QNHG (Qatar Natural History Group) exploring a bone on a beach of a small peninsula. Ruwais, Northern Qatar, April 3, 2015
Ringless honey mushrooms (Desarmillaria tabescens, Armillaria tabescens) on Kiwanis Nature Trail. College Station, Texas, November 17, 2017
A hall in Northern Cavern in Natural Bridge Caverns. San Antonio, Texas, October 6, 2007
Butterfly on pink Pentas lanceolata flowers in Cockrell Butterfly Center of Houston Museum of Natural Science. Houston, Texas, February 14, 2009
- Central Park and Museum of Natural History (New York, June 23 - 24 and a trip to Turner Falls, May 28, 1997)
Negev Desert near N. Lahav Nature Reserve, 4 miles north from Beer-Sheva. The Middle East, December 16, 2000
Weathering of rocks near Turkey Pass Trail in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
View to the north from Enchanted Rock in Enchanted Rock State Natural Area. Fredericksburg, Texas, October 27, 2007
Qatar Natural History Group measuring depth of a pond between Al Wakra and Mesaieed, north from Doha. Qatar, January 29, 2010
Members of the Qatar Natural History Group (QNHG) exploring area of gypsum crystal pavement (selenite) during fossil trip in area of Jebel Al-Nakhsh in south-western Qatar, February 7, 2014
Fuscoporia gilva (Phellinus gilvus)(?) mushrooms on a log in bamboo forest on Kiwanis Nature Trail. College Station, Texas, November 12, 2017
Cluster of young Jill o Lanterns mushrooms (Omphalotus subilludens) on a stump on Kiwanis Nature Trail. College Station, Texas, November 22, 2017

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