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Texture of water fern (Azolla) and duckweed both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Bee Creek Park. College Station, Texas, November 11, 2024

Water fern (Azolla) and duckweed both in natural light and under 365 nm ultraviolet (UV-A) blacklight taken from a pond in Bee Creek Park. College Station, Texas, November 11, 2024

Close-up of water fern (Azolla) and duckweed both in natural light and under 365 nm ultraviolet (UV-A) blacklight from a pond in Bee Creek Park. College Station, Texas, November 12, 2024

Close-up of water fern (Azolla) and duckweed both in natural light and under 365 nm ultraviolet (UV-A) blacklight from a pond in Bee Creek Park. College Station, Texas, November 12, 2024

Green carpet of water fern (Azolla) and duckweed both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Bee Creek Park. College Station, Texas, November 11, 2024

Water fern (Azolla) and duckweed when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Bee Creek Park. College Station, Texas, November 11, 2024

Close-up of water fern (Azolla) and duckweed when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Bee Creek Park. College Station, Texas, November 11, 2024

Texture of water fern (Azolla) and duckweed when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from a pond in Bee Creek Park. College Station, Texas, November 12, 2024

Carpet of water fern (Azolla) and duckweed when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from a pond in Bee Creek Park. College Station, Texas, November 12, 2024

Water fern (Azolla) and duckweed in a pond in Bee Creek Park near Texas Avenue. College Station, Texas, November 11, 2024

Water fern (Azolla) and duckweed at sunrise in a pond in Bee Creek Park near Texas Avenue. College Station, Texas, November 11, 2024

Close-up of water fern (Azolla) and duckweed in a pond in Bee Creek Park near Texas Avenue. College Station, Texas, November 11, 2024

Plant with red fluorescence in ultraviolet light in Lick Creek Park. College Station, Texas, October 7, 2024

Crustose lichens on bark of a fallen water oak in ultraviolet light on Racoon Run Trail in Lick Creek Park. College Station, Texas, November 15, 2024

Duckweed and red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Red water fern (Azolla filiculoides) together with duckweed on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Red water fern (Azolla filiculoides) overgrowing duckweed on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Orange-striped ribbonsnake on a carpet of red water fern (Azolla filiculoides) and duckweed on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Round patches of crustose lichen with bright orange fluorescence on a granite tomb both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Odd Fellow Cemetery. Anderson, Texas, November 9, 2024

Fluorescence of olive edge bonnet mushrooms (Mycena viridimarginata) under ultraviolet light, collected in Sosnovka Park. Saint Petersburg, Russia, August 6, 2024

Fluorescence of gills of olive edge bonnet mushrooms (Mycena viridimarginata) under ultraviolet light, collected in Sosnovka Park. Saint Petersburg, Russia, August 6, 2024

Blue fluorescence of gills of warty cavalier mushrooms (Melanoleuca verrucipes) under ultraviolet light, collected in Sosnovka Park. Saint Petersburg, Russia, August 6, 2024

Water primrose (Ludwigia) with flower buds both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024

Yellow-green fluorescence of gills of sulphur tuft mushrooms (Hypholoma fasciculare) under ultraviolet light, collected in Sosnovka Park. Saint Petersburg, Russia, August 6, 2024

Gills of common bonnet mushrooms (Mycena galericulata) showing blue fluorescence under ultraviolet light near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024

Sandstone with green algae on a path in ultraviolet light in Lick Creek Park. College Station, Texas, November 8, 2024

Dry leaves and sandstone with algae on a path in ultraviolet light in Lick Creek Park. College Station, Texas, November 8, 2024

Dry oak and hackberry leaves and sandstone with algae on a path in ultraviolet light in Lick Creek Park. College Station, Texas, November 8, 2024

Dry oak leaves, fallen twigs and sandstone with algae on a path in ultraviolet light in Lick Creek Park. College Station, Texas, November 8, 2024

Sparse-lobed grape fern (Botrychium biternatum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight taken from Lick Creek Park. College Station, Texas, November 6, 2024

Velvet panicum grass (Dichanthelium scoparium)(?) in ultraviolet light on Racoon Run Trail in Lick Creek Park. College Station, Texas, November 15, 2024

Leaves of bull thistle (Cirsium horridulum) in ultraviolet light on a sewage line right of way in Lick Creek Park. College Station, Texas, November 15, 2024

Sporangia of sparse-lobed grape fern (Botrychium biternatum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight taken from Lick Creek Park. College Station, Texas, November 6, 2024

Shallow water of Flag Pond covered by red water fern (Azolla) on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

Crustose lichens on bark of hackberry in ultraviolet light in Lemontree Park. College Station, Texas, November 5, 2024

Rosette of basal leaves of bull thistle (Cirsium horridulum) in ultraviolet light on a sewage line right of way in Lick Creek Park. College Station, Texas, November 15, 2024

Shoot of water-primrose (Ludwigia) and red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Shoot of water-primrose (Ludwigia) and red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Blue and orange fluorescent lichens on bark of hackberry in ultraviolet light in Lemontree Park. College Station, Texas, November 5, 2024

Close-up of blue and orange fluorescent lichens on bark of hackberry in ultraviolet light in Lemontree Park. College Station, Texas, November 5, 2024

Azolla water fern on muddy edge of Lake Conroe near Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, November 24, 2021

Crustose lichen with bright orange fluorescence on a granite tomb when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in Odd Fellow Cemetery. Anderson, Texas, November 9, 2024

Purple bindweed (Ipomoea cordatotriloba) in ultraviolet light in Bee Creek Park. College Station, Texas, October 14, 2024

Fallen horse apple (Maclura) in ultraviolet light in Bee Creek Park. College Station, Texas, October 29, 2024

Some sedge(?) glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, September 11, 2024

Mushrooms Amanita pubescens in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Various crustose lichen on a trunk of oak tree in ultraviolet light in Bee Creek Park. College Station, Texas, August 19, 2024

Young toad glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, August 30, 2024

Red brittlegill (Russula) mushroom in near ultraviolet light, collected in Lick Creek Park. College Station, Texas, January 29, 2024

Sandy path with elm leaves and algae in ultraviolet light in Lick Creek Park. College Station, Texas, September 25, 2024

Cap of a mushroom Amanita pubescens glowing in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Shoot of grass glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, August 30, 2024

Creeping grass glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, August 30, 2024

Inflorescence of Bradford pea both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Wolf Pen Creek Park. College Station, Texas, October 9, 2024

Top view of mushrooms Leucocoprinus longistriatus in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Caps of mushrooms Leucocoprinus longistriatus in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Crustose lichens on an iron bridge in ultraviolet light in Lick Creek Park. College Station, Texas, August 27, 2024

Mat of red water fern (Azolla) taken from Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

Red water fern (Azolla filiculoides(?)) in Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

A toad on a sandy path glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, August 30, 2024

Apothecia of a foliose lichen glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, August 30, 2024

Mushrooms Amanita pubescens on a sandy path in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Golden reishi mushroom (Ganoderma curtisii) in ultraviolet light in Lick Creek Park. College Station, Texas, October 16, 2024

Flower of powderpuff (Mimosa strigillosa) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Bee Creek Park. College Station, Texas, September 23, 2024

Flowers and fruits of Lantana camara both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Bee Creek Park. College Station, Texas, October 15, 2024

Mushrooms Leucocoprinus longistriatus on a sandy path in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Gills of red brittlegill (Russula) mushroom in near ultraviolet light, collected in Lick Creek Park. College Station, Texas, January 29, 2024

Spider lily (Hymenocallis) near Nature Center under ultraviolet light in Lick Creek Park. College Station, Texas, September 9, 2024

Wooden fence of a small foot bridge in ultraviolet light in Lick Creek Park. College Station, Texas, October 6, 2024

Rock rose (Pavonia) in ultraviolet light behind Nature Center in Lick Creek Park. College Station, Texas, October 6, 2024

Ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 7, 2024

Leaf of a thistle (Cirsium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 22, 2024

Red water fern (Azolla) and other aquatic plants in Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

Tiny leaves of red water fern (Azolla) taken from Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

Texture of red water fern (Azolla filiculoides(?)) in Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

Close-up of red water fern (Azolla filiculoides(?)) in Flag Pond on Lake Somerville Trailway near Nails Creek Unit of Somerville Lake State Park. Texas, September 12, 2021

Close-up of red water fern (Azolla filiculoides) on shores of Flag Pond at Lake Somerville Trailway, near Nails Creek Unit of Somerville Lake State Park. Texas, March 8, 2023

Purple gerardia (Agalinis purpurea) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024

Close-up of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 8, 2024

Mushrooms Amanita pubescens on a sandy path glowing in ultraviolet light in Lick Creek Park. College Station, Texas, September 5, 2024

Sidewalk firedot lichen (Xanthocarpia feracissima) on a concrete path in ultraviolet light in Bee Creek Park. College Station, Texas, October 15, 2024

Old cluster of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 8, 2024

Golden reishi mushroom (Ganoderma curtisii) near a stump in ultraviolet light in Lick Creek Park. College Station, Texas, October 23, 2024

Tree trunk with white crust fungus Dendrothele candida(?) in ultraviolet light in Bee Creek Park. College Station, Texas, October 29, 2024

Sidewalk firedot lichen (Xanthocarpia feracissima) in ultraviolet light on a concrete path in Bee Creek Park. College Station, Texas, August 19, 2024

Blooming dog fennel (Eupatorium capillifolium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 13, 2024

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

Crustose lichens in ultraviolet light on a small mesquite tree on Post Oak Trail in Lick Creek Park. College Station, Texas, August 23, 2024

Glowing gills of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 8, 2024

Details of caps of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 8, 2024

Fallen horse apple (osage orange, Maclura) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Bee Creek Park. College Station, Texas, October 4, 2024

Gills of a cluster of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 8, 2024

Close-up of narrowleaf marsh elder (Iva angustifolia) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024

Salt-marsh fleabane (Pluchea odorata) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024

Lichens at the base of a swamp cypress in ultraviolet light at a parking on Dartmouth Street in Wolf Pen Creek Park. College Station, Texas, October 9, 2024

Glowing caps of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 8, 2024

Upper section of a wooden fence of a small foot bridge in ultraviolet light in Lick Creek Park. College Station, Texas, October 6, 2024

Glowing gills of ringless honey mushrooms (Desarmillaria caespitosa) in ultraviolet light in Lick Creek Park. College Station, Texas, October 7, 2024

Blooming bastard pennyroyal (Trichostema dichotomum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, October 1, 2024