![](../../pictures/archives/compress/2024/3623/jpeg/14t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/02t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Greenway Trail. College Station, Texas, September 19, 2024
![](../../pictures/archives/compress/2009/794/jpeg/10t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
![](../../pictures/archives/compress/2009/794/jpeg/09t.jpg) Back lit St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, September 26, 2009
![](../../pictures/archives/compress/2020/2743/jpeg/22t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020
![](../../pictures/archives/compress/2020/2738/jpeg/20t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
![](../../pictures/archives/compress/2022/3194/jpeg/04t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) on Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 2022
![](../../pictures/archives/compress/2020/2738/jpeg/26t.jpg) Blooming st. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020
![](../../pictures/archives/compress/2008/659/jpeg/23t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) flower on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, July 20, 2008
![](../../pictures/archives/compress/2024/3621/jpeg/23t.jpg) St. Andrew cross (Hypericum hypericoides) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight collected on Stubblefield section of Lone Star hiking trail in Sam Houston National Forest. Texas, September 15, 2024
![](../../pictures/archives/compress/2008/670/jpeg/08t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Little Lake Creek Loop Trail in Sam Houston National Forest. Huntsville, Texas, September 14, 2008
![](../../pictures/archives/compress/2019/2559/jpeg/12t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019
![](../../pictures/archives/compress/2024/3615/jpeg/14t.jpg) Cross section of a bolete mushroom both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2019/2555/jpeg/09t.jpg) Flowers of St. Andrew cross (Ascyrum hypericoides, Hypericum) in Lick Creek Park. College Station, Texas, July 21, 2019
![](../../pictures/archives/compress/2014/1464/jpeg/03t.jpg) Flowers of St. Andrew cross (Hypericum, Ascyrum hypericoides) in Lake Bryan Park. Bryan, Texas, July 20, 2014
![](../../pictures/archives/compress/2024/3615/jpeg/17t.jpg) Cap of a brittlegill (Russula) mushroom both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2012/1104/jpeg/23t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) in Bastrop State Park. Bastrop, Texas, September 15, 2012
![](../../pictures/archives/compress/2024/3615/jpeg/18t.jpg) Section of a brittlegill (Russula) mushroom both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2024/3615/jpeg/16t.jpg) Underside of a brittlegill (Russula) mushroom both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2024/3615/jpeg/12t.jpg) Violet wood sorrel (Oxalis violacea) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2024/3615/jpeg/13t.jpg) Shoots of loblolly pine (Pinus taeda) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2024/3615/jpeg/11t.jpg) Blooming mountain mint (Pycnanthemum tenuifolium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2021/2999/jpeg/26t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) in Lick Creek Park. College Station, Texas, August 4, 2021
![](../../pictures/archives/compress/2014/1464/jpeg/23t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, July 22, 2014
![](../../pictures/archives/compress/2021/2997/jpeg/09t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2014/1465/jpeg/01t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) in Lick Creek Park. College Station, Texas, July 22, 2014
![](../../pictures/archives/compress/2008/639/jpeg/09t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, May 3, 2008
![](../../pictures/archives/compress/2019/2555/jpeg/07t.jpg) St. Andrew cross (Ascyrum hypericoides, Hypericum) in Lick Creek Park. College Station, Texas, July 21, 2019
![](../../pictures/archives/compress/2014/1467/jpeg/02t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, July 26, 2014
![](../../pictures/archives/compress/2024/3615/jpeg/09t.jpg) Elegant gayfeather (pinkscale, Liatris hesperelegans, former L. elegans) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2014/1467/jpeg/04t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, July 26, 2014
![](../../pictures/archives/compress/2012/1076/jpeg/07t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, July 7, 2012
![](../../pictures/archives/compress/2012/1101/jpeg/12t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, August 31, 2012
![](../../pictures/archives/compress/2021/2997/jpeg/37t.jpg) Blooming St. Andrew cross (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, August 1, 2021
![](../../pictures/archives/compress/2013/1232/jpeg/02t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lick Creek Park. College Station, Texas, July 24, 2013
![](../../pictures/archives/compress/2014/1469/jpeg/03t.jpg) St. Andrew cross (Hypericum, Ascyrum hypericoides) in Lake Bryan Park. Bryan, Texas, July 31, 2014
![](../../pictures/archives/compress/2014/1464/jpeg/02t.jpg) St. Andrew cross flower (Hypericum, Ascyrum hypericoides) in Lake Bryan Park. Bryan, Texas, July 20, 2014
![](../../pictures/archives/compress/2024/3621/jpeg/15t.jpg) Flowers of Virgin s Bower (Clematis virginiana) both in natural light and under 365 nm ultraviolet (UV-A) blacklight collected on Stubblefield section of Lone Star hiking trail in Sam Houston National Forest. Texas, September 15, 2024
![](../../pictures/archives/compress/2024/3619/jpeg/24t.jpg) Caps of polypore mushrooms Ganoderma sessile both in natural light and under 365 nm ultraviolet (UV-A) blacklight collected on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, September 13, 2024
![](../../pictures/archives/compress/2024/3632/jpeg/22t.jpg) Soft green-eyes (Berlandiera pumila) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, October 19, 2024
![](../../pictures/archives/compress/2024/3630/jpeg/24t.jpg) White flowers of aster Symphyotrichum drummondii both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, October 10, 2024
![](../../pictures/archives/compress/2024/3621/jpeg/20t.jpg) Pineapple bolete mushroom (Boletellus ananas) both in natural light and under 365 nm ultraviolet (UV-A) blacklight collected on Stubblefield section of Lone Star hiking trail in Sam Houston National Forest. Texas, September 15, 2024
![](../../pictures/archives/compress/2024/3621/jpeg/16t.jpg) Inflorescence of Virgin s Bower (Clematis virginiana) both in natural light and under 365 nm ultraviolet (UV-A) blacklight collected on Stubblefield section of Lone Star hiking trail in Sam Houston National Forest. Texas, September 15, 2024
![](../../pictures/archives/compress/2024/3621/jpeg/25t.jpg) Fertile fronds of bead fern (Onoclea sensibilis) both in natural light and under 365 nm ultraviolet (UV-A) blacklight collected on Stubblefield section of Lone Star hiking trail in Sam Houston National Forest. Texas, September 15, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/17t.jpg) 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
![](../../pictures/archives/compress/2024/3622/jpeg/11t.jpg) Flowers of bastard pennyroyal (Trichostema dichotomum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 17, 2024
![](../../pictures/archives/compress/2024/3620/jpeg/14t.jpg) Flowers of cocklebur (Xanthium strumarium) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
![](../../pictures/archives/compress/2024/3624/jpeg/20t.jpg) Flowers of smartweed (Persicaria, Polygonum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
![](../../pictures/archives/compress/2024/3630/jpeg/22t.jpg) Basket grass (Oplismenus hirtellus) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, October 10, 2024
![](../../pictures/archives/compress/2024/3620/jpeg/17t.jpg) Flowers of stickleaf (blazing star) Mentzelia texana(?) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
![](../../pictures/archives/compress/2024/3622/jpeg/20t.jpg) Flowers of Maximilian sunflower (Helianthus maximiliani) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
![](../../pictures/archives/compress/2024/3630/jpeg/28t.jpg) Seeds of beefsteak plant (Perilla frutescens) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, October 10, 2024
![](../../pictures/archives/compress/2024/3622/jpeg/17t.jpg) Flowers of woolly croton (hogwort, Croton capitatus) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 17, 2024
![](../../pictures/archives/compress/2024/3633/jpeg/22t.jpg) White aster flowers when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
![](../../pictures/archives/compress/2024/3620/jpeg/20t.jpg) Flowers of woolly croton (hogwort, Croton capitatus) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
![](../../pictures/archives/compress/2024/3632/jpeg/05t.jpg) 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
![](../../pictures/archives/compress/2024/3624/jpeg/22t.jpg) Branching sprays of white flowers of wild buckwheat (Yerba colorado, Eriogonum annuum(?)) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
![](../../pictures/archives/compress/2024/3613/jpeg/21t.jpg) Cross section of a young Amanita mushroom when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 2, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/07t.jpg) Dissected dyeball mushroom (Pisolithus arhizus) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Greenway Trail. College Station, Texas, September 19, 2024
![](../../pictures/archives/compress/2024/3607/jpeg/26t.jpg) Green flowers of Zizotes milkweed (Asclepias oenotheroides) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024
![](../../pictures/archives/compress/2024/3607/jpeg/27t.jpg) Flowers of elegant gayfeather (pinkscale, Liatris hesperelegans, former L. elegans) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024
![](../../pictures/archives/compress/2024/3619/jpeg/07t.jpg) Close-up of fruit of pomegranate both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Kroger supermarket. College Station, Texas, September 12, 2024
![](../../pictures/archives/compress/2024/3619/jpeg/06t.jpg) Section of fruit of pomegranate both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Kroger supermarket. College Station, Texas, September 12, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/19t.jpg) Pencil flower (Stylosanthes biflora) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/17t.jpg) Wild petunia (Ruellia caroliniensis(?)) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/16t.jpg) Orange milkweed (Asclepias tuberosa) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/20t.jpg) Mountain mint (Pycnanthemum tenuifolium) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3625/jpeg/02t.jpg) 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
![](../../pictures/archives/compress/2024/3630/jpeg/30t.jpg) Fallen fruits of trifoliate orange (Poncirus trifoliata) with citrus blue mold fungus Penicillium italicum both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, October 10, 2024
![](../../pictures/archives/compress/2024/3623/jpeg/18t.jpg) Southern prairie aster (Eurybia hemispherica)(?) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3615/jpeg/10t.jpg) Mountain mint (Pycnanthemum tenuifolium) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2024/3615/jpeg/21t.jpg) Section of a false truffle (Rhizopogon) with a parasitic fungus Hypomyces chrysospermus in ultraviolet light from Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 6, 2024
![](../../pictures/archives/compress/2024/3624/jpeg/28t.jpg) Buffalo gourd both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/02t.jpg) 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
![](../../pictures/archives/compress/2024/3623/jpeg/21t.jpg) Sweet everlasting (Pseudognaphalium obtusifolium, cudweed, Gnaphalium) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, September 21, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/09t.jpg) 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
![](../../pictures/archives/compress/2024/3624/jpeg/29t.jpg) Dissected buffalo gourd both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/19t.jpg) 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
![](../../pictures/archives/compress/2024/3618/jpeg/06t.jpg) 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
![](../../pictures/archives/compress/2024/3628/jpeg/01t.jpg) Grass leaves in ultraviolet light on Richards Loop Trail in Sam Houston National Forest. Texas, October 5, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/11t.jpg) Young leaf of mustang grape (Vitis mustangensis) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/07t.jpg) Blooming 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
![](../../pictures/archives/compress/2024/3622/jpeg/15t.jpg) Elegant gayfeather (pinkscale, Liatris hesperelegans, former L. elegans) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 17, 2024
![](../../pictures/archives/compress/2024/3632/jpeg/18t.jpg) Acorns from oaks both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Greenway Trail. College Station, Texas, October 18, 2024
![](../../pictures/archives/compress/2024/3632/jpeg/14t.jpg) Annual broomweed both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Greenway Trail. College Station, Texas, October 18, 2024
![](../../pictures/archives/compress/2024/3637/jpeg/06t.jpg) Leaf of an aquatic plant in ultraviolet light from Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
![](../../pictures/archives/compress/2024/3618/jpeg/04t.jpg) Close-up of fluffy seeds of wand blackroot (Pterocaulon virgatum) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Lick Creek Park. College Station, Texas, September 11, 2024
![](../../pictures/archives/compress/2024/3620/jpeg/16t.jpg) Blooming stickleaf (blazing star) Mentzelia texana(?) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Birch Creek Unit of Somerville Lake State Park. Texas, September 14, 2024
![](../../pictures/archives/compress/2024/3622/jpeg/19t.jpg) Blooming Maximilian sunflower (Helianthus maximiliani) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
![](../../pictures/archives/compress/2024/3622/jpeg/23t.jpg) Center of Maximilian sunflower (Helianthus maximiliani) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, September 18, 2024
![](../../pictures/archives/compress/2024/3624/jpeg/23t.jpg) Slender orange-bush lichen (Teloschistes exilis) both in natural light and under 365 nm ultraviolet (UV-A) blacklight on a twig from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
![](../../pictures/archives/compress/2024/3624/jpeg/19t.jpg) Stickleaf (blazing star) Mentzelia texana(?) with a crab spider both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Nails Creek Unit of Somerville Lake State Park. Texas, September 22, 2024
![](../../pictures/archives/compress/2024/3633/jpeg/26t.jpg) Blooming aster (Symphyotrichum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
![](../../pictures/archives/compress/2024/3627/jpeg/13t.jpg) Layers of yellow onion both in natural light and under 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 3, 2024
![](../../pictures/archives/compress/2024/3629/jpeg/19t.jpg) Green cabbage head both in natural light and under 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 8, 2024
![](../../pictures/archives/compress/2024/3640/jpeg/26t.jpg) Compact tomb of Neil both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Odd Fellow Cemetery. Anderson, Texas, November 9, 2024
![](../../pictures/archives/compress/2024/3640/jpeg/32t.jpg) Handshake symbol on a tombstone both in natural light and under 365 nm ultraviolet (UV-A) blacklight in Odd Fellow Cemetery. Anderson, Texas, November 9, 2024
![](../../pictures/archives/compress/2024/3629/jpeg/20t.jpg) Section of a cabbage head both in natural light and under 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 8, 2024
![](../../pictures/archives/compress/2024/3627/jpeg/10t.jpg) Close-up of yellow onion both in natural light and under 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 3, 2024
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