 Nodding ladies-tresses orchid (Spiranthes cernua) 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
 Flowers of Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 29, 2022
 Nodding Ladies-Tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 18, 2022
 Nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Flowers of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Inflorescence of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Close-up of nodding Ladies-Tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 18, 2022
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 20, 2018
 Flower spike of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, October 22, 2020
 Flowers of Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 20, 2018
 Close-up of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Inflorescence of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Flowers of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Flower spike of nodding ladies-tresses orchid (Spiranthes cernua) on Richards Loop Trail in Sam Houston National Forest. Texas, November 5, 2020
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 11, 2018
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Caney Creek Trail in Sam Houston National Forest, near Huntsville. Texas, October 18, 2009
 Close up of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Flowers of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Richards. Texas, November 3, 2019
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) in a pine forest on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, November 11, 2018
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, November 24, 2023
 Flower of nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Texas, November 1, 2008
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail marked in Sam Houston National Forest. Texas, November 1, 2008
 Back-lit nodding Ladies-Tresses Orchid (Spiranthes cernua) on Little Lake Creek Loop Trail in Sam Houston National Forest. Texas, November 1, 2008
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) in Lick Creek Park. College Station, Texas, October 17, 2018
 Nodding Ladies-Tresses Orchids (Spiranthes cernua) on black background on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, October 20, 2018
 Paspalum grass when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Sam Houston National Forest. Richards, Texas, October 12, 2024
 White flowers of nodding Ladies-Tresses Orchid (Spiranthes cernua) in a double spiral on Little Lake Creek Loop Trail in Sam Houston National Forest. Texas, November 1, 2008
 Nodding Ladies -Tresses Orchid (Spiranthes cernua) on Lone Star Hiking Trail south from Stubblefield Campground in Sam Houston National Forest. Huntsville, Texas, December 9, 2007
 Flowers of nodding Ladies-Tresses Orchid (Spiranthes cernua) in Lick Creek Park. College Station, Texas, October 17, 2018
 Underside of a sweet gum leaf when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Sam Houston National Forest. Richards, Texas, October 12, 2024
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, June 27, 2019
 Pitcher sage (Salvia azurea) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Sam Houston National Forest. Richards, Texas, October 12, 2024
 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
 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
 Rose vervain (Glandularia canadensis) 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
 Branched noseburn (Tragia ramosa) 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 5, 2024
 Narrowleaf silkgrass (Pityopsis graminifolia) 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
 Nodding Ladies-Tresses Orchid (Spiranthes cernua) in Washington-on-the-Brazos State Historic Site. Washington, Texas, October 6, 2012
 Arrowwood viburnum (Viburnum dentatum) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Sam Houston National Forest. Richards, Texas, October 12, 2024
 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
 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
 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
 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
 Flower of butterfly pea (Centrosema virginianum) 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
 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
 Flower of Pigeon wings (Clitoria mariana) 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
 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
 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
 Narrow-leaf gayfeather (Liatris mucronata(?)) 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
 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
 Blooming 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
 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
 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
 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
 Spurge Euphorbia heterophylla 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, October 19, 2024
 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
 Coral bean (Erythrina herbacea) 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, October 19, 2024
 Downy lobelia (Purple dewdrop, Lobelia puberula) 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
 Section of a mushroom Scleroderma polyrhizum when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Sam Houston National Forest north from Montgomery. Texas, September 26, 2024
 Basket grass (Oplismenus hirtellus) when exposed to regular daylight as well as when illuminated by a 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
 Beefsteak plant (Perilla frutescens) when exposed to regular daylight as well as when illuminated by a 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
 White aster Symphyotrichum drummondii when exposed to regular daylight as well as when illuminated by a 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
 White mistflower (Ageratina havanensis) when exposed to regular daylight as well as when illuminated by a 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
 Pulp of trifoliate orange (Poncirus trifoliata) when exposed to regular daylight as well as when illuminated by a 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
 Mushrooms Gerronema strombodes 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 7, 2024
 Yellow onion when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 3, 2024
 Top of a marble stella when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Tomb of M. Derde when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Section of yellow onion when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 3, 2024
 Pitaya (Dragon fruit) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 13, 2024
 Slice of a dragon fruit when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 13, 2024
 Tomb of William Koppe when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Marble tombstone of Hill(?) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Marble angel over a tomb when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Trunk of a red cedar tree when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Water primrose (Ludwigia) 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
 Caps of turkeytail mushrooms (Trametes versicolor) 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
 Gills of tiny white Marasmius-like mushrooms 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
 Top view of polypore mushrooms Nigroporus vinosus 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 7, 2024
 Underside of polypore mushrooms Nigroporus vinosus 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 7, 2024
 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
 Pore surface of mushrooms Nigroporus vinosus 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 7, 2024
 Slice of a grapefruit when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Farm Patch Produce Market in Bryan. Texas, October 9, 2024
 Section of a grapefruit when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Farm Patch Produce Market in Bryan. Texas, October 9, 2024
 Marble tombstone of Mary Koppe when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Flowers of Bradford pea when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Wolf Pen Creek Park. College Station, Texas, October 9, 2024
 Dry leaf of mulberry 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, October 13, 2024
 Ripe red raspberry 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, October 13, 2024
 Green leaf of a cabbage head when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from HEB supermarket. College Station, Texas, October 8, 2024
 Fruits of Lantana camara when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Bee Creek Park. College Station, Texas, October 15, 2024
 Flowers of Lantana camara when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Bee Creek Park. College Station, Texas, October 15, 2024
 Handshake symbol on a marble tombstone when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight in City Cemetery. Bryan, Texas, October 24, 2024
 Acorns fallen from an oak when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from Lick Creek Greenway. College Station, Texas, October 26, 2024
 Virgin s Bower (Clematis virginiana) 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
 Bead fern (Onoclea sensibilis) 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
 Underside of ochre bracket mushrooms (Trametes ochracea) on a log when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 2, 2024
 Caps of ochre bracket mushrooms (Trametes ochracea) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight on Sand Branch Loop Trail in Sam Houston National Forest near Montgomery. Texas, September 2, 2024
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