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3837-11. Inflorescence of arrowleaf false dragonhead (Physostegia digitalis) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 27, 2026Similar picturesLarge thumbnails | Use small thumbnails | View as slideshow |
 Flowers of narrowleaf false dragonhead (Physostegia digitalis) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 27, 2026  Narrowleaf false dragonhead (Physostegia digitalis) 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. Montgomery County, Texas, June 27, 2026  Flowers of narrowleaf false dragonhead (Physostegia digitalis) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 27, 2026  Cluster of flowers of narrowleaf false dragonhead (Physostegia digitalis) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 27, 2026  Narrowleaf false dragonhead (Physostegia digitalis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019  Flowers of narrowleaf false dragonhead (Physostegia digitalis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019  Southern Slender Ladies Tresses orchid (Spiranthes tuberosa) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Masses of flowers of narrowleaf false dragonhead (Physostegia digitalis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019  Cluster of flowers of narrowleaf false dragonhead (Physostegia digitalis) on Little Lake Creek Loop Trail in Sam Houston National Forest. Richards, Texas, June 29, 2019  Woolly-white (Hymenopappus artemisiaefolius) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 11, 2026  Handeless coneflower (Echinacea sanguinea) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 15, 2026  Narrow-leaf gayfeather (Liatris mucronata(?)) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, July 5, 2026  Racemed milkwort (Polygala polygama) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight collected on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 11, 2026  Flowers of sow palmetto under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 13, 2026  Flowers of woolly-white (Hymenopappus artemisiaefolius) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 11, 2026  Finger false dragonhead (Physostegia digitalis) in Watson Rare Native Plant Preserve. Warren, Texas, June 25, 2022  White-flowered milkweed (Asclepias variegata) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight, from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 12, 2026  Lindheimer s beebalm (Monarda lindheimeri) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026  Handeless coneflower (Echinacea sanguinea) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 15, 2026  Blue waterleaf (Hydrolea ovata) both in natural light and under 365 nm ultraviolet (UV-A) blacklight taken from Road FS203 near Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, July 25, 2026  Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, July 5, 2026  St. Andrew cross flower (Hypericum, Ascyrum hypericoides) both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, July 5, 2026  Flowers of Matelea decipiens milkvine under both white light and a 365 nm ultraviolet (UV-A) LED flashlight, from Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 12, 2026  Jellied false coral mushrooms (Sebacina schweinitzii) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Close-up of jellied false coral mushrooms (Sebacina schweinitzii) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Shoots of false indigo bush (Amorpha fruticosa) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lick Creek Park. College Station, Texas, March 15, 2026  Blooming false indigo bush (Amorpha fruticosa) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lick Creek Park. College Station, Texas, March 15, 2026  Golden Reishi mushroom (Ganoderma curtisii) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight, from Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, August 1, 2026  Flowers of Virgin s Bower (Clematis virginiana) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight, from Stubblefield section of Lone Star hiking trail north from Trailhead No. 6 in Sam Houston National Forest. Texas, August 1, 2026  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  Mushrooms Clitopilopsis hirneola on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Gymnopus mushrooms under pines on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Dissected fruit of purple passionflower (Passiflora incarnata) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lick Creek Park. College Station, Texas, June 29, 2026  Blue waterleaf (Hydrolea ovata) when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight taken from a pool near Road FS203 near Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, July 25, 2026  Basket flower (Centaurea americana) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight taken from David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, June 4, 2026  Flowers of sow palmetto both in natural light and under 365 nm ultraviolet (UV-A) blacklight from Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, June 13, 2026  Spores (in KOH, spore print pimk) of mushrooms Clitopilopsis hirneola collected from Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Elm shoots under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Wolf Pen Creek Park. College Station, Texas, March 6, 2026  Flowers of rain lily (Cooperia drummondii) on a lawn under both white light and a 365 nm ultraviolet (UV-A) LED flashlight on Lick Creek Greenway Trail. College Station, Texas, July 20, 2026  Tiger s Eye mushrooms Coltricia focicola (C. perennis group) at the base of a burned pine on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Fringed puccoon (Lithospermum incisum) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Old Baylor Park. Independence, Texas, March 5, 2026  Fresh leaves of oak under both white light and a 365 nm ultraviolet (UV-A) LED flashlight in Lick Creek Park. College Station, Texas, March 3, 2026  Section of fruit of papaya under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Kroger Supermarket. College Station, Texas, July 30, 2026  Cross section of a fruit of tomatillo from Kroger supermarket under both white light and a 365 nm ultraviolet (UV-A) LED flashlight. College Station, Texas, May 27, 2026  Leaf of mulberry under both white light and a 365 nm ultraviolet (UV-A) LED flashlight in Wolf Pen Creek Park. College Station, Texas, March 2, 2026  Green seeds of elm under both white light and a 365 nm ultraviolet (UV-A) LED flashlight in Wolf Pen Creek Park. College Station, Texas, March 2, 2026  Hawthorn(?) flowers under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lick Creek Park. College Station, Texas, March 3, 2026  Underside of elm shoots under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Wolf Pen Creek Park. College Station, Texas, March 6, 2026  Spores (spore print white) of lemon Amanita mushroom (Amanita levistriata) collected 2 days before on FS203 near Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 5, 2026  Texture of Tiger s Eye mushrooms Coltricia focicola (C. perennis group) at the base of a burned pine on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Gills of Tiger s Eye mushrooms Coltricia focicola (C. perennis group) at the base of a burned pine on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Close-up of Tiger s Eye mushrooms Coltricia focicola (C. perennis group) at the base of a burned pine on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Top view of Tiger s Eye mushrooms Coltricia focicola (C. perennis group) at the base of a burned pine on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Underside of Tiger s Eye mushrooms Coltricia focicola (C. perennis group) at the base of a burned pine on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, June 7, 2026  Japanese honeysuckle (Lonicera japonica) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Bee Creek Park. College Station, Texas, April 9, 2026  Chinaberry flowers (Melia azedarach) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Bee Creek Park. College Station, Texas, March 20, 2026  Oak seedlings on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Flowers of showy evening primrose under both white light and a 365 nm ultraviolet (UV-A) LED flashlight, from Wolf Pen Creek Park. College Station, Texas, April 6, 2026  Fluffy seed heads of dandelion under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lick Creek Park. College Station, Texas, March 3, 2026  Shoot of gum Bumelia (Sideroxylon lanuginosum) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight in Wolf Pen Creek Park. College Station, Texas, March 2, 2026  Skullcap (Scutellaria parvula) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Birch Creek Unit of Somerville Lake State Park. Texas, May 16, 2026  Queen Anne s lace (Daucus carota) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Wolf Pen Creek Park. College Station, Texas, May 22, 2026  Back lit shoot of oak on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Ripening dewberry on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 11, 2026  Some green plant on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Wasp on a leaf on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Mushrooms Agaricus auricolor on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 3, 2026  Shoot of hickory on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Mantis ootheca on a burned log on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 3, 2026  Blooming blackberry on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Flower of dewberry on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Young leaves of an oak on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Shoot of sweetgum on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Back lit oak sapling on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Side view of flowers of fringed puccoon (Lithospermum incisum) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Old Baylor Park. Independence, Texas, March 5, 2026  Flowers of fringe tree (Chionanthus retusus) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Wolf Pen Creek Park. College Station, Texas, March 18, 2026  Close-up of a fluffy seed head of dandelion under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lick Creek Park. College Station, Texas, March 3, 2026  Spiny heads of button snakeroot (Eryngium yuccifolium) under both white light and a 365 nm ultraviolet (UV-A) LED flashlight from Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, June 28, 2026  Powderpuff (Mimosa strigillosa) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Thorny shoot of blackberry on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Orange seedling of blackjack(?) oak on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Young leaves of hickory on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Shoot of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Section of Agaricus mushrooms on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 11, 2026  Shoot of flameleaf sumac on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Mushrooms Panus strigellus on a log on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 11, 2026  Reddish young leaves of an oak on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, April 18, 2026  Fresh leaves of sweetgum on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Reddish young leaves of an oak on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 28, 2026  Handeless coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 3, 2026  Blooming dewberry on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Climbing fern (Lygodium japonicum) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 3, 2026  Close-up of dewberry flower on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Reddish leaves of blackjack(?) oak on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Cap of a brittlegill mushroom Russula perlactea on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 3, 2026  Fresh leaves of sweetgum on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Section of mushrooms Agaricus auricolor on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 3, 2026  Shoot of mustang grape on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, March 22, 2026  Handeless coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Montgomery County, Texas, May 25, 2026 |