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Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Flower buds of mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Flower buds of mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021

Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest near Montgomery. Texas, July 19, 2022

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

Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024

Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021

Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, August 15, 2021

Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022

Flowers of mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021

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

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

Mountain mint (Pycnanthemum tenuifolium) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019

Flowers of mountain mint (Pycnanthemum tenuifolium) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, August 11, 2019

Mountain mint (Pycnanthemum)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024

Mountain mint (Pycnanthemum) in Sam Houston National Forest, on Little Lake Creek Loop Trail. Richards, Texas, August 10, 2008

Narrowleaf mountain mint (Pycnanthemum tenuifolium) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014

Mountain mint (Pycnanthemum tenuifolium) near Pole Creek on North Wilderness Trail of Little Lake Creek Wilderness in Sam Houston National Forest north from Montgomery. Texas, October 6, 2022

Mountain mint (Pycnanthemum) on Kirby Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014

Tachinid(?) fly on Mountain mint (Pycnanthemum) on Kirby Trail in Big Thicket National Preserve. Kountze, Texas, August 2, 2014

Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Blooming elephant foot (Elephantopus carolinianus) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Blooming hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Blooming st. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Narrowleaf, or slender mountainmint (Pycnanthemum tenuifolium) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, June 12, 2022

White flowers of narrowleaf, or slender mountainmint (Pycnanthemum tenuifolium) on Sundew Trail in Big Thicket National Preserve. Kountze, Texas, June 12, 2022

Blooming blackberry on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020

Blooming hawthorn on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020

Blooming Lindheimer s beebalm (Monarda lindheimeri) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020

Blooming sensitive brier (Schrankia uncinata) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020

Blooming orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020

Blooming sanguine purple coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Texas, May 10, 2020

Blooming Macartney rose (Rosa bracteata) on Richards Loop Trail in Sam Houston National Forest. Texas, April 28, 2020

Blooming flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, June 27, 2020

Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021

Blooming butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021

Blooming rock-rose (frostweed, sunrose, Helianthemum carolinianum) on Richards Loop Trail in Sam Houston National Forest. Texas, March 18, 2020

Blooming narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 29, 2021

Blooming slender (long-bristle) Indiangrass (Sorghastrum elliottii) on North Wilderness Loop Trail in Sam Houston National Forest near Richards. Texas, October 8, 2020

Blooming downy phlox (Phlox pilosa) on Richards Loop Trail in Sam Houston National Forest. Texas, March 26, 2020

Some green shoot on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Dayflower (Commelina) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Croton glandulosus on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Little bluestem(?) grass on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Beautyberry (Callicarpa americana) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Gayfeather (Liatris) flower on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Foxtail like grass (Setaria) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Close-up of dayflower (Commelina) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Distorted growth of oak leaves on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Dandelion like seed head on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Tendrils of greenbrier (Smilax) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Purple pleatleaf (Alophia drummondii) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Tall goldenrod (Solidago altissima) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Close-up of flowers of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Slender woodoats (Chasmanthium laxum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Back lit butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Close-up of butterfly pea (Centrosema virginianum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Purple bindweed (Ipomoea cordatotriloba) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Southern wax myrtle (Myrica cerifera) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Shoot of farkleberry (Vaccinium arboreum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Dry handeless coneflower (Echinacea sanguinea) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Southern dawnflower (Stylisma humistrata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Bolete mushroom Boletus patrioticus on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Tiny yellow flowers of Hypericum(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Dayflower (Commelina) with blue flowers on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Small fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Underside of fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Berries of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Shoot of bush clover (Lespedeza thunbergii) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Pine barren flatsedge (Cyperus retrorsus) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Shoot of southern wax myrtle (Myrica cerifera) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Cap of gunpowder Lepidella mushroom (Amanita onusta) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

St. Peter s-wort (Hypericum crux-andreae) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Late-flowering boneset (Eupatorium serotinum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Close-up of bolete mushroom Boletus patrioticus on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Flowers of elephant foot (Elephantopus carolinianus) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

St. Andrew cross (Ascyrum hypericoides, Hypericum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Berries of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Peeling puffball mushrooms (Lycoperdon marginatum)(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Distorted oak leaves caused by insect larvae(?) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Side view of fieldcap mushrooms Agrocybe retigera taken from grass near the trail on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Texture of berries of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Gills of gunpowder Lepidella mushroom (Amanita onusta) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

White resupinate hydnoid mushroom at the base of a dry pine on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Cross section of bolete mushroom Boletus patrioticus on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Spikes of grass longleaf woodoats (Chasmanthium sessiliflorum) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Pinkish flowers of buttonweed (Poor-Joe, Diodia teres) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Purple fruits of flameleaf sumac (Rhus lanceolata) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Flowers of narrow-leaf gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

St. Andrew cross flower (Hypericum, Ascyrum hypericoides) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 2020

Purple toothed polypore mushrooms (Trichaptum biforme) on a dry oak on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020

Flower of hairy wild petunia (Ruellia humilis) on Richards Loop Trail in Sam Houston National Forest. Texas, July 28, 2020