 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, August 7, 2021
 Flowers of mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, August 7, 2021
 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) 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 Richards Loop Trail in Sam Houston National Forest. Texas, October 1, 2022
 Mountain mint (Pycnanthemum tenuifolium) on Richards Loop Trail in Sam Houston National Forest. Texas, July 12, 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) 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
 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 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
 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
 Beautyberry (Callicarpa americana) on Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024
 Morning Glory (purple bindweed, Ipomoea cordatotriloba) on Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 2024
 Downy lobelia (Purple dewdrop, Lobelia puberula) on Richards Loop Trail in Sam Houston National Forest. Texas, August 24, 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
 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
 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
 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
 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
 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
 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
 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
 Spores of white resupinate polypore mushroom on a cut surface of a pine log from Richards Loop Trail in Sam Houston National Forest, collected 11/5/2024. Texas, October 11, 2024
 Road FS 203 with oak and pine forest near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Road FS 203 and pine forest near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Young leaves of oak on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Seedling of some tree on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Gymnopus mushrooms on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Blooming aster on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Amanita mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, October 5, 2024
 Shoot of gum Bumelia(?) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Shoot of peppervine on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Rush (Juncus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Beautyberry from road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Flower of blackberry on Forest Service Road 203 on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Shoot of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Shoot of muscat grape on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Young leaves of sassafras on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Dry seeds of boneset (Eupatorium) on Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Beautyberry (callicarpa americana) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Shoot of fleabane (Pluchea) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Young reddish leaves of oak on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Shoot of mustang grape on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Section of Amanita mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, October 5, 2024
 Fluffy seeds of frostweed(?) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 White aster flowers on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Blooming blackberry on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Milkcap mushrooms Lactarius deceptivus(?) on Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Daisy fleabane (Erigeron) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Some green shoots near a pond on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Shoot of hickory on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Pine trees on road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, October 27, 2024
 Some young back lit leaves on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Some small grass on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Globe beak-rush (Rhynchospora) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Hairy leaves of spiderwort (Tradescantia) on Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Yellow flowers of sunflower family on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Some white Amanita mushrooms under pines on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 White flowers of blackberry on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Wild lettuce (Lactuca floridana) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Some brown Gymnopus(?) mushrooms under pines on Richards Loop Trail in Sam Houston National Forest. Texas, February 9, 2024
 Bolete mushrooms Xanthoconium affine on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 Young leaves of hickory on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Lyreleaf sage (Salvia lyrata) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Phylloxera galls on hickory leaves on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Rosette of leaves of Lactuca(?) on FS203 near Richards Loop Trail in Sam Houston National Forest. Texas, February 21, 2024
 Grass leaves in ultraviolet light on Richards Loop Trail in Sam Houston National Forest. Texas, October 5, 2024
 Green milkweed (Asclepias viridis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Blue spiderwort (Tradescantia) flowers on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Nodding beardtongue (Penstemon laxiflorus) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Green milkweed (Asclepias viridis) on Richards Loop Trail in Sam Houston National Forest. Texas, April 13, 2024
 Underside of fieldcap (Agrocybe)(?) mushroom on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Pitcher sage (Salvia azurea) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Daisy fleabane (Erigeron) on Road FS 203 near on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Pink powderpuff flower (Mimosa strigillosa) on Richards Loop Trail in Sam Houston National Forest. Texas, May 1, 2024
 Orange milkweed (Asclepias tuberosa) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 Climbing fern (Lygodium japonicum) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Bull nettle (Cnidoscolus texanus) on Richards Loop Trail in Sam Houston National Forest. Texas, April 21, 2024
 Blue eyed grass (Sisyrinchium) on Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Dry seeds of gayfeather (Liatris mucronata(?)) on Richards Loop Trail in Sam Houston National Forest. Texas, January 21, 2024
 Rose vervain (Glandularia canadensis) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Small bluets (Hedyotis crassifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, March 3, 2024
 Woolly-white (Hymenopappus) on Road FS 203 near Richards Loop Trail in Sam Houston National Forest. Texas, March 30, 2024
 Narrowleaf silkgrass (Pityopsis graminifolia) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
 Fluffy seeds of gayfeather (Liatris) on Richards Loop Trail in Sam Houston National Forest. Texas, October 20, 2024
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