![](../../pictures/archives/compress/2019/2531/jpeg/09t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2432/jpeg/22t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/07t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2019/2530/jpeg/27t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a twig in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2019/2432/jpeg/27t.jpg) Underside of perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
![](../../pictures/archives/compress/2019/2432/jpeg/26t.jpg) Close up of perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/18t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on an oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2023/3336/jpeg/12t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2023
![](../../pictures/archives/compress/2020/2628/jpeg/09t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a twig fallen from an oak in Lick Creek Park. College Station, Texas, January 13, 2020
![](../../pictures/archives/compress/2019/2445/jpeg/15t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a thin oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2023/3336/jpeg/13t.jpg) Close-up of perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2023
![](../../pictures/archives/compress/2020/2628/jpeg/11t.jpg) Perforated ruffle lichen (Parmotrema perforatum) and Usnea on a twig fallen from an oak in Lick Creek Park. College Station, Texas, January 13, 2020
![](../../pictures/archives/compress/2019/2530/jpeg/28t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak branch after windy weather in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2019/2531/jpeg/13t.jpg) Perforated ruffle lichen (Parmotrema perforatum) in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2454/jpeg/23t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Washington-on-the-Brazos State Historic Site. Washington, Texas, February 27, 2019
![](../../pictures/archives/compress/2019/2430/jpeg/12t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak twig in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
![](../../pictures/archives/compress/2021/2890/jpeg/08t.jpg) Old perforated ruffle lichen (Parmotrema perforatum)(?) on a tree in Lick Creek Park. College Station, Texas, March 24, 2021
![](../../pictures/archives/compress/2019/2434/jpeg/08t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2434/jpeg/09t.jpg) Perforated ruffle lichen (Parmotrema perforatum) with apothecia on a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/09t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2019/2531/jpeg/06t.jpg) Various foliose lichens on a fallen oak twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2531/jpeg/05t.jpg) Foliose lichens on a fallen oak twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2020/2638/jpeg/09t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a twig of a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
![](../../pictures/archives/compress/2019/2531/jpeg/08t.jpg) Green and orange foliose lichens on a fallen oak twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2447/jpeg/24t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a granite tombstone in Old Independence Cemetery near Independence. Texas, February 10, 2019
![](../../pictures/archives/compress/2020/2820/jpeg/24t.jpg) Perforated ruffle lichen (Parmotrema perforatum) in Washington-on-the-Brazos State Historic Site. Washington, Texas, November 24, 2020
![](../../pictures/archives/compress/2020/2638/jpeg/04t.jpg) Perforated ruffle lichen (Parmotrema perforatum) on a small tree or a bush in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 26, 2020
![](../../pictures/archives/compress/2019/2438/jpeg/03t.jpg) Ruffle lichen Parmotrema submarginale on a fallen oak twig on Park Hudson Trail. Bryan, Texas, January 27, 2019
![](../../pictures/archives/compress/2023/3336/jpeg/11t.jpg) Foliose lichens on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2023
![](../../pictures/archives/compress/2019/2431/jpeg/18t.jpg) Ruffle lichen (Parmotrema) on a tree in Lick Creek Park. College Station, Texas, January 18, 2019
![](../../pictures/archives/compress/2019/2427/jpeg/05t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on yaupon in Lick Creek Park. College Station, Texas, January 6, 2019
![](../../pictures/archives/compress/2019/2425/jpeg/03t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on a thin trunk of Yaupon holly in Lick Creek Park. College Station, Texas, January 1, 2019
![](../../pictures/archives/compress/2024/3461/jpeg/15t.jpg) Amber jelly fungus (Exidia recisa) and foliose lichen on a fallen oak twig in Lick Creek Park. College Station, Texas, January 25, 2024
![](../../pictures/archives/compress/2019/2530/jpeg/32t.jpg) Ramalina(?) lichen on a fallen twig of oak in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2021/2871/jpeg/32t.jpg) Powdered ruffle lichen (Parmotrema hypotropum(?)) on a fallen oak twig at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
![](../../pictures/archives/compress/2020/2628/jpeg/12t.jpg) Cracked ruffle lichen (Parmotrema reticulatum) on Yaupon holly in Lick Creek Park. College Station, Texas, January 13, 2020
![](../../pictures/archives/compress/2019/2432/jpeg/23t.jpg) Various fruticose lichens on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
![](../../pictures/archives/compress/2019/2531/jpeg/11t.jpg) Saucer lichen Ochrolechia pallescens on a fallen oak twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2434/jpeg/12t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) on a thin twig of a bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2531/jpeg/10t.jpg) Southern crimson dot lichen (Ramboldia russula) on a fallen oak twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2434/jpeg/13t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) on a twig of a bush in a half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2531/jpeg/19t.jpg) Slender orange bush lichen (Teloschistes exilis) on a fallen twig in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2615/jpeg/05t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) on a twig of small trees or bushes in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 21, 2019
![](../../pictures/archives/compress/2019/2425/jpeg/13t.jpg) Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 2019
![](../../pictures/archives/compress/2019/2434/jpeg/17t.jpg) Ruffle lichen Parmotrema submarginale(?) on a fallen oak branch at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2434/jpeg/07t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on a fallen oak at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/36t.jpg) Bushy beard lichen (Usnea strigosa) on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2019/2432/jpeg/21t.jpg) Bushy beard lichen (Usnea strigosa) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/34t.jpg) Flowering fringe lichen (Heterodermia echinata) on a fallen oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2019/2433/jpeg/01t.jpg) Flowering fringe lichen (Heterodermia echinata) on a fallen oak twig in Lick Creek Park. College Station, Texas, January 22, 2019
![](../../pictures/archives/compress/2020/2628/jpeg/10t.jpg) Various fruticose lichens on a twig fallen from an oak in Lick Creek Park. College Station, Texas, January 13, 2020
![](../../pictures/archives/compress/2020/2628/jpeg/08t.jpg) Various fruticose lichens on a fallen oak twig in Lick Creek Park. College Station, Texas, January 13, 2020
![](../../pictures/archives/compress/2019/2530/jpeg/29t.jpg) Various lichens on bark of a fallen oak branch in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2019/2448/jpeg/24t.jpg) Ruffle lichen (Parmotrema) on a fallen oak(?) branch on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
![](../../pictures/archives/compress/2019/2530/jpeg/31t.jpg) Dirinaria confusa together with other lichens on a fallen oak branch in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2019/2448/jpeg/23t.jpg) Ruffle lichen (Parmotrema) on a fallen tree branch on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
![](../../pictures/archives/compress/2019/2442/jpeg/10t.jpg) Ruffle lichen (Parmotrema) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
![](../../pictures/archives/compress/2019/2428/jpeg/05t.jpg) Ruffle lichen (Parmotrema) on a dry red cedar tree in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2442/jpeg/11t.jpg) Ruffle lichen (Parmotrema) on tree bark in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/22t.jpg) Ruffle lichen (Parmotrema) on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/23t.jpg) Ruffle lichen (Parmotrema) in shade on a mossy limestone rock in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2021/3084/jpeg/18t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) together with a parasitic gall-forming lichenicolous fungus Tremella parmeliarum on a twig of upland swamp-privet bush at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 20, 2021
![](../../pictures/archives/compress/2019/2443/jpeg/08t.jpg) Ruffle lichen Canomaculina subtinctoria (Parmotrema subtinctorium)(?) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
![](../../pictures/archives/compress/2019/2429/jpeg/21t.jpg) Ruffle lichen (Parmotrema) on a mossy limestone rock in a red cedar forest in Pedernales Falls State Park. Johnson City, Texas, January 11, 2019
![](../../pictures/archives/compress/2019/2446/jpeg/05t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019
![](../../pictures/archives/compress/2024/3542/jpeg/14t.jpg) Ruffle lichen (Parmotrema) on a wooden bench in David E. Schob Nature Preserve at 906 Ashburn Street. College Station, Texas, May 20, 2024
![](../../pictures/archives/compress/2019/2437/jpeg/03t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
![](../../pictures/archives/compress/2019/2436/jpeg/21t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
![](../../pictures/archives/compress/2019/2576/jpeg/09t.jpg) Ruffle lichen (Parmotrema) on a sandstone bench near Lost Pines Overlook in Bastrop State Park. Bastrop, Texas, October 13, 2019
![](../../pictures/archives/compress/2019/2439/jpeg/18t.jpg) Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on a marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 2019
![](../../pictures/archives/compress/2019/2437/jpeg/15t.jpg) Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019
![](../../pictures/archives/compress/2020/2821/jpeg/26t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on a fallen tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 26, 2020
![](../../pictures/archives/compress/2019/2445/jpeg/05t.jpg) Lecanora lichen on an oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2019/2434/jpeg/10t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) on bushes in semi-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, January 25, 2019
![](../../pictures/archives/compress/2019/2458/jpeg/24t.jpg) Ruffle lichen Parmotrema subisidiosum (Rimelia subisidiosa) on a tree on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville. Texas, March 2, 2019
![](../../pictures/archives/compress/2019/2619/jpeg/19t.jpg) Ruffle lichen (Parmotrema) on a tree in Washington-on-the-Brazos State Historic Site. Washington, Texas, December 28, 2019
![](../../pictures/archives/compress/2019/2430/jpeg/06t.jpg) Ruffle lichen Parmotrema submarginale on an oak in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
![](../../pictures/archives/compress/2019/2615/jpeg/02t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) on small trees or bushes in half-open area at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, December 21, 2019
![](../../pictures/archives/compress/2017/2219/jpeg/22t.jpg) Parmotrema lichen on a fallen oak branch in Bee Creek Park. College Station, Texas, December 26, 2017
![](../../pictures/archives/compress/2019/2531/jpeg/18t.jpg) Bushy beard lichen (Usnea strigosa) fallen from an oak in Lick Creek Park. College Station, Texas, June 18, 2019
![](../../pictures/archives/compress/2019/2530/jpeg/30t.jpg) Medallion lichen (Dirinaria confusa) on a fallen oak branch in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2019/2462/jpeg/06t.jpg) Saucer lichen Ochrolechia pallescens on an oak twig in Lick Creek Park. College Station, Texas, March 11, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/17t.jpg) Saucer lichen Ochrolechia pallescens on an oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2024/3613/jpeg/11t.jpg) Powdered ruffle lichen (Parmotrema hypotropum) from a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, September 1, 2024
![](../../pictures/archives/compress/2019/2430/jpeg/07t.jpg) Close up of ruffle lichen Parmotrema submarginale on an oak branch in Washington-on-the-Brazos State Historic Site. Washington, Texas, January 12, 2019
![](../../pictures/archives/compress/2019/2448/jpeg/17t.jpg) Ruffle lichen (Parmotrema), may be P. gardneri, on a tree on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
![](../../pictures/archives/compress/2019/2450/jpeg/20t.jpg) Southern crimson dot lichen (Ramboldia russula) on a twig in Lick Creek Park. College Station, Texas, February 20, 2019
![](../../pictures/archives/compress/2019/2445/jpeg/06t.jpg) Sunken bloodspot lichen (Haematomma persoonii) on an oak twig in Lick Creek Park. College Station, Texas, February 3, 2019
![](../../pictures/archives/compress/2019/2448/jpeg/16t.jpg) Palm ruffle lichen (Parmotrema tinctorum) on a tree on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
![](../../pictures/archives/compress/2024/3610/jpeg/02t.jpg) Foliose lichens Ramalina celastri and Teloschistes exilis on a twig of elm when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight from a trailway near Birch Creek Unit of Somerville Lake State Park. Texas, August 28, 2024
![](../../pictures/archives/compress/2019/2530/jpeg/19t.jpg) Various lichens on oak bark in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2024/3611/jpeg/17t.jpg) Apothecia of a foliose lichen glowing blue in ultraviolet light in Lick Creek Park. College Station, Texas, August 30, 2024
![](../../pictures/archives/compress/2019/2452/jpeg/10t.jpg) Ruffle lichen (Parmotrema) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
![](../../pictures/archives/compress/2019/2451/jpeg/19t.jpg) Ruffle lichen (Parmotrema) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019
![](../../pictures/archives/compress/2019/2467/jpeg/10t.jpg) Slender orange bush lichen (Teloschistes exilis) on a twig of elm tree in Lick Creek Park. College Station, Texas, March 15, 2019
![](../../pictures/archives/compress/2019/2448/jpeg/19t.jpg) Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on a tree on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019
![](../../pictures/archives/compress/2019/2530/jpeg/23t.jpg) Lecanora and Buellia lichens on a small oak in Lick Creek Park. College Station, Texas, June 17, 2019
![](../../pictures/archives/compress/2021/2871/jpeg/33t.jpg) Tuft of thorny Ramallina lichen (Ramalina willeyi) together with Parmotrema on a fallen oak twig at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
![](../../pictures/archives/compress/2021/2871/jpeg/34t.jpg) Slender orange-bush lichen (Teloschistes exilis) together with T. chrysophthalmus, Ramallina and Parmotrema on a fallen oak twig at Lake Somerville Trailway near Birch Creek Unit of Somerville Lake State Park. Texas, February 24, 2021
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