Common names: palm ruffle lichen, Parmotrema Lichen.
Extract from Wikipedia article: Parmotrema is a genus of lichen belonging to the family Parmeliaceae. The genus was circumscribed by Italian lichenologist Abramo Bartolommeo Massalongo in 1860.
Palm ruffle lichen (Parmotrema tinctorum) on a thin trunk of Yaupon holly in Lick Creek Park. College Station, Texas, January 1, 2019 14802 Rock Prairie Rd, College Station, TX 77845, USA
Palm ruffle lichen (Parmotrema tinctorum) on yaupon in Lick Creek Park. College Station, Texas, January 6, 2019 Yaupon Loop, College Station, TX 77845, USA
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 123B Parkview Dr, Somerville, TX 77879, USA
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 Lone Star Hiking Trail, Montgomery, TX 77356, USA
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 Lone Star Hiking Trail, Montgomery, TX 77356, USA
Palm ruffle lichen (Parmotrema tinctorum) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019 Lone Star Hiking Trail, Montgomery, TX 77356, USA
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 Lone Star Hiking Trail, Huntsville, TX 77340, USA
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 Little Lake Creek Loop Trail, Montgomery, TX 77356, USA