Cryptothecia striata is a crustose lichen species characterized by its orange to yellow-orange thallus with longitudinal stripes or ridges. In East and Central Texas, it grows on bark, particularly on oak and cedar trees, and occasionally on rock. The lichen's apothecia are immersed to slightly raised, with a pale yellow to orange disc. It is relatively common in the region, found in wooded areas and along streams, with a preference for shaded, humid environments.
Cottony thallus surface of a lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, April 28, 2018
Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 5, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 5, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata on rough oak bark in Lick Creek Park. College Station, Texas, January 18, 2019
Lichens Cryptothecia striata and Phyllopsora pyxinoides (Crocynia pyxinoides) on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Phyllopsora pyxinoides (Crocynia pyxinoides) and Cryptothecia striata lichens on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Pine Tree Trail, Shepherd, TX 77371, USA
Lobed cotton lichen (Crocynia pyxinoides, Phyllopsora pyxinoides) and Cryptothecia striata in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Spreading lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Thallus surface of a lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Round patch of lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, January 19, 2020Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata on a tree on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, March 22, 2020Lone Star Hiking Trail, Montgomery, TX 77356, USA
Close-up of lichen Cryptothecia striata in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 20, 2021Lone Star Hiking Trail, Coldspring, TX 77331, USA
Lichen Cryptothecia striata on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, March 20, 2021Lone Star Hiking Trail, Coldspring, TX 77331, USA
Some zonate fungus spreading over Cryptothecia striata lichen on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 24, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USA
Brown spot of some fungus over Cryptothecia striata lichen on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest north from Montgomery. Texas, April 24, 2021Lone Star Hiking Trail, Montgomery, TX 77356, USAObservations of Cryptothecia striata in East and Central Texas reveal a cottony thallus surface, often found on trees in the Big Creek Scenic Area of Sam Houston National Forest and Lick Creek Park. The lichen grows on rough oak bark and can be found alone or alongside other species like Phyllopsora pyxinoides. It exhibits a range of growth patterns, from spreading to forming round patches. The thallus surface is often visible, and the lichen can be affected by fungi, with some observations showing zonate fungus or brown spots growing over it. The species has been observed in various locations throughout the region, including Shepherd, College Station, and Richards, Texas, across different seasons from January to April. Overall, Cryptothecia striata appears to be a common and widespread species in East and Central Texas.
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