Common name: streaked rosette lichen.
Physcia atrostriata is a crustose to foliose lichen species characterized by its gray to gray-brown thallus with black-striped lobes. In East and Central Texas, it typically grows on trees, particularly oak and cedar, and rocks in open woods and along roadsides. The species is relatively common in the region, often found in areas with full sun to partial shade and moderate to high humidity.
Streaked rosette lichen (Physcia atrostriata) in Lick Creek Park. College Station, Texas, January 18, 2019
Streaked rosette lichen (Physcia atrostriata) on an oak 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
Heterodermia and streaked rosette lichen (Physcia atrostriata) on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Heterodermia and streaked rosette lichen (Physcia atrostriata) on oak bark on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Streaked rosette lichen (Physcia atrostriata) on oak bark on Caney Creek section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, January 26, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Streaked rosette lichen (Physcia atrostriata) on atree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Streaked rosette lichen (Physcia atrostriata) 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
Streaked rosette lichen (Physcia atrostriata) with soredia in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Streaked rosette lichen (Physcia atrostriata) with liverwort Leucolejeunea conchifolia(?) in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019Lone Star Hiking Trail, Coldspring, TX 77331, USA
Streaked rosette lichen (Physcia atrostriata) 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
Streaked rosette lichen (Physcia atrostriata) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Richards, Texas, February 9, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Streaked rosette lichen (Physcia atrostriata) on yaupon(?) on Alligator Branch section of Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Texas, February 17, 2019Lone Star Hiking Trail, Huntsville, TX 77340, USA
Streaked rosette lichen (Physcia atrostriata) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Streaked rosette lichen (Physcia atrostriata) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Close up of streaked rosette lichen (Physcia atrostriata) on an iron foot bridge across the bayou in area of Winters Bayou in Sam Houston National Forest, east from Waverly. Texas, February 23, 2019Lone Star Hiking Trail, Cleveland, TX 77328, USA
Streaked rosette lichen (Physcia atrostriata) on Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest north from Montgomery. Texas, November 26, 2020Little Lake Creek Loop Trail, Montgomery, TX 77356, USA
Streaked rosette lichen (Physcia atrostriata) on bark of an oak(?) 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
Streaked rosette lichen (Physcia atrostriata) on an oak 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 Physcia atrostriata were made in East and Central Texas, primarily in the Sam Houston National Forest. The species was found growing on various substrates, including oak trees, iron foot bridges, and yaupon. It was often observed with other lichens, such as Heterodermia, and occasionally with liverworts like Leucolejeunea conchifolia. The lichen was seen in different locations within the forest, including Lick Creek Park, Caney Creek section of Lone Star Hiking Trail, Big Creek Scenic Area, and Winters Bayou. It was also found on various sections of the Lone Star Hiking Trail. Observations were made over a period of two years, from 2019 to 2021, with multiple sightings in different seasons, indicating that Physcia atrostriata is a common species in this region. The lichen's presence was noted in several counties, including Grimes, Montgomery, and Walker.
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