Synonyms: Canomaculina leucosemotheta, Neuropogon ciliata, Neuropogon ciliatus, Parmelia amphigymnioides, Parmelia ciliata, Parmelia concors, Parmelia decorata, Parmelia diffusoides, Parmelia foliosa, Parmelia laevigata, Parmelia leucosemotheta, Parmelia livido, Parmelia macquariensis, Parmelia odontata, Parmelia perforata, Parmelia perlata, Parmelia praeperlata, Parmelia pseudovirens, Parmelia reterimulosa, Parmelia reticulata, Parmelia sanctae, Parmelia urceolata, Parmelia virens, Parmotrema leucosemothetum, Parmotrema pseudovirens, Rimelia reticulata, Usnea ciliata.
Common names: cracked ruffle lichen, Black Sheet Lichen.
Parmotrema reticulatum is a foliose lichen species characterized by its large, pale green to grayish-green thalli with a reticulate vein pattern on the lower surface. In East and Central Texas, it typically grows on trees, particularly oak and cedar, in open woodlands and along forest edges. The species is commonly found in areas with full sun to partial shade and moderate to high humidity. Its distribution in the region includes the Edwards Plateau, Post Oak Savannah, and Piney Woods ecoregions, where it often co-occurs with other lichen species such as Parmotrema perforatum and P. crinitum.
Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on bark of hackberry tree in Lemontree Park. College Station, Texas, January 2, 2019
1406 Holik Dr, College Station, TX 77840, USA
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, 2019Lone Star Hiking Trail, Montgomery, TX 77356, USA
Cracked ruffle lichen (Parmotrema reticulatum, Rimelia reticulata) on a marble tombstone in Boonville Cemetery. Bryan, Texas, January 27, 20193504 Pioneer Cir, Bryan, TX 77808, USA
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, 2019Lone Star Hiking Trail, Huntsville, TX 77340, USA
Cracked ruffle lichen (Parmotrema reticulatum) on Yaupon holly in Lick Creek Park. College Station, Texas, January 13, 2020Iron Bridge Trail, College Station, TX 77845, USAObservations of Parmotrema reticulatum in East and Central Texas reveal a wide range of substrates that the species can thrive on. The lichen was found growing on the bark of hackberry trees, as seen in Lemontree Park, College Station, and on trees along the Lone Star Hiking Trail in Sam Houston National Forest near Huntsville. Additionally, it was observed on non-organic surfaces such as a marble tombstone in Boonville Cemetery, Bryan. The species also grows on Yaupon holly, as observed in Lick Creek Park, College Station. The lichen's presence was recorded across different locations and times, including January 2019 and January 2020, indicating its adaptability to various environments in the region. Its ability to colonize diverse surfaces highlights its ecological flexibility. The species' distribution suggests it is widespread in East and Central Texas.
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