Synonyms: Parmelia cetrata, Parmelia subisidiosa, Parmotrema cetratum, Parmotrema subisidiosum.
Rimelia subisidiosa is a foliose lichen species characterized by its pale green to yellow-green thallus, lobes 2-5 mm wide, and presence of rhizines on the lower surface. In East and Central Texas, it grows on trees, particularly oak and cedar, in shaded to partially shaded areas. The species is relatively rare in the region, but can be found in areas with high humidity and moderate temperatures, such as near streams and rivers.
Parmotrema subisidiosum (Rimelia subisidiosa)(?) lichen on a tree in Big Creek Scenic Area of Sam Houston National Forest. Shepherd, Texas, February 1, 2019
Lone Star Hiking Trail, Coldspring, TX 77331, USA
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, 2019Little Lake Creek Loop Trail, Montgomery, TX 77356, USAObservations of Rimelia subisidiosa in East and Central Texas reveal its presence on trees in the region. In the Big Creek Scenic Area of Sam Houston National Forest, the lichen was found growing on a tree in Shepherd, Texas, on February 1, 2019. Similarly, it was spotted on a tree along Caney Creek Trail (Little Lake Creek Loop Trail) in Sam Houston National Forest near Huntsville, Texas, on March 2, 2019. The lichen exhibits a ruffled appearance, and its growth on trees suggests it thrives in the forest environment of East and Central Texas. These sightings indicate that Rimelia subisidiosa is present in the area, specifically in the Sam Houston National Forest, and can be found on tree surfaces, highlighting its adaptability to the local ecosystem. Further observations may reveal more about its distribution and abundance in the region.
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