Material of Caloplaca quercicola, including types, was examined and found to belong to Ramboldia russula. The new synonymy is presented here.

The 2023 checklist for Pennsylvania bryophytes lists 421 moss and 119 liverwort taxa reported from the 67 counties in the Commonwealth, but only 75 mosses and 13 liverworts from Mifflin County. As a result of the field survey reported herein and review of relevant herbaria data, an additional 28 confirmed moss and four liverwort taxa are reported from Mifflin County. Currently, a total of 103 moss and 17 hepatic taxa are reported from Mifflin County, Pennsylvania. Taxa are assigned global and state conservation ranks according to NatureServe guidelines.

Many streams have distinct vegetation zonation, but few have quantified the time it takes to recover or reestablish those vegetation types once they are disturbed. How quickly or slowly a species responds to a disturbance can inform one of the age of past disturbances. Knowing the level at which aquatic mosses and lichens occur is helpful for determining the elevation at which to build infrastructure such as bridges or trails along a stream. Streamside zonation can be used to indicate disturbance levels or modifications to systems while also aiding in determining high water marks or calculating river channel capacity and flood frequency. We found that the aquatic mosses and lichens were relatively slow to reestablish. After 27 years, there were very little changes.