Rock Gnome Lichen (Gymnoderma lineare)

Image: USFS

About

Rock gnome lichen is a lichen found exclusively in the Southern Appalachians, with all populations found in North Carolina or Tennessee (many of these straddling the border). This rare lichen grows only in areas of high humidity, such as high-elevation vertical rock faces that are frequently bathed in fog or in deep gorges at lower elevations. The lichen prefers colder temperatures like those found at Roan.

Threats

  • Heavy recreational use from hikers and climbers

  • Collection

  • Logging

  • Air pollution

  • Changes in microclimate

  • Exotic insect pests such as the wooly adelgid beetle, which are contributing to the demise of Fraser fir forests at higher elevations in the Southern Appalachians

How You Can Help:

  • Always stay on trail to avoid damaging habitat.

  • Never climb onto rock or cliff faces at the Roan Highlands.

  • Never touch or collect plants.

  • Never bring in outside firewood, as this can transport invasive pests.

  • Use the boot brush near Carver’s Gap to remove potential invasive species from shoes.

  • Support funding for conservation initiatives.

  • Volunteer with groups that help restore and maintain Appalachian balds, such as the Southern Appalachian Highlands Conservancy and Appalachian Trail Conservancy.

  • Volunteer with groups that help maintain trails at the Roan Highlands such as the Tennessee Eastman Hiking and Canoeing Club.

  • Always pack out your trash and follow the 7 Leave No Trace principles.

  • View our “How to Help” page for more ideas.