Central Appalachian High-Elevation Acidic Nonvascular Boulderfield – CEGL004389
The small "rock tripe" Umbilicaria muehlenbergii and the alpine-boreal foliose lichen Melanelia stygia are two of the characteristic species of the high-elevation sandstone boulderfield on Sounding Knob in Highland County. Highland State Wildlife Management Area. © DCR-DNH, Gary P. Fleming