المنحدرات الجبلية/الجبلية/الجبلية المتوسطة غير الوعائية - CEGL004387

Large to small, typically sheltered cliff faces in the Virginia mountains support a nonvascular community dominated by the "rock tripe" Umbilicaria mammulata, one of the largest lichens in Virginia.  Morris Knob on Knob Mountain, near Liberty, Tazewell County. © DCR-DNH, Gary P. Fleming