Budding Tube Lichen

Hypogymnia enteromorpha, the budding tube lichen or gut lichen, is a species of foliose lichen in the family Parmeliaceae. It is most often found in moist conifer forests of western North America, where it grows on bark and weathered wood. The species forms pale grey, hollow lobes with a black underside and commonly develops small bud-like outgrowths along the margins. It is one of the larger and more conspicuous members of its genus, and is frequently...