A few of the "loop lichens" (Hypotrachyna spp.) Fist the hairless-spined shield lichen (H. minarum) syn. (Parmelinopsis minarum) always loved the look of this one and how the lobes almost form loops. This is one of 2 Isidiate loop lichens one being very rare. Second we have wrinkled loop lichen (H. livida) I've only encounted this one once but is supposed to be the more common of the 3. This species only has apothecium lacking soredia. Third we have (H. showmanii) named after Ohio lichenologist Ray Showman who I recently had the honor of meeting! This one is opposite of the last lacking apothecium but having soredia. All 3 species seem to like dry upland forests where I commonly see them growing on chestnut oak (Quercus montana).