About Usnea strigosa (Ach.) A.Eaton
Usnea strigosa is a fruticose lichen with branches 2 to 5 cm long, and abundant terminal apothecia that measure around 5 mm wide. This species has a worldwide distribution, and it is a common tree-dwelling lichen in Eastern and Southeastern North America. It grows on trees, with oak trees being its most frequent hosts. All Usnea species, including this one, have Chlorophyta green algae as their photosynthetic symbionts.