These lichens, from the U.S. (including 3 from Hawaii) and Canada have not been identified, even to genus, although I, or others, have ventured the occasional guess. There are about 300 photos, arranged on 12 pages, in approximate chronological order, so photos from the same location are generally grouped together. There are also a lot of unidentified lichens grouped with the genera, where I felt confident enough to put them there, and in the "graphids" section. Most of the photos are backed up with voucher specimens; suggestions for identification are most welcome!