1872-1888 (reprint 1964) xx, 261, [1], 176, 281, [1] p., cloth. Includes: A Synopsis of the North American Lichens: Part I. Parmeliacei, Cladoniei, and Coenogoniei. Part II. Lecideacei, and (in part) the Graphidacei / Genera Lichenum: An Arrangement of the North American Lichens.