LIST OF THE WORKS CONSULTED. 
Acharius. Lichenographia Universalis, 1810. 
Synopsis Lichenum, 1814. 
Almquist. Monographia Arthoniarum Scandinavia;, 1880. 
Anzi. Catal Lichenum in Prov. Sondrens., i860. 
Arnold Lichens in Flora , various dates, 1869-1887, including 
the lichens of the French Jura. 
Branth & Gronlund. Greenland’s Lichen Flora, 1888. 
Chevalier. Sur les Hypoxylons Lichenoides, 1824. 
Dufour. Revis du Genre Opegrapha, 1818. 
Eschweiler. Systema Lichenum, 1824. 
Lichens in Martius Flora Braziliensis, 1833. 
Fee. Essai sur les Cryptog. des Ecorces Exotiques officinales, 1824. 
Supplement to the same, 1838. 
Fries, E. Systema Orbis Vegetabilis, 1825. 
Lichenographia Europaea Reformata, 1831. 
Fries, Th. M. Lichenes Arctoi, i860. 
Genera Heterolichenum Europae, 1861. 
Lichenes Spitsbergenses, 1869. 
Lichenographia Scandinavica, 1874. 
Lichens of English Polar Expedition of 1875-76, 1S79. 
Hepp. Abbild. der Sporen der Flechten Europa’s, 1853-1867. 
Koerber. Systema Lichenum and Parerga, 1855-1865. 
Knight & Mitten. Lichens of New Zealand, i860. 
Krempelhuber. Geschichte der Lichenologie, 1867-72. 
Brazilian and other lichens in Flora, 1869-1878. 
Amboina lichens, 1871. t 
Borneo lichens, 1875. 
South Sea Islands lichens,-. 
Lamy. Lichens cle Mount Dore, 1871. 
Leighton. Ceylon lichens, 1870. 
Lichen Flora of Great Britain, 1871. 
Lindsay. Arthonia melaspermella, 1866. 
Lojka. Adatok, &c., (Hungarian lichens,) 1885. 
Massalongo. Ricerche, &e., 1852. 
Memorie, &c., 1855. 
Sull. Chrysothrix noli-tangere, i860. 
Minks. Beitrage, &c., 1876. 
Morphologisch-Lichenographische Studien, 1880. 
Symbolae Licheno-mycologicae, 1881. 
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