NOTE TO STUDENTS 



The books and papers consulted in the preparation of this 

 work are all cited in the text. Students are especially referred 

 to the following important works on Lichenology :— 



Hbpp, p., Fleohten Buropas. Abbildungen und Besohreibung der Sporen. 

 Nos. 1-962. Zurich, 1853-67. 



NyIjAndeb, W., Synopsis Lichenum. Paris, 1858-60. (Incomplete.) 



Peies, Th. M., Liohenographia Scandinavica. Upsala, 1871-4. 



Sydow, p., Die Fleohten Deutsohlands. Berlin, 1887. 



BoiSTEL, A., Nouvelle Plore des Lichens. Paris, 1896. 



ScHNEiDBE, A., A Text-Book of General Lichenology. Blngliampton, 

 New York, 1897. 



Oliviek, H., Expose Systematique et Description des Lichens de I'Ouest 

 et du Nord-Ouest de la Prance. Paris, 1897. 



PiJNFSiiiCK, M., & A. Zahlbeuckneb, in Engler & Prantl, Die Nafciirliclien 

 Piianzenfamilien 1, 1*. 1898-1907. 



Jatta, a., Sylloge Lichenum Italicorum. Trani, 1900. 



Jatta, a.. Flora Italica Cryptogama, Pars IIL, Lichenes. Rocca S. 

 Casciano, 1909-11. (In progress.) 



