419 



Atrichcm, Beauv. 



angustatum, Beauv. Lake Superior, Dr. Parry. 



Bartramia, Hedw. 



pomiformis, Hedw. Montreal River, Dr. Parry. 



MiNUM, 



affine, Blandon. Lake Superior, Dr. Parry. 



Brvum, Linn. 



roseum, Schreber. Lake Superior, Dr. Parry. 



Hypnum, Linn. Feather Moss. 



populum, Hedw. Lake Superior, Dr. Parry. 

 Schreberi, Willd. Lake Superior, Dr. Parry, 

 tamariscinum, Hedw. Lake Superior, Dr. Parry. 



CuMACiuM, Weber & Mohr. Tree Moss. 



dendroides, W. & M. Lake Superior, Dr. Parry. 



HEPATICJE. Liverworts. 

 RicciA, Mitchell, 

 natans, Linn. 



Marchantia, Linn. 



polymorpha, Linn. 



LICHENES. 



Cladonia, Hoffm. Reindeer Moss. 



rangiferina, Hoffm. Falls of St. Croix, Dr. Parry. 



Umbilicaria, Hoffm, Tripe de Roche. 



Muhlenbergii, Ach. Falls of St. Croix, Dr. Parry. 



WOODS OF WISCOKSIX. 



Racine, November 25, 1852. 



Dear Sir : — Your letter, inviting me to prepare a paper for the State 

 Agricultural Society, upon the "Woods of Wisconsin," and making sug- 

 gestions as to the manner in which the subject should be considered, 

 came duly to hand. 



In reply, I cannot but say, that were I to consult my other engage- 

 ments, I should find it impossible to comply with your request ; yet in 



