II. 



Contributions to the Bryology and Hepaticology of North America. 



Br WILLIAM S. SULLIVANT. 



PART I. 



{Communicated to the Academy, August 12th, 1846.) 



1. PHYLLOGONIUM NORVEGICUM, Brid. Bryot. Univ. 2, 

 p. 674. — Muse. Alleghan. n. 188. 



It may be doubted if this rare moss and the tropical Pterigjnan- 

 drum fulgens, Hedw., the type of Phyllogonium, Brid., are refer- 

 able to the same genus. A striking dissimilarity in habit, mode of 

 growth, and in the position of the female flowers (which are termi- 

 nal in the one, but lateral in the other), as well as the structure 

 and reticulation of the leaf, all indicate their separation generi- 

 cally. The genus of our moss must remain uncertain until the 

 discovery of its fruit, which we may now expect, since a second 

 locality has been found, in Ohio, producing both male and female 

 plants abundantly. The notice of this moss in the Bryologia Uni- 

 versa is evidently founded on infertile plants alone, collected in 

 Norway, the original locality. Our Ohio specimens furnish the fol- 

 lowing additional particulars. 



Caules plerumque simplices, rarissime e medio vel e summitate 

 innovantes. Folia, illis caulium sterilium exceptis, versus apicem 

 8 



