CONTRIBUTIONS FROM THE DEPARTMENT OF 

 BOTANY OF COLUMBIA UNIVERSITY.— No. ii8. 



Gyrothyra, a new Genus of Hepaticae 



By Marshall a. Howe. 



(Plates 302, 303.) 



[Reprinted from The Bulletin op the Torrby Botanical Club, Vol. 24, No. 4, April 24, 1897.] 



