Vol. 27 



No. 3 



BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



MARCH 1900 



A new Genus of Hepaticae from the Hawaiian Island 



By Alexander W. Evans 

 (With Plate i ) 



f Herberta sanguinea collected more than 



Maui 



• 



Austin found a few sterile and fragmentary 



hepatic which he recognized as new and doubtfully referred to the 

 genus Mastigobryum, as M. integrifoluim. At my request, Mr. 

 W. H. Pearson kindly sent me, for examination, a portion of 

 Austin's original material. In the packet there is a single stem 

 of the new species, but it is sufficient to show that, although the 

 plant has much in common with Mastigobryum or Bazzania, as it 

 is now called, it can hardly be retained in this genus, but should 

 rather form the type of a new genus of Hepaticae. The branching 

 of the leafy liverworts was just beginning to receive attention from 

 descriptive hepaticologists at the time Austin wrote, and, as the 

 most essential difference between the new genus and Bazzania is 

 a difference in branching, the disposition which he made of his 

 plant was perhaps justified. 



An examination of Baldwin's material of Herberta sanguinea 

 in the Eaton Herbarium brought to light several additional speci- 

 mens of this curious species and among them a few showing the 

 floral parts but no perianths. During the past summer, how- 

 ever, Mr. C. M. Cooke, Jr., had the good fortune to find a con- 

 siderable quantity of the plant on Konahuanui, a mountain 

 about three thousand feet high, on the island of Oahu. As in 

 Baldwin's material, the specimens do not form pure tufts but 

 grow scattered among other hepatics, here, for the most part, 



[Issued 24 March 1900. ] ( 97 ) 



