1916] iM-ans, — Notes on New England Hepaticae, — XIII 109 



America have been reported. In New England there is one record 

 for Connecticut ' and one for Vermont.- The Connecticut record was 

 based on poorly developed male specimens collected in 1856 by D. C. 

 Eaton in the town of Cheshire; the Vermont record, on a few frag- 

 mentary specimens, apparently quite sterile, which were found in 1910 

 by F. Dobbin in the town of Jamaica. These specimens do not agree 

 with the European and western American material of M. Cordaeana. 

 The Connecticut specimens are hardly determinable but clearly belong 

 to the P. i)latyphylla-gxo\xp. The Vermont specimens agree closely 

 with the plants from Willoughby, which are listed abo^'e under P. 

 'pJatiiphyUa, and are therefore included under the same species. 



Only two other reports from the region east of the Mississippi are 

 known to the writer. One was l)ased on specimens collected by W. S. 

 Sullivant near Yellow Springs, Ohio ^■, the other on specimens collected 

 by T. P. James at Narrowsville, Bucks County, Pennsylvania.^ 

 These specimens show rather broad lobules with a short decur- 

 rence and ^■ery immature perianths, in which the teeth at the 

 mouth are scattered. It seems safe to refer them to P. platyphylla, 

 as is done above. Two records made by the writer, one from Stair 

 Portage, Minnesota (MacMillan, Lyon & Brand 42),^ and the other 

 from near Estabrook, Platte Canyon, Colorado (./. M. Holzinger),^ 

 seem to l)e equally open to criticism. The specimens in l:)oth cases 

 should be referred to the P. platyphylla-group and probably represent 

 a poorly dcA'eloped form of P. platyphylla itself; unfortunately it is 

 not possible to reach a positi\e conclusion. 



According to the statements just made the occurrence of M. Cordae- 

 ana in eastern North America seems to be improbable. There are 

 other European species, liowever, which are restricted, in North Amer- 

 ica, to the Pacific Coast region, so that the distribution of M. Cordae- 

 ana in this respect is by no means unique. 



5. PoRELLA PLATYPHYLLoiDEA (Schwein.) Liudb. Hepat. Utveckl. 

 20. 1877 (as Porella platy phylloides) . Jungermannia platyphylloidca 



iSeeHowe, Bull Torrey Club 24: 520. 1897. 



'Rhodoba 14: IS^ 1912. 



'Distributed by Austin in Hep. Bor.-Amer. 91b. 1873. The habilut is given ou the label 

 as follows: "On shaded rocks, near Yellow Springs, Ohio. Sullivant; also in California. Bo- 

 lander." In the writer's set the specimens are unlike any form of Porella known from California 

 and doubtless represent SuUivant's plants. 



* See Porter, Cat. Bry. and Pterid. Pennsylvania 8. 1904. 



5 Minnesota Bot. Stud. 3: 144 1903. 



«Bryologistl8: 47 1915. 



