1908] Evans,— Notes on New England Hepaticae,— VI 185 
NOTES ON NEW ENGLAND HEPATICAE, — VI. 
ALEXANDER W. Evans. 
Durie the past year several important additions have been made 
to the hepatic flora of New England, more especially to the local 
floras of Maine, New Hampshire, and Connecticut. These addi- 
tions are recorded in the present paper, although a number of them 
have already been noted in earlier publications.! ‘The synonymy of 
six other New England species is also briefly discussed. 
1. METzGERIA PUBESCENS (Schrank) Raddi, Mem. Soc. Ital. delle 
Sci. in Modena 18: 46. 1818. Jungermannia pubescens Schrank, 
Prim. Fl. Salisb. 231. 1792. J. tomentosa Hoffm. Deutschlands 
Flora 2: 91. 1795. Echinomitrium pubescens Hüben. Hepat. Germ. 
48. 1834. On bark of yellow birch, near base of tree. Franconia 
Notch, New Hampshire (Miss Haynes). ‘The species is most fre- 
quently found on limestone rocks. It has a wide distribution in Eu- 
rope and Asia and is not uncommon along the Pacific Coast of North 
America from Alaska to Washington. It has also been reported from 
eastern North America, but the records are indefinite and the speci- 
mens upon which they are based seem to have disappeared. ‘The 
plants collected by Miss Haynes are fragmenjary and mixed with M. 
conjugata, but there seems to be no doubt as to the correctness of the 
determination. M. pubescens is at once distinguished from our other 
species by the fact that the upper or antical surface of the thallus is 
densely covered with hairs, which give it a velvety appearance. In 
well-developed plants the midrib is bounded both above and below 
by from eight to ten rows of cells, although the number is frequently 
less on slender branches. ‘There is also but little difference in size 
between these cortical cells and those which form the interior of the 
midrib In M. conjugata and the other species known from the 
United States the upper surface of the thallus is smooth, and the mid- 
rib is bounded above by only two rows of cells and below by from two 
to four rows. There is also a sharp distinction in size between the 
large cortical cells and those in the interior of the midrib. M. pu- 
bescens is further distinguished by its pinnate rather than dichotomous 
1 Collins: Some Mosses from Aroostook County, Maine. Енорова 10: 37, 38. 1908. 
Evans & Nichols: The Bryophytes of Connecticut. Conn. Geol. and Nat. Hist. Survey 
11: 1-203. 1908. Miss Lorenz: Jungermannia in New Hampshire. Torreya 8: 55, 
56. 1908. 
