VII 189 
1909] Evans,— Notes on New England Hepaticae, 
Vail). North Carolina: Blowing Rock Mountain (J. K. Small); 
Hog Back Mountain (Н. А. Green).! 
In its dioicous inflorescence M. crassipilis agrees with M. furcata, 
and the costa is built up on the same type in the two species. The 
thallus of M. erassipilis, however, is more or less convex, the postical 
surface of the wings is usually densely pilose, and the marginal cilia 
(although occurring singly) are not displaced to the postical surface. 
The cells of the thallus, also, average less than 35 y in diameter, whereas 
in M. furcata they average more than 35 и. But the most remarkable 
structures found in M. erassipilis are the gemmae. ‘These are fre- 
quently produced in great abundance and arise on the antical surface 
of the wings and not on the postical surface as Lindberg described. 
Each gemma is in the form of a circular disc, one cell thick throughout 
and usually showing a single two-sided apical cell. The surface of 
the gemma is smooth but the margin usually bears a few straight cilia, 
irregularly distributed. ‘Che gemmiparous branch is not strongly 
modified in appearance, but the development of the gemmae tends 
to limit its growth. Lindberg describes the female branch as being 
smooth, but it shows this condition only when immature; as it grows 
older it becomes sparingly setose or pilose along the margin and 
occasionally develops a very few short surface cilia. The antheridial 
branch is smooth, and the calyptra and sporophyte are still unknown. 
According to Lindberg M. crassipilis is to a certain extent inter- 
mediate between M. furcata and M. dichotoma (Swartz) Nees, a tropi- 
cal species known from the West Indies and Brazil. In М. dichotoma, 
which is rather more robust than M. crassipilis, the costa is bounded 
above by from three to five cells and below by from five to eight, the 
cells average about 50 у in diameter, the cilia are longer and more 
abundant, and the female branch is pilose. The gemmae of M. 
dichotoma, so far as Lindberg describes them, are similar to those of 
M. crassipilis and also arise from the surface of the thallus-wings. 
3. PeLLIA FABRONIANA Raddi, Mem. Soc. Ital. delle Sci. in Modena 
18: 49. pl. 7. f. 5. 1818. Jungermannia calycina 'Tayl.; Mackay, 
Fl. Hibern. 2: 55. 1836. Рета calycina Nees, Naturgeschichte 
der europ. Leberm. 3: 386. 1838. Wet bank of brook; Newfane, 
Vermont (A. J. Grout). The species is sometimes known as P. 
1 The specimens from several of these localities have been listed elsewhere as M. 
conjugata. See Mem. Torrey Club 4: 195. 1893. Also Adirondack League Club 
Year Book for 1904: 45. 
