1905] Evans,— Notes on New England Hepaticae,— III 53 
the alpine and arctic regions of the Northern Hemisphere, although 
it is rarely abundant in any one locality. In North America it has 
already been recorded from Greenland, from several widely scat- 
tered stations in British America, and from the Adirondack Moun- 
tains of New York. It is, however, new to New England. Professor 
Farlow’s specimens represent a gemmiparous and rather slender 
form of the species. 
The leaves of Z. Aunzeana vary in form from rotund to quadrate ; 
they are subequally bifid and tend to be complicate, although this 
condition is not always apparent. In rare cases there is a third lobe 
supplementary to one of the others. The sinus is narrow and extends 
to the middle or a little less. The divisions are typically rounded at 
the apex but are often obtusely pointed or, on slender branches, 
even acute. The leaf-cells have small but distinct trigones, and the 
cuticle is minutely verruculose or striate. The underleaves vary 
greatly in size but can usually be demonstrated without much diff- 
culty in spite of the numerous rhizoids. They are either subulate 
and long-acuminate or else deeply bifid with slender divisions. The 
gemmae when mature are thick-walled and angular; as a rule they 
are unicellular but are sometimes divided by a delicate wall into two 
cells. In exposed localities the stems, leaves and gemmae acquire a 
characteristic brownish yellow coloration. 
The presence of underleaves will at once distinguish Z. Aunzeana 
from such species as Sphenolobus Michauxii, Marsupella emarginata 
and ZopAozia inflata, all of which it somewhat resembles in general 
appearance. Among New England species its closest relative is 
undoubtedly Z. /7oerkiz, which has trifid or quadrifid leaves with a 
little group of marginal cilia close to the postical base. There is 
usually no indication whatever of basal cilia in Z. Kunzeana, although 
sometimes one or two minute ahd indistinct teeth may be found in 
this position.’ Its relationship to Z. /loerkii and to other mem- 
bers of the ¿arbatae-group is clearly shown by the occasional presence 
of a third lobe and by the constant occurrence of underleaves, and it 
would seem as if these characters were sufficient to exclude it from 
the genus Sphenolobus, where it is placed by Stephani. 
3. CHILOSCYPHUS PALLESCENS (Ehrh.) Dumort. Syll. Jung. 67. 
1831. Jungermannia viticulosa L, p. 5. Sp. Plant. 1597. 1753. J. 
1 See Schiffner, Lotos, 49: 51. 1901. 
