1912] Evans,— Notes on New England Hepaticae,—X 211 
widely accepted in Europe, in spite of the fact that L. Hatcheri is an 
antarctic species, while L. Baueriana is northern in its distribution, 
no intermediate stations for the plant being known. The first sug- 
gestion that the two species were synonymous is due to Loeske. 
3. LopHozIA HETEROCOLPA (Thed.) M. A. Howe, Mem. Torrey 
Club 7: 108. 1899.! On a wet rock containing magnesium. Round 
Mountain, Franklin County, Maine (Miss Lorenz, 1912). Widely 
distributed in Europe and northern Asia. 'The range in North Amer- 
ica is still incompletely known, but the species has already been 
reported from Greenland, Ellesmere Land, Yukon, Alaska, Ontario, 
Wisconsin, Minnesota, British Columbia, and California. L. heter- 
ocolpa belongs to a group of closely related species, of which L. 
Mueller? (Nees) Dumort. is usually regarded as the type. This group 
has recently been defined by K. Müller as a subgenus of Lophozia, 
under the name Leiocolea? At the present time only two other 
members of this subgenus, L. badensis (Gottsche) Schiffn. and L. 
Kaurini (Limpr.) Steph., are definitely known from New England,’ 
although others are surely to be expected. "The occurrence of gem- 
mae, borne on upright shoots with differentiated leaves, will serve to 
distinguish L. heterocolpa from most of its allies. The gemmiparous 
shoots bear some resemblance to those of L. attenuata (Mart.) Dumort., 
a member of the subgenus Barbilophozia, the modified leaves being 
erect and more or less appressed to the stem. These leaves, however, 
which are in three ranks, are definitely bilobed with dentate or lacerate 
margins, while the gemmae themselves are ellipsoid bodies. In L. 
attenuata the gemmiparous leaves are in only two ranks, they are 
truncate at the apex and shortly but irregularly two- or three-lobed, 
and the gemmae are more or less angular. In the subgenus Leiocolea 
the only other species in which gemmae have been described is Lopho- 
zia harpanthoides Bryhn & Kaalaas,* known from Ellesmere Land, 
Greenland, and King Oscar Land. In this arctic plant the leaf-cells 
are a little smaller than in L. heterocolpa, although their trigones are 
better developed. The gemmae also are said to differ in their sub- 
reniform outline and purple color, those of L. heterocolpa being usually 
constricted in the middle and reddish brown. Aside from the absence 
1 A full synonymy may be found here. 
? Rabenhorst's Kryptogamen-Flora 6: 711. 1910. 
! See Evans, Ruopora 12: 197, 198. 1910. 
* Rep. Second Norwegian Arctic Exped. in the ''Fram"' 11: 31. 1906. 
