1912] Evans,— Notes on New England Hepaticae,— IX 13 
closely adherent to the soil. The leaves, although sometimes undi- 
vided, are often bifid, and in the variety insecta most of the leaves 
show the bifid character. The underleaves, although present, are 
often short-lived and difficult to demonstrate. The trigones in the 
leaf-cells are usually smaller than in N. scalaris and the oil-bodies 
are less conspicuous on account of their granular surface. Unfor- 
tunately in both species the oil-bodies lose their peculiarities in old 
material, and sometimes disappear completely from specimens which 
have been long preserved. 
7. Odontoschisma elongatum (Lindb.) sp. nov. O. denudatum, 
var. elongatum Lindb., Not. Soc. F. et Fl. Fenn. 13: 361. 1874. 
In bogs on the margins of ponds. Maine: Upper Wilson Pond, near 
Greenville, Maine (A. W. E. 1911). New Hampshire: Lower 
Greeley Pond, Waterville (Miss Lorenz, 1908). Specimens from 
Scoresby Sound, Greenland, collected by N. Hartz in 1892 and listed 
by C. Jensen ! as O. denudatum, also belong here. The species like- 
wise occurs mixed with the type material of O. Macounii, collected 
in 1869 by Macoun in the Lake Superior region of Ontario. Lind- 
berg's variety elongatum was based on a series of specimens from 
Iceland, Lapland, and Finland. Among these was one collected by 
Angstrém at Lycksele in Lapland and distributed by Gottsche and 
Rabenhorst, under the name Sphagnoecetis communis, in their Hep. 
Europ. 440. This specimen, which agrees fully with the American 
specimens noted above, may be considered the type of O. elongatum. 
According to published records the species grows also in northern 
Germany;? in the Faroe Islands,’ in Scotland,* and in Austria. One 
of the Austrian specimens cited was collected by Breidler near Mitten- 
dorf in Styria and distributed in Flora Exsic. Austro-Hungarica 2340. 
Unfortunately this plant (of which the writer owes an example to 
the kindness of Miss Haynes) does not agree with Lindberg's type 
and should not be included under O. elongatum. The other Austrian 
specimens reported should therefore be further investigated. 
Although O. elongatum sometimes grows mixed with Sphagnum 
and other bryophytes, it often forms large mats which are free from 
admixture. The type specimen is associated with Lophozia inflata 
1 Meddel. om Grønland 15: 369. 1898. 
? Warnstorf, Kryptogamenfl. der Mark Brandenburg 1: 238. 1902. 
3 C. Jensen, Bot. of Feeróes 1: 125. 1901. 
1 Macvicar, Jour. Bot. 43: 118. 1905. 
5 Breidler, Mitt. Naturw. Ver. Steiermark 30: 335. 1894. 
as 
