— 30 — 
known about its distribution on this side of the Atlantic, where it seems to be 
much rarer. Pearson notes the occurrence of his Kantia Sprengelii in North 
America but gives no stations for it, and at the present time the author is 
able to record only two localities, viz. : Lafayette, Louisiana, Lang lots, and 
Devonshire Marsh, Bermuda, Mrs. Britton. Specimens from the first local- 
ity were distributed in Hep. Amer. 179 (as Kantia Sprengelii ), and the Ber- 
muda specimens have already been listed by the writer (as K. Trichomanis '). 1 
Doubtless its true range is much more extensive than these meager records 
would seem to indicate. 
There is perhaps some danger of confusing C. fissa with C. Sullivantii 
Aust., 2 a species which has an extensive range in the eastern part of the 
United States, especially along the Atlantic coast. C. Sullivantii is also 
characterized by bidentate leaves and by small and deeply bifid underleaves, 
each division of which commonly bears a small supplementary tooth on the 
outside. It is, however, smaller and more delicate than C. fissa and usually 
grows scattered among other plants of in loose thin tufts, instead of in com- 
pact mats. Its underleaves are often squarrrose or even reflexed, and their 
divisions and supplementary teeth are acute. In the majority of cases each 
division is tipped with a row of two or three cells and each tooth consists of 
a single projecting cell, but of course these numbers are subject to some 
variation. The cuticle of the leaf-cel s yields another differential character 
of importance, being minutely verruculose or striulate, instead of smooth 
as in C. fissa. C. Sullivantii seems to be the North American repre- 
sentative of the European C. arguta, the two species agreeing in nearly 
all respects. The most important difference between them is to be found 
in the teeth of the leaves. In C. Sullivantii these teeth are small and usually 
parallel with each other, the sinus being narrow: in C. arguta they tend to 
be larger and are more or less divergent, the sinus being broad and shallow. 
C. arguta has been reported from a greenhouse in Philadelphia, 3 but there 
is no evidence that it. is native in this country. 
Another North American species which is even more closely related to 
C. fissa than those so far considered is the West Indian Calypogeia portori= 
censis (Steph.) comb. nov. 4 This species was originally described from Porto 
Rican specimens but is now known from St. Vincent, Dominica and Jamaica. 
It seems to be most at home on logs in moist forests, especially at rather 
high altitudes, and under these conditions frequently forms pure mats of 
considerable extent. C. portoricensis is more robust than C. fissa , and its 
large leaves are rounded at the apex but yet bear two minute teeth sepa- 
rated by a shallow sinus. These teeth exhibit comparatively little variation 
in size. The underleaves are less deeply bifid than those of C. fissa and are 
attached by a more highly arched line; in most other respects the two 
species resemble each other closely. Yale University. 
1 Bull. Torrey Club 33: 131. 1906. 
2 Bull. Torrey Club 6: 18. 1875. Kantia Sullivantii Underw. Bot. Gaz. 14: 196. 1889.- 
3 See Under wood, ]Bull. Torrey Club 19: 300. 1892. 
4 Kantia portoricensis Steph. Hedwigia 27: 280. pi. / i,f 1-3. 1888. According to Spruce 
(Jour. Linn. Soc. Bot. 30: 355. 1894), a synonym of this species is Kantia vincentina H. 
Wright, Jour. Sot. 28: 106. 1891. 
