482 
TWO NEW SPECIES OF MUSCI 
Tab. XIV. Fig. 1. Plant natural size. 2. Part^of a plant magnified. 
3. Cauline leaves. 4. Summit of a cauline leaf. 5. Outer peri- 
chgetial leaf. 6. Inner do. — All magnified, except Fig. 1. 
This interesting Moss unquestionably belongs to the ge- 
nus Anomodoii of Drs Hooker and Tayloe. Not feehng, 
however, perfectly convinced of the expediency of that ge- 
nus, I have preferred, for the present, placing this new 
species in the genus Neckera^ at the expence of which 
Anomodon itself was constituted. Neckera Americana is 
very nearly related to N. mticulosa {Anomodon viticulosum, 
Muse. Brit.), and has the same peculiar habit, and mode of 
growth, leaves of the same dense and fragile texture, and 
a fruitstalk and capsule nearly similar. In size, however, 
it is much smaller, the leaves are little more than half the 
length, rounded at the extremity, and the nerve disappears 
at a considerable distance from the summit. The capsule 
is also shorter. 
The great resemblance between these two mosses cannot 
escape the most careless muscological observer, and may 
suggest to many the existence, though in an inferior degree, 
of the same relation between some of the Cryptogamous 
plants of Europe and North America that has been detected 
between numerous Phsenogamous plants. It would be 
hazardous, in the present state of muscology, to dilate on 
this subject, any more than on the general geographical re- 
lations of mosses ; especially as from what we do know, we 
find the observation to be correct, that the lower we de- 
scend in the scale of vegetation, the less the distribution of 
plants over the surface of the globe seems to be regulated 
by the laws that influence the more perfect vegetable forms. 
Nevertheless, we do not find in the mosses a disposition to 
a marked geographical distribution altogether abandoned. 
The curious genera Phascum Voitia and Tet7'ap1m seem 
to be confined to temperate and cold regions, and are 
