APPENDIX. 
Adiantum capillus-veneris (p. 10), dissectum, 
pinnas deeply and finely cut j incisum, cut; minus, 
dwarf; ramulosum, much branched; rotundatum, 
Pinnae roundish. 
Asplenium adiantusi-nigrum (p. 22). —Several 
°ther varieties of this Fern have been noticed; but 
not one of them, we think, would remain permanently 
v arying from the normal form if all were subjected to 
the same soil, culture, degree of light, and climate 
as are most congenial to the type species. They 
: — dccompositum, which differs from aculum in 
having the segments of the leafits less pointed, less 
r ‘gid, and in being nearly quadripinnate—it occurs in 
■Devonshire; fissum, also from Devonshire, has its 
^aflts cut into fino pointed segments, which are, in 
lact, the usual teeth of the leafits more deeply 
divided—the rootstock (caudex) is longer than in 
