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APPENDIX 
some fronds normal, but others undulately lobed, and 
others forked; imperfectum, margin apparently cut 
away irregularly down to the sori; jugosum, sorus- 
like ridges on the upper surface; lacerato-margi- 
natum, a small marginate form of laceration; lanceo- 
lum, fronds narrowing downwards, but eared at the 
base; macrosorum, sori broad, margin frilled, very 
like polyschides ; muricatum, upper surface rather 
regularly ridge-and-furrowed; multiforme, frond some¬ 
times branchy, at others subulate, marginate, depau¬ 
perate, &c.; nudicaule, fronds variable, stems quite 
smooth ; obtusi-dentatum , deeply lobed, and lobes 
uniformly bluntly toothed; pachyphyllum, fronds 
robust, crenate, rather multifid at top; papillosum, 
warty on the upper surface; peraferum, partially 
crenate, and top gathered into a kind of pouch; 
pocilliferum, irregularly lobed, or forked, with some 
cup-shaped exoresconces on upper surface ; proliferum, 
a bulbiferous variation of marginatum; ramo-margi- 
natum, fronds branched and profusely crisped ; ramo- 
sum magus, fronds large, and joined two or three 
together by their stems; rimosum, top lobed and 
dentate ; resectum, crenately lobed, but ear-lobes quite 
absent; retinervum, fronds irregularly strap-shaped, 
veins often reticulate; sinuatum, margin irregularly 
sinuated ; spirale, fronds twisted like a corkscrew; 
striatum, variegated by oblique yellowish-green 
streaks ; sub-variega turn, fronds very varying in form ; 
sagittifolium, ears at the base distinctly mid-ribbed; 
