256 ALG ANTARCTICÆ. 
18. Nitophyllum Smithii, nobis; fronde stipitata basi 
cuneata flabelliformi lobata demum lacerata rubra membra- 
nacea nervosa, nervo basilari crasso centrali, lateralibus 
radiantibus tenuibus nunc obsoletis, omnibus sensim eva- 
nescentibus, soris minutis rotundatis in frondis laciniis 
marginem versus densissime sparsis. 
Has. Falkland Islands. 
Fronds 4-7 inches long, narrow in proportion, stipitate ; 
the stipes from half an inch to an inch long, filiform, becom- 
ing winged and passing into the cuneate base of the frond, 
but continuing upwards as a strong midrib for a considerable 
way, in some individuals for nearly three quarters the length 
of thefrond. From this central vein a number of others ra- 
diate in an oblique or arching direction towards the several 
segments of the margin. These, in some specimens, are very 
strongly marked; in others they are much fainter, and in 
some scarcely obvious. The outline of the frond is also ex- 
tremely variable, and sometimes it is so much lacerated or 
cloven into ribbons, that it is difficult to trace the original 
form. 
19. Nitophyllum laciniatum, nobis; fronde stipitata flabelli- 
formi infra crassa subvenosa supra tenui-membranacea 
rosea profunde digitatim lobata vel subdichotomo-pinnati- 
fida, laciniis lato-cuneatis inciso-dentatis, dentibus latissi- 
mis oblongis truncato-obtusis, sinubus angustis, marginibus 
crispulis, soris parvis per frondem sparsis. 
Has. Cape Horn and the Falkland Islands. 
Our specimens are mostly young and all but one (from 
Berkeley Sound) without fruit, and therefore doubts rest on 
the validity of this species which we cannot clear up. We 
feel confident, at least, that it is distinct from any of the 
Antarctic species'known to us, but are not sure that it may not 
be referable to N. Bonnemaisoni, which occasionally is found 
nearly as much laciniated. Still our plant appears different 
from any state of N. Bonnemaisoni that we have seen, though 
it is not easy to express the differences in words. Stipes 
to } an inch long, terminating in the cuneate thickened base 
