166 CRYPTOGAMIA ANTARCTICA. [Puegia, the 
from which it differs remarkably in the thickened margin of the frond not being sinuated, but proliferous ; in the 
leaves all being petiolate and arising from the margin, and not from lacinie of the frond; and in the position of the 
fructification. 
We have, in figuring the nobler species of this and some other genera, endeavoured to commemorate the 
services rendered to the botany of the Antarctic regions by those officers of the Antarctic Expedition who particularly 
devoted themselves to increasing the botanical collections. Their names appear to be more properly associated 
with the lge, than with any other tribe of plants; comprising, as these do, the greater part of the vegetation of that 
element which these gentlemen have adopted for their home, and being natives of the regions they have so success- 
fully explored. : 
Puate CLXXV. Fig 1, apex of frond and sori; fig. 2, portion of ditto showing the spherospores :— highly 
magnified. 
18. NITOPHYLLUM, Grev. 
1. NıIrOoPHYLLUM lividum, Hook. fil. et Harv.; fronde e stipite brevi filiformi cartilagmeo late expansa 
tenerrima basi vix venosa furcata v. dichotoma margine undulata livido-purpurea, laciniis patentibus oblongis 
obtusis, soris minutissimis punctiformibus coccidiisque perplurimis per totam frondem sparsis. Nobis i» 
Lond. Journ. Bot. vol. iv. p.253. ~ (Tas. CLXXIX.) 
Has. Falkland Islands; Berkeley Sound and Port William, not uncommon. 
Stipes cartilagineus, filiformis, 1—1 unc. longus, ad basin frondis evanidus. Frons 4 unc. longa, 6 v. plures lata, 
in lacinias paucas latiusculas furcatas apice obtusas divaricatas divisa, avenia, nisi ad imam basin, ubi stipes in venas 
breves evanidas abiit. Substantia tenerrima. Color livide purpureus, ut in Porphyra, sed vix nitens. 
The colour affords a very distinctive character for this species, in which particular it resembles only one of its 
congeners, the N. Gunnianum, Harv., of Tasmania. But that plant, is of a much thicker texture and less lubricous, 
A single imperfect specimen from Cape Horn probably belongs to the N. lividum. Of the mass of radiating spores 
contained in the capsules of the species, only those at the base of the cavity are fertile. 
Prats OLXXIX. Fig.l, sori; fig. 2, capsule; fig. 3, vertical section of the same; fig. 4, portion of ditto :— 
all highly magnified. 
2. NrroPHYLLUM fusco-rubrum, Hook. fil. et Harv.; stipite filiformi elongato nunc dichotome ramoso 
nudo, ramis frondiferis, frondibus flabelliformibus lobatis v. longitudinaliter fissis crasso-membranaceis fusco- 
rubris, basi cuneatis in stipitem gradatim angustatis tenuiter venosis, margine plano subintegerrimo, apicibus 
(exemplaribus nostris) laceris, soris minutissimis punctiformibus coccidiisque numerosissimis per totam 
frondem sparsis. Nobis in Lond. Journ. Bot. vol. iv. p. 254. 
Has. Kerguelen’s Land; parasitical on larger sea-weeds in Christmas Harbour. 
Stipes 1-8 unc. longus, simplex v. irregulariter ramosus, ramis in frondes cuneatas elongatas exeuntibus. 
Frondes 3-5 unc. longe, latitudine varie, ima basi obscure venose, irregulariter profunde fisse, laciniis cuneatis 
linearibusve. Sor minimi, inconspicui, Spherospore plerumque solitarie, per totam paginam frondis creberrime 
sparse. Coccidia frondibus distinctis numerosa. Substantia firma, basi subcartilaginea. Color luride fusco-ruber.— 
Stirps N. ulvoideo, Hook. similis, sed abunde differt colore, sphzerosporis sparsis, stipiteque ramoso elongato. 
Apparently a native of Kerguelen's Land only, where it was found sparingly, adhering to the stems of larger 
Alge. The colour, texture, and branching stem at once distinguish this from its congeners. 
3. NITOPHYLLUM Crozieri, Hook. fil. et Harv.; fronde basi longe cuneata in stipitem angustata lineari- 
Janceolata v. ovata v. late ovato-lanceolata integerrima v. in lacinias plurimas longitudinaliter fissa enervi 
pt 
