Ser. RHopOSPERME. Fam. Spharococcoidee 
Prate CCXLI. 
NITOPHYLLUM GUNNIANUM, Zar. 
Gen. Cuan. /rond membranaceous, expanded, areolate, unsymmetrical, 
nerveless or irregularly veined. Fruetification : 1, hemispherical con- 
ceptacles, sessile on the frond, containing a tuft of moniliform spore- 
threads, on a basal placenta; 2, tripartite ¢e¢raspores, m definite sori 
or spots, scattered, or confined to some part of the frond.—Nrro- 
PHYLLUM (Grev.), from niteo, ‘to shine,’ and dvAdov, a leaf. 
Frons membranacea, expansa, areolata, vage fissa, enervia e basi venulis irre- 
gularibus peragrata. Fruct.: 1, coccidia frondi sessilia, hemisphaerica, fila 
sporifera moniliformia a placenta basali emissa foventia; 2, tetraspore trian- 
gule divise, in soros definitos collecta. 
Nivopuyittum Guanianum ; stipes short, ribbed with a suddenly vanishing 
rib, spreading rapidly into a broadly-flabelliform, deeply-cleft, rigidly- 
membranous, dull-red (when dry turning brownish) frond; segments 
broadly cuneate, forked or digitate, with the margin minutely eroso- 
crenulate ; cystocarps scattered over the whole surface ; sori puncti- 
form, very densely scattered toward the apices of the segments. 
N. Gunnianum ; séipite brevi-costato, costdé supra stipitem mox evanescente, in 
frondem latissime flabellatim profunde fissam rigide-membranaceam rubram 
(siecitate fuscescentem) abeunte ; laciniis late cuneatis furcatis digitatisque, 
margine minute eroso-crenulato ; eystocarpiis per totam superficiem sparsis ; 
soris punctiformibus densissime apicen versus sparsis. 
NiropuyLtium Gunnianum, Harv. in Lond. Journ. v. 6. p. 403. Harv. Ner. 
Austr. p. 120. t. 47. J. Ag. Sp. Alg. v. 2. p. 663. Harv. Alg. Exsic. 
n. 287. Harv. in Fl. Tasm. v. 2. p. 312. 
AGLAOPHYLLUM Gunnianum, Kiitz. Sp. Alg. p. 868. 
Has. Port Philip Heads, VW. H. H. Georgetown, Tasmania, 2. Gunn. 
Groar. Distr. South coast of New Holland. Tasmania. 
Descr. Root discoid. Stipes very short, 1-3 lines long, cartilaginous, soon ex- 
panding into the cuneate base of the frond, w hich it enters as an obscure 
midrib, continued for a short distance within the margin. Frond broadly 
flabelliform, 6-10 inches long, 8-12 wide, deeply cloven into numerous 
cuneate segments, which are either bifid or digitate, and variously jagged. 
These segments are 1-4 inches wide, sometimes nearly entire or merely with 
a few shallow marginal lobes, but more frequently they are once or twice 
deeply bifid, the minor divisions being lobed. ‘The axils of the lobes are 
narrow: the apices blunt; the margin scarcely wavy, but very frequently 
minutely erose or unequally deuticulate. In old specimens the frond be- 
