Ser. RHODOSPERME. Fam. Rhodymeniacee. 
Prats CCLVIII. 
RHODOPHYLLIS? NITOPHYLLOIDES, Harv. 
Gen. Cuar. Frond flat, membranous, dichotomously or pinnately decom- 
pound, mostly margined with leafy or slender processes, and com- 
posed of two strata of cells ; the medullary stratum formed of roundish- 
angular cells, the cortical of coloured cellules in one or few rows. 
Fructification : 1, marginal, external conceptacles, containing within 
a pericarp formed of radiating filaments, a compound nucleus, formed 
of bundles of spore-threads radiating from a basal (or central) pla- 
centa; 2, zonate ¢efraspores, immersed in the peripheric cells of the 
segments or marginal processes. —RHopoPHYLLIs (Kiitz.), from podeos, 
red, and durdAor, a leaf. 
Frons plana, membranacea, dichotome v. pinnatim decomposita, segmentisque 
ciliisve marginalibus obsita, stratis duobus contexta ; strato medullari cellulis 
rotundato-angulatis, corticali cellulis coloratis uni- v. pauci-seriatis composito. 
Fruct.: 1, cystocarpia marginalia, externa, pericarpio filis moniliformibus 
radiantibus conflato munita, nucleum compositum ex fasciculis filorum radian- 
lium formatum foventia ; filisdemum in sporas solutis ; 2, tetraspore zonatim 
divise, fronde v. lacinulis marginalibus immerse. 
RuopoPHyLus ? xitophylloides ; frond rigidly membranous, flabelliform, 
irregularly dichotomo-multifid ; laciniz broadly linear, patent, obtuse, 
ciliato-dentate ; tetraspores immersed in the superficial cells, scattered 
over the whole frond. 
R.? nitophylloides; fronde rigidiuscule membranacea flabelliformi irregulart- 
ter dichotomo-multifida ; laciniis lato-linearibus patentibus obtusis margine 
ciliato-dentatis ; tetrasporis (zonatim divisis) inter cellulas superficiales im- 
mersis, per totam frondem sparsis. 
Nov. Gen. ? Harv. in Trans. R. I. Acad. v. 22. p. 549. No. 184. Alg. dustr. 
Exsic. No. 285. 
SrictosporuM dentatum, Harv. MSS. in Herb. T. C. D. 
CALLIBLEPHARIS ? nitophylloides, Harv. MSS. in Herb. T. C. D. 
Has. Garden Island, W. Australia, VW. H. H., G. Clifton. 
Geocr. Distr. West coast of Australia. 
Descr. Frond 6-8 inches long and as much or more in the expansion of the 
divisions, from the base divided into many, irregularly dichotomous or mul- 
tifid, spreading laciniz, all the axils very wide and rounded. Lacinie from 
quarter to half inch broad, or more, nearly linear throughout, the wider 
