Ser. RuoposPerMeEa. Fam. Rhodymeniacex. 
Pirate CCXCVIILII. 
ERYTHROCLONIUM MUELLERI, Sona. 
Gen. Crrar. Stem terete, its branches constricted as if jointed, composed 
of an articulated axial filament, and three strata; the medullary stra- 
tum composed of longitudinal, interwoven filaments ; the intermediate 
of several rows of roundish, coloured cellules; the cortical of very 
minute, subseriated cellules. Mructification : 1, conceptacles sessile, 
depressed, umbilicate, opening by a terminal pore, containing, within 
a thick pericarp, moniliform strings of spores, radiating from a free 
central placenta; 2, zonate ¢e¢raspores, dispersed through the cortical 
cells—Eryrnroctontum (Sond.), from epvOpos, red, and krwv, a 
branch. 
Frons caule tereti, ramisque articulato-constrictis, ex filo centrali articulato et 
stratis tribus cellularum constituta ; strato medullari filis tenuibus longitudi- 
nalibus intertextis, intermedio cellulis rotundato-angulatis pluriseriatis, corti- 
cali cellulis minimis subseriatis formato. Fruct.: 1, cystocarpia sessilia, de- 
pressa umbilicata, carpostomio demum aperta, intra pericarpium crassum fila 
sporifera moniliformia ex placenta centrali radiantia, foventia: 2, tetraspore 
sparse, zonatim divise. 
Eryturocironium Muelleri ; stem thick, cylindrical, branched; branches 
opposite or whorled, constricted, the internodes fusiform; ramuli mo- 
niliform, their internodes oval or oblong, acute at base. 
E. Muelleri; cawle crasso tereti glabro elongato ramoso, ramis oppositis verti- 
cillatisque articulato-constrictis articulis fusiformibus, ramulis moniliformibus 
eorum articulis ovalibus oblongisve basi acutis. 
ERYTHROCLONIUM Muelleri, Sond. in Linn. v. 25. p. 692. 
Has. Lefebre Peninsula, Dr. Mueller, July, 1852. 
Geogr. Distr. South coast of Australia. 
Descr. Root unknown. Frond 6 inches long or more, very much branched in 
a trichotomous or whorled manner. Primary stem cylindrical, as thick as 
whipcord, imperfectly nodose, either simple or branched, emitting to all 
sides branches, which are more evidently contracted at the nodes into a 
series of joint-like internodes. Branches opposite, alternate or whorled, 
widely spreading, their internodes several times longer than broad, fusiform, 
or tapering at base, closely beset with ramuli. amuli moniliform, of few 
or several bead-like joints, whorled or opposite, horizontally spreading, simple 
or trifid, their joints oval or oblong, the terminal ones obtuse. Cystocarps 
not known. Tetraspores very numerous, minute, zonate, lodged in the 
joints of the ramuli. Co/our a deep vinous-red, darkening in the herbarium. 
