Ser. RHODOSPERME. Fam. [elminthocladee. 
Puate CCLXXXIV. 
NEMALION? INSIGNE, Harv. 
Guy. Cuar. Frond cylindrical, gelatinous, elastic, dichotomous, with a 
cord-like axis clothed with a continuous periphery of filaments in- 
vested in gelatine ; the axis composed of long, subsimple, longitudinal, 
interlaced threads, surrotinded by anastomosing threads, from which 
proceed the horizontal, dichotomous, fastigiate, moniliform, peripheric 
threads. Fructification: 1, sporiferous nucleus (desmiocarp) immersed 
among the peripheric threads, spherical, formed of many clavate spore- 
threads, radiating from a central point; 2, tetraspores formed in the 
terminal cells of the peripheric filaments, triangularly divided. Nu- 
maLIon (Duby), from vnua, a thread, and Anvov, a crop. 
Frons teretiuscula, lubrica, dichotoma, aai filisque investientibus, stratum con- 
tinuum periphericum formantibus, constituta ; axi filis elongatis simplicius- 
culis in columnam medullarem intricatis, extra hanc sparsioribus, anastomo- 
santibus, in fila peripherica horizontalia dichotoma fastigiata invicem libera 
oblique excurrentibus. Fruct.: 1, desmiocarpia strato peripherico subummersa, 
filis gemmidiiferis plurimis clavatis, a puncto centralt radiantibus, nudis con- 
stitula; 2, tetraspore in articulis terminalibus formate, triangule divise. 
J. Ag. Sp. Alg. v. 2. p. 417. 
Nemation? insigne ; main frond terete, robust, irregularly forked, the stem 
and branches to all sides emitting slender, many times dichotomous, 
divaricating ramuli; all the axils very wide. 
N. insigne; fronde primaria tereti robusta vage furcata, caule ramisque ramulos 
tenues pluries dichotomos divaricatos quoquoversum emittentibus ; axillis 
obtusissimis. 
Nemation insigne, Harv. MS. in Herb. T. C. D. 
Nemastoma? densa, Harv. Alg. Austr. Exsic. n. 431. Harv. in Hook. Fi. 
Tasm. v. 2. p. 328. 
Has. On mudflats below Georgetown, in the Tamar, Gunn, Wee The: 
Grocr. Distr. Tasmania. 
Duscr. Root a disc. Frond 6-8 inches long, and as much in the expansion of 
the branches, very bushy. Stem 1-1 lines in diameter, terete, not much 
attenuate upward, simple or forked, furnished with a few, much-divaricated, 
once or twice forked branches. Both stem and branches are everywhere 
