Ser. RuoposPERMEA:. Fam. Spherococcoidee. 
Prats CCLXXXVI. 
GRACILARIA FURCELLATA, donut. 
Gen. Cuar. Frond filiform, compressed, or flat, cartilaginous, irregularly 
branched, composed of two strata; the medullary stratum of large, 
roundish, angular cells, smaller outwards, usually containing granules ; 
the cortical of minute cellules, vertically seriated or in a single row. 
Fructification: 1, hemispherical or conoidal conceptacles, sessile on 
the branches, containing within a thick pericarp obovate spores ar- 
ranged in spore-threads issuing from a basal placenta; 2, ¢e¢raspores 
cruciate or tripartite, dispersed among the surface-cellules of the 
branches and ramuliimGracrbaria (Grev.), from gracilis, ‘slender ;’ 
applicable to the filiform species. 
Frons filiformis, compressa, v. plana, carnoso-cartilaginea, vage ramosa, ex stratis 
duobus contexta. Stratum medullare cellulis magnis rotundato-angulatis, ex- 
terioribus sensim minoribus, materie granulosa sepe repletis ; corticale cellulis 
minimis uni- v. pluri-seriatis. Fruct.: 1, conceptacula hemispherica, sessilia, 
intra pericarpium crassum fila sporifera e placenta basali radiantia foventia ; 
2, tetraspore sparse, cruciatim divise. 
GracitaRia furcellata; frond softly cartilaginous, terete, attenuated up- 
wards, many times forked, fastigiate ; cystocarps roundish-ovate, ses- 
sile, scattered. 
G. furcellata ; fronde cartilaginea flaccida tereti sursum attenuata pluries dicho- 
toma fastigiata, cystocarpiis ovatis sessilibus sparsis. 
GRACILARIA furcellata, Mont. in Herb. T. C. D. 
Procarta furcellata, Mont. Alg. Vem. n. 12. Sylloge, p. 413. 
Has. Fremantle beach, W. H. H., G. Clifton. 
Grocr. Distr. Red Sea. 
Descr. Root ? Frond 6-12 inches long, and as much or more in the expansion 
of the branches, nearly a line in diameter at the base, not a quarter of a line 
in the middle, and scarcely more than setaceous at the attenuated apices, 
pretty regularly forked throughout, and having a well-defined general out- 
line, the branches, when displayed, lying in a semicircle, all their tips of 
nearly equal length. The lower axils are near together and very patent, 
the upper more distant and acute; the ultimate divisions are usually long, 
filiform, and very acute. Cystocurps are abundantly scattered along the 
branches; theysare sometimes opposite, more usually secund, very promi- 
nent, subglobose or ovate. edraspores cruciate, immersed in the frond. 
The colour is a dark, somewhat purplish red, becoming darker in drying. 
