Ser. RHoposPERMEA. Fam. Spherococcoidee. 
Puate CCLX. 
GRACILARIA RAMALINA, Zar. 
Guy. 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 ovate spores ar- 
ranged in spore-threads issuing from a basal placenta ; 2, ¢etraspores 
cruciate or tripartite, dispersed among the surface-cellules of the 
branches and ramulii—Gracriaria (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 maynis rotundato-angulatis, 
exterioribus 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 
Joventia ; 2, tetraspore sparse, cruciatim divise. 
Gracitaria Famalina ; frond rosy or pale, plano-compressed, distichous, 
decompoundly subbipinnate ; pinnee and pinnules horizontally pa- 
tent, opposite or alternate, the pinnules filiform, very long, divaricate, 
acute ; cystocarps conical, lateral, often secund ; tetraspores scattered. 
G. Ramalina ; fronde rosea v. pallida plano-compressa disticha, decomposite sub- 
bipinnata, pinnis pinnulisque horizontaliter patentibus oppositis alternisque, 
pinnulis filiformibus longissimis divaricatis acutis, cystocarpiis conoideis 
lateralibus sepius secundis, tetrasporis sparsis. 
Hymenociapia Ramalina, Harv. in Trans. R. I. Acad.v. 22. p. 553. Haro. 
Alg. Austr. No. 321. 
Has. King George’s Sound, IV. H. H. 
Groer. Distr. South-west of New Holland. 
Descr. Root discoid. Frond 12 inches long, or more, and as much in the ex- 
pansion of the branches. ‘The main stem is either simple or once forked, 
2-3 lines wide, and very strongly compressed, or nearly flat. It is set 
throughout its length with distichous, very patent or divaricate, lateral 
branches and branchlets, closely placed, often only 1-2 lines apart, and of 
various lengths intermixed. The larger, or pinne, are 2-6 inches long, 
flattened like the main stem, and closely pinnulated once or twice. The 
smaller are linear-filiform, simple, or here and there ramuliferous, or some- 
times pinnulated. The apices are acute. Cys/ocarps prominent, conical, 
