Eii-Florido.r, Sciiini(M>, Soiimin. 103 



Frons ryliii(lnu'o;i, diciiotoiii;!,, immerse costnta, ^'oliitiiioso-mem- 

 biMiiiice;!,, stndis IVre tril)iis coiitext;!. Cystoc;irj)ia iiirni str;itum pe- 

 ri[)lieri('um suspeiis;i. e;i,rpostomio iiistructii. Tetr;ispor;i,ii;^i;i liucus(j[ue 

 iguot:i. 



Conspectus generum. 



Scinaia Biv. — Stratus interior eorticis Inxissimus, exterior (lensiis et stratnm 



superflcialem aiit qunsi suiierflcMalom celiularum hyalinariim arcte conti- 



guarum i^nebens. 

 Gloiophloea J. Ag. — Stratus interior corticis laxissimus, exterior densiusculus, 



fllis corticalibus extrorsum repetite furcato-ramosis, breve articulatis, con- 



fertis, muco ambiente cohibitis. 



SCINAIA Rivona [1832] in Iride (P:ilermo 1822) com icone (Etym. 

 a cl. D. Scina), J. Ag. Sp. II, p. 420, Epicr. p. 510, Morph. Florid. 

 p. 61, Ardiss. Phyc. Med. I, p. 268, Schmitz Uehers. Florid. p. 4, 

 Ginnania Mont. [1836] Fl. Canar. p. 162, Kuetz. Sp. p. 715, Phyc. 

 frener. t. 73, f. I, Myelomium Kuetz. [1843] Phyc. gener. p. 393, 

 Halymenicu, Ulim, Fuci, Sehestedticr, Coral/opsidis et Dwnonticu 

 sp. auct. — Frons cylindracea, gohitinoso-memhranacea, dichotoma, 

 immerse subcostat;i, stratis fere tribus contexta: costa filis augustis 

 longitudinalibus densioribus oblique in fila laxiora dichotoma strati 

 medii excurrentibus, peripherico strato cellulis rotundato-angulatis, 

 in membranam unistratosam arcte concretis, constante. Cystocarpia 

 infra stratum periphericum suspensa, nucleo globoso filis ;imbien- 

 tibus densissime intertextis clauso, c:irpostomium versus aperto, 

 constituta; fila carposporifera plurima, a placentari plexu nuclei ex- 

 trorsum radiantia, fasciculato-ramosa, submoniliformiter articulata, 

 intra articulos carposporas singulas rotundatas genenxntia. Tetra- 

 sporangia hucusque ignota. Antheridia e cellulis minutissimis ad 

 superflciem frondis evolutis constituta. 



Ohs. Frondes (in Scinaia farcellata, quge typica generis) tere- 

 tiuscuhne, dichotomo-fastigiatne, sacculos cylindraceos, quasi succo 

 interiore distentos, referentes; dissect;Te costam et fila a costa egre- 

 dientia, membranam exteriorem sustinentia, monstrantes. Costa filis 

 elongiitis, admodum tenuibus, dense stipatis longitudinalibus con- 

 stat. Ha3c fila abeunt cursu obIi(]^uo et sensim horizont;iIi versus 

 peripheriam, stratum intormedium multo laxius efficientia; sunt 

 articulata, articulis ob tenuitatem haud facile conspiciendis, dicho- 

 toma, dichotomiis superficiem versus sensim densioribus ; ex his 

 filis dichotomis retrorsum demittuntur ejusmodi fila, quse decur- 

 rentia axin cingunt. CelluhTe strati peripherici paucis seriebus di- 



