368 feu-Florideae, Dicranemene, DicraneiHa.. 



Specics a genere excliulendao. 



17. Mychodea polyacantha Crouan in Maze Alg. Guadel. p. 164, 

 Murray Alg. West Ind. Region p. 14 cst Eucheunia Gelidium. 



IS. Mychodea Schrammii Crouan in Maze et Schr. Alg. Guadel. 

 p. 103, Murray Alg. West Ind. Region p. 14, cst Eucheuma 

 Sclirammii. 



li). Acanthococcus adelphinus Mont. Cfr. speciem Ochfodis. 



Subfam. VI. DICRANEME.E Schmitz. 



Dlcrnnemca' Schmitz [1880] Syst. Uebcrs. Florid. p. 7, Scliraitz et Hnuptn. in 

 Engl. & Praiitl Natiirj. Pdanzenfam. 142 (1896) p. 362. 



Frons teretiuscula, repetito furcatim ramosa, structuram fere omni- 

 no cellulosam praebens. Ceterum fere ut in Mj/chodecBis. 



DICRANEMA Sond. [1845] in Botanisclie Zeitung 1845, p. 56 (Etym. 

 dicranos biceps furca et nem,a filum), J. Ag. Sp. II, pag. 633, 

 Epicr. p. 434, Sclimitz et Hauptfl. in Engl. & Prantl Natiir]. Pflan- 

 zenfam. 142 (1896) p. 362, Cystoclonii, Sphwrococci, Gracilaria^, 

 Hypnece sp. auct. — Frons teretiuscula, repetite furcatim ramosa, 

 fere omnino parenchymatica, stratu medullari denso lilis angustis 

 articulatis longitudinalibus, intermedio cellulis rotundatis, interio- 

 ribus majoril)us, corticali cellulis verticalibus subseriatis dense 

 confertis minutis constante. Cystocarpia prope apices ramorum evo- 

 luta et hic lateraliter inflata subhemisph?erlca, intra pericarpium 

 cellulosum, demum carpostomio apertum, nucleum subsimplicem 

 foventia; fila carposporifera a placenta cellulosa, strato medullari 

 quasi lateraliter imposita, adscendente circumcirca a vertice et la- 

 teribus exeuntia, ima basi fasciculatim conjuncta, dein tota libera 

 subsimplicia. supra stipitem tenuem articulatum clavati, in articulo 

 supremo carposporas obovato-o])longas demum rotundatas foventia. 

 Antheridia csBspitulos parvos efficientia, strato corticali immersa 

 (in eodem individuo [an semper?] ac cystocarpia prsesentia). Tetra- 

 sporangia in apicibus inflatis ramorum aggregata, int^r fila corti- 

 calia valde evoluta nidulantia, oblonga, zonatim divisa. 



Obs. Frondcs fero flliformes, decomposito-dichotompe, axillis acu- 

 tis patentibus, purpurese, subcartilaginese. Fructus utriusque ge- 

 neris in ramulis terininalibus. Cystocarpia infra apiccm subspathu- 



