354 Eu-Floridese, Solicricae, Erythrocloiiiura. 



cellulis interioribus rotundato-angulatis exterioribusque minoribus, 

 nunc in fila verticalia evolutis constituto. Cystocarpia intra peri- 

 carpium subproprium, carpostomio demum apertum, nucleum com- 

 posituni, plexu densiore filorum anastomosantium et cellularum 

 concentrice ambientium cinctum, foventia; nucleoli circa axilem 

 tubum placontarem radiatim dispositi, columnis filorum steriliuni 

 a placenta ad ambientem plexum excurrentibus sejuncti, filis car- 

 posporiferis inferne sul)dichotomis articulatis, superne clavato-ob- 

 ovatis constituti; carposporae in articulis superioribus incrassatis 

 breve catenatae, sine ordine conspicuo conglobatoe, rotundato-angu- 

 latne, quasi muco cohibitae. Tetrasporangia sparsa, oblonga, zonatim 

 divisa. 



Oht!. Genus hucusque amplectitur tantum species in oceano Pa- 

 cillco littora Novse HoIIandi^ inhabitantes, hinc ab Areschougia, 

 illinc a Rhabdonia caute dignoscendum. 



Siibgen. I. Axosiphon (Arescli.) J. Ag. Epicr. p. 178; fronde teretiuscula, mo- 

 uiliformiter constricta, demum inferne plus miuus caulescente, verticilla- 

 tim ad stricturas ramosa, ramis conformibus. 



1. Erythroclonium angustatum Sond. in Linna3a XXV, p. 093, Harv. 67i 

 Alg. Austral. exsicc. n. 394, Kuetz. Tab. Phyc. XIX, tab. 37, J. Ag. 

 Epicr. p. 278, Anal. algol. cont. I (1894), p. 123, t. II, f. 12, Axo- 

 siphon verticillatiis Aresch. Phyc. extraeurop. p, 22. — Fronde 

 fere tota stricturis regularibus articulata, ad stricturas verticillatiiu 

 ramosa, ramis conformibus, duobus verticilli cujus^iue majoril)Us 

 quasi regulariter deliquescenti-dichotoma corymboso-fastigiata, ar- 

 ticulis anguste linearibus utrinque pariter attenuatis, terminalibus 

 elongatis sgepius diametro 4-6plo longioribus. 



Ilah. ad littus Novse Hollandiae australis (Sonder). — Cysto- 

 carpii placenta firma et valida forsan transforma.tione tubi axilis 

 formata, quoquoversum emittens fila carposporifcra clavneformia, 

 simplicia (nisi infima basi subdivisa) evidentius articulata, articulis 

 infimis tenuioribus nempe minus maturis. supremis multo cras- 

 sioribus, carposporas, ut videtur singulas rotundatas, formantibus. 

 Nuclei structura cum Erythrocl07%io Sonderi proxime congruens. 



2. Erythroclonium Sonderi Harv. Alg. Austral. exsic. n. 391, Phyc. irri 

 Austral. tab. 86, J. Ag. Epicr. p. 278, Rhahdonia Sonderi Harv. 



in Trans. Irish Acad. 22, p. 554 non Uhahdonia Sonderi J. Ag. 

 — Frondc fere tota stricturis regularibus articulata. ad stricturas 

 verticillatim ramosa, ramis conformibus, intermedio verticilli cujus- 



