Ceramium. CERAMiEiE. 119 



ferioros valde eloiignli, cliamotro iiuilto longiores, suporiores scnsim bre- 

 viores-, ramulorum brevissimi diametro opquales. Genicula elevata, cellu- 

 lis relativo magnis corticata, iiitcnse purpurea. Sphoerospora} in ramubs 

 intcralihus evolutse, sparsfe, extra genicula omnino emergontes, singulae. 

 Favcllae in ramulis ramisve minoribus tcrminalcs gcmina*, ramulis umbol- 

 latis 5 — 6 involucraticj ramuli involucraiitos patontes, omnos forcipali, 

 ipsam favellam longitudinc triplo supcrantes. Chartoc arctissimo ad- 

 haeret. 



Spccies ut vidctur sat distincta, eximia icoiie a Ilarvcy illustrata, 

 teniiitate ct habitu jam cognosccnda. Rami nempe primarii longis arti- 

 culis constiluti, foro toti hyalini, nudo oculo fpgrius observandi; ramuli 

 voro ob gonicula approximata et intonsius colorata conspicui, quasi mom- 

 bra disjuncta plantae dissolutse adparont. Sub lcnte ramuli ob genicula 

 conspicua collulisque magnis corticata monile fere refereutes, peculiarem 

 adspectum quoque prfebcnt. — Hormoceras gracillimum KUtz. 1. c. fide 

 llarv. huc rotuli. Diagnosis vero ab ipso data aliam speciem indicare 

 mihi videtur. 



3. C. FASTiGiATUM (HarD. in Hooh. Journ. Bot. p. 303) frondo ca- 

 pillari rcgiilariter dichotorao-decomposita faslijjiata, se[jmeiifis 

 ereeto-palentibiis, terminalibus forcipatis, articiiiis inferioribus 

 diametro 3 — ipio longioribus, supeiiorum interstitiis subcolo- 

 ratis, spliiierosporis lineam longitudinakMU secus (ilum forman- 

 tibus, ad genicula pluiibus iinilatoralibus promiiientibus, favel- 

 lis ad segmenta sessilibus lateralibus, ramellis involucrantibus 

 favellain vix superantibus simplicibus paucis. 



Ceramium fastigiatum Harv. l. c. Man. p. 99!! 

 Gongroceras fastigiatum liiih. sp. p. 678! 



liab. in Oceano atlantico! mari balticol mediterraneo! et adria- 

 tico (sec. Kiitzing). 



Caespites densi plerumque 2 -3poIlicaros. Frons capillaris a basi ad 

 apicem vix. attenuala, regulariter dichotomo-fasligiata, scgmentis inforne 

 distantioribus superne densioribus. Articuli inferiores hyalini geniculis colo- 

 ratis subelevatis distincti', superiores endochromate rosco colorati, quod in 

 exsiccata planta etiam conspicuum , sa^pius in strias varie contrahiliir. 

 Sphajrosporjc saepe secus totum filum suporius formatae, suprcmis spg- 

 mentis sterilibus, ad geniculum quodque pluros (4 — 6) subemergentes. 

 Planta favellifera gcrit ramulos latcrales sparsos. FavolUc in scgmcnlis 

 lalcrnles, plcnimquc 2—3 adproximatac, singulae involucro fullae, minutac, 

 rutuudatte, diamotium fili, iu quo insidont, vix suporaiitos. Hamuli iii- 

 volucranlcs unilatcrales, ipso segmento frondis fructifero allorum lalus 

 siistinente, 2 — 4, brevissimi, favellam ipsam longitudinc vix superanlcs, 

 simplices, fcre subulali. Substautia flaccida el chartce minus arcte ad- 



