Ser. Chlokosperme2E. Fam. Confervacea. 



Plate XLVII. 



CLADOPHORA FEREDAYI, Han. 



Gen. Char. Filaments tufted, articulated, uniform, branched. Articula- 

 tions filled with green, granular endochrorne, which is changed at 

 maturity into zoospores. — Cladophora [Kiitz.), from Kkahos, a branch, 

 and (fiopeo), to bear. 



Fila ccespitosa, articulata, ratnosa. Articuli endochromate viridi grumoso de- 

 mum in zoosporas mutato repleti. 



Cladophora Feredayi; bright-green, rather rigid (glassy when dry), with 

 a long stipes ; filaments very long, setaceous, angularly-flexuous, di- 

 trichotomously decompound and alternately branched, the branches 

 free or interwoven, fiexuous, repeatedly divided; ultimate ramuli 

 fasciculate ; articulations of the branches very long (20-30 times 

 as long as broad), cylindrical ; those of the ramuli 5-6 times their 

 diameter in length, contracted at the nodes. 



C. Feredavi ; longiuscule stipitata, Icetevirens, siccitate vitreo-nitens, rigidi- 

 uscida ; jilis longissimis setaceis angulatimfiexaosis decomposite di-trichotomis 

 et alterne ramosis, ramis nunc discretis nunc intertexlis fiexnosis pluries divisis, 

 ramulis ultimis dense fascicidatis ; articulis ramorum longissime cylindraceis 

 diametro 20-30-^fo longioribus, ramulorum ad genicula contracts diametro 

 5-6-plo longioribus. 



Cladophora Feredayi, Harv. Alg. Austr. Exsic. n. 584. 



Hab. Cast ashore from deep water. Georgetown, Tasmania, Rev. J. Fere- 

 day, W. H. H., etc. Port Phillip, Mr. Baines, W. H. H., etc. 

 Geogr. Distr. Both shores of Bass's Straits. 



Descr. Root a small disc. Filaments in dense tufts or bundles, 12-20 inches 

 long or more, with the basal cell (or stipes) rising without dissepiment or 

 branch to the height of nearly two inches, then three-forked, and after- 

 wards repeatedly di-trichotomous and irregularly multipartite. The prin- 

 cipal branches are angularly bent, elongate, and set with short lateral 

 branches, which are also patent and fiexuous. All the smaller branches 

 (except in denuded specimens) bear dense tufts of short setaceous ramuli, 

 two or three lines in length, and of a deeper green than the rest of the 

 filament. The articulations in the larger branches are of extraordinary 

 length, the space between each ramification, which is often 1| inches, and 

 seldom much under 1 inch, being occupied by a single articulation or cylin- 

 drical cell : they then vary in length from 20-30 to 50-60 times their own 

 diameter. The articulations of the smaller branches are much shorter, and 

 those of the ramuli are of moderate length, and much contracted at the dis- 

 sepiments. The terminal cell is subacute. The colour is a full grass-green, 

 brilliant in the fresh plant, but paler in the dry state, when the membrane 



