Ser. CHi,oiiosPERMEiE. Fam. Confervacea. 



Plate LXXVIII. 



CLADOPHORA YALONIOIDES, Sond. 



Gen. Chau. Filaments tufted, articulate, uniform, branched. Articulations 

 filled with green granular endochrome, which is changed at maturity 

 into zoospores. — Cladophoka {Kiitz.), from K\aSo<i, a branch, and 

 (jjopeco, to hear. 



Tila ccespitosa, articulata, ramosa. Articuli endochromate viridi grumoso demum 

 in zoosporas miitato repleti. 



Cladophoua valonioides ; densely tufted, bright-green; filaments ultra- 

 capillary, membranaceous, irregularly decompound, subdicliotomous, 

 much branched ; lesser branches and ramuU often opposite or ternate, 

 the ultimate ones subfasciculate or pectinate ; axils acute ; apices 

 very obtuse ; articulations in the branches 6-8 times, in the ramuli 

 4-5 tiines as long as broad, constricted at the nodes, and filled with 

 endochrome, 



C. valonioides ; ceespitosa, latevirens ; Jills uUra-capillaribus membranaceis 

 vage deconipositis dichotomlwe ramoslssimls ; ramis minoribus ramulisque 

 sape opposUis v. temis, ultlmis v. fascicidatis v. pectinato-secundis ; axillis 

 acutis apicibmqtie obtiisissimls ; articid'is ramorum diametro %-%-plo ramulo- 

 rum 4i-5-plo longloribus, endochromate repletis ; genicnUs angnstis consiriclis. 



Cladophora valonioides, Sond. PL Preiss. v. 2. p. 149. Harv. Alg.Austr. 

 Exsic. n. 587. Kiitz. Sp. A.lg. p. 391. 



Hab. Swan Eiver, Preiss, W. H. K., G. Clifton, etc. King George's 



Sound, W.H.H. 

 Geogr. DiSTR. West Australia ; common. 



Descr. Filaments densely tufted, 3-8 inches hif>-h or more, twice as thick as 

 human hair, very much branched from the base in an irregularly dichoto- 

 raous or alternate manner. The larger branches sometimes repeatedly di- 

 vide dichotomously, and sometimes are long and virgate, set at short in- 

 tervals with small multifid branches. The lesser branches and ramuli are 

 frequently opposite, ternate, or sometimes quaternate, all erecto-patent ; in 

 the upper part of the plant they are frequently crowded and almost fascicled, 

 but are sometimes distant, either alternate or secund or pectinated. The 

 joints in the larger branches are 6-8 times as long as broad, or eveu longer ; 

 iu the lesser branches and ramuli they are pretty uniformly 3-4-5 times 

 as long as broad ; the ultimate ones are ellipsoid and very blunt. All the 

 nodes are constricted and very narrow ; and the cell is filled with bright- 

 green endochrome, which partly recovers its form when moistened. The 

 substance is membranous, not very soft; and the plant, except when young, 

 does not strongly adhere to paper in drying. The colour at first is a bril- 



