262 FLORA OP NEW ZEALAND, \_Alg<S. 



Hab. In running streams of fresh water, Canterbury Plains, Lyall. New Zealand, Colenso. (Europe 

 and North America.) 



TeibeIIL CONFEBVACEJS. 



Gen. XCIX. CLADOPHOEA, Kiitz. 



(Kiitz. Phyc. Gen. p. 269. Sp. Alg. p. 387. Harv. Phyc. Brit.) 



1. Cladophora herpestica, Kiitz., Sp. Alg. p. 415. Conferva herpestica, Mont. Toy. Pole Sud, Crypt, 

 p. 6. Hook.fil. et Harv. in Lond. J. Bot. v. 4. p. 551. 



Hab. Bay of Islands, Hombron, J. D. H. Cape Kidnapper, Colenso. 



2. Cladophora Lyallii, Harv. ; densissime pulvinata, effusa, fills vix uncialibus crassissimis rigidis sub- 

 fastigiatis intricatis flexuosis vage ramosis, ramis alternis secundisve nunc oppositis patentibus, ramulis 

 paucis ssepe secundis, apicibus obtusis, articulis diametro sesquilongioribus ad genicula constrictis. (Tab. 

 CXXI. C.) 



Hab. South Island, Lyall. 



Forming widely effused, very dense, mat-like tufts, composed of rigid, very thick, interwoven filaments, less 

 than an inch in length, decumbent at the base, then erect. These filaments are very irregularly branched ; the 

 branches patent, very frequently secund, sometimes opposite, or alternate. Hamuli few, of three or four articulations. 

 Articulations constricted at the very narrow dissepiments, about once and a half as long as broad in all parts of the 

 frond. Apices very obtuse. Colour a pale yellowish-green. — It does not adhere to paper in drying. — Plate CXXI. C. 

 Pig. 1, part of a mat of Cladophora Lyallii, natural size; 3, part of a branching filament, magnified; 3, apex of a 

 ramulus, highly magnified. 



3. Cladophora pellucida, Kiitz., Sp. Alg. p. 390. Harv. Phyc. Brit. I. 174. Cladophora catenifera, 

 Kg. I. c. Conferva pellucida, Billw. Conf. I. 90. 



Hab. Waitemata Harbour, Lyall. (Native of Europe, and of the Cape of Good Hope.) 

 Of this plant we have only seen a fragment about 1 inch in length, but closely agreeing with some of our British 

 specimeus of this strongly marked species. We are not disposed to separate the Cape of Good Hope specimens on 

 which Kiitzing founds his ft catenifera.— -Any one conversant with ft pellucida must know that, though true to cer- 

 tain broadly marked characters, it puts on several forms, and varies, in the same locality, in diameter and in the 

 comparative length of the articulations. 



4. Cladophora verticillala, Hook. fil. et Harv., Fl. Ant. v. I. p. 193. Kiitz. Sp. Alg. p. 388. 

 Hab. In a cave, Port William, Lyall. (Native of the Auckland Islands.) 



These specimeus are fully eight inches long. In other respects they agree with the Auckland Islands speci- 

 mens formerly described. 



5. Cladophora Colensoi, Harv.; filis nigro-viridibus rigidis gracilibus flexuosis e basi decompositis, 

 ramis elongatis curvatis parum divisis basi nudis apice ramulosis, ramulis sajpisshne secundis appressis ab- 

 breviatis vel longiusculis, articulis endochromate denso repletis diametro 3-4-plo longioribus. 



Hab. Hawke's Bay, rare, Colenso. 



Filaments 2 inches high, not densely tufted, nor very much branched. Branches springing a short distance 

 from the base, numerous, but little divided, often quite simple, flexuous, with a few lateral branches, and more or 

 less clothed with short, secund, very erect, or close-pressed ramuli. Articulations nearly of the same length in all 

 parts of the frond, cylindrical, not contracted at the joints, filled with endochrome, which recovers its form on re- 

 moistening ; the cell-walls thick and rigid. Colour a dark green. — It does not adhere to paper in drying. It is 

 allied to ft rupestris, but more slender and flexuous. 



