.] FLORA OP NEW ZEALAND. 265 



Hab. Sea-shores, with the preceding, from which it only differs in having an unbranched frond. 

 Generally diffused.) 



3. Enteromorpha clathrata, var. ramulosa. E. ramulosa, Hook. Br. Fl. v. 2. p. 315. Han. Phyc. 

 Brit. I. 245. 



Hab. Otago, Lyall. (Europe, etc.) 



Gen. CV. ULVA, Ag. 

 (Ag. Syst. xxxii. Grev. Alg. Brit. p. 171. Harv. Phyc. Brit. Ulva, Phycoseris, et Prasiola, Kiitz. Sp. Alg. 



p. 472, etc.) 



1. Ulva (Phycoseris) lobaia, Kiitz., Sp.Alg.p. 477. {An Phycoseris rigida ? Kg. Ulva rigida ? Ag.) 

 Hab. Sea-shores, Colenso. (Cape of Good Hope.) 



This is perhaps only a variety of TJ. rigida, as we had at first named our specimens. We have very similar 

 ones from the Cape of Good Hope, which appear to be referable to Kutzing's var. Africana of his P. lobata, to which 

 therefore we refer our plant. 



2. Ulva latissima, Linn., Fl. Suec. p. 438. Ag. Sp. Alg. v. 1. p. 407. Harv. Phyc. Brit. t. 171. 

 Kiitz. Sp. Alg. p. 474. 



Hab. Sea-shores, common. (Generally diffused.) 



3. Ulva bullosa? Both, Cat. Bot. v. 3. p. 329. Grev. Alg. Brit. p. 174. 

 Hab. On stones, under water, Colenso. (Europe.) 



A few young specimens, which seem to belong to this or an allied species. 



4. Ulva (Prasiola) crispa, Lightf., Fl. Scot. p. 972. Ag. Sp. Alg. v. 1. p. 416. Hook. fil. et Han. 

 Fl. Ant. v. 2. p. 498. 



Hab. Port Cooper, Lyall. (Generally diffused.) 



Tribe V. OSCIZLATORIEJS. 



Gen. CVI. CALOTHEIX, Ag. 

 (Ag. Syst. xxiv. Harv. Phyc. Brit. Endl. 3rd Suppl. p. 13.) 

 1. Calothrix scopulorum, Ag., Syst. p. 70. Harv. Phyc. Brit. t. 58 B. Schizosiphon scopulorum, 

 Kiitz. Sp. Alg. p. 329. 



Hab. Sea-shores, on rocks and mud, near high- water mark, common, Colenso. (Generally diffused.) 



Gen. GVII. OSCILLATOEIA, FmcL 



(Vauch. Conf. t. IB. Ag. Syst. xxiv. Harv. Phyc. Brit. Oscillaria, Bosc. Endl. 3rd Suppl. Kiitz. Sp. Alg, 



p. 237.) 



1. Oscillatoria ? 



Mr. Colenso sends us a species of this genus, which we have not sufficient specimens to determine. 



Gen. CVIII. TOLTPOTHEIX, Kiitz. 

 1. Tolypothrix irregularis, Berk. ; filis seruginosis irregularibus hie illic constrictis 1. torulosis ssepe 

 attenuatis, annulis angustissimis. 



Hab. Amongst patches of VaucJieria, on tidal mud, Colenso. 



Threads very irregular, nVrsi'so mcn across, compressed, sometimes constricted, sometimes torulose, often 



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