80 CONFERVACE^. 



either simple or forked. The colour is a brilliant green, but it does not well preserve 

 in drying, in whicli state the specimen is without gloss and generally pale. The 

 endochrome is generally dissipated in drying, and does not, in ordinary cases, recover its 

 form when the frond is remoistened ; sometimes, however, the endochrome remains. 



A beautiful species, and tolerably easily known. The American specimens are very 

 similar to our West of Ireland plant, but more robust than those from the South Coast 

 of England. 



12. Cladophora albida, Huds.; filaments exceedingly slender, flaccid, but not gela- 

 tinous, pale green, forming dense, silky or somewhat spongy, soft, intricate tufts, very 

 much branched ; branches zigzag, their divisions very patent, the lesser branches very 

 frequently opposite, and nearly horizontal ; ramuli alternate, opposite or secund, patent 

 or divaricating ; articulations 3-5 times as long as broad. Huds. Fl. Angl. p. 595. 

 E. Bot. t. 2327. Wyatt, Alg. Danm. No. 96. Harv. Phyc. Brit. t. 275. 



Hab. On rocks and algte, between tide marks. Staten Island, Dr. Torrey. Beesley's 

 Point, Mr. Ashmead (64, 65, 66). New York Bay, Messrs. Calverley, Walters, S,'C. 

 (v. V.) 



Tufts 6-8 inches long, very dense and soft, and somewhat intricate or woven together, 

 occasionally feathering and opening out freely. Filaments excessively slender and very 

 much branched, and so interwoven that it is impossible to trace the branching. In the 

 American specimens the main branches are very flexuous, angularly bent from side to 

 side, and very much divided, all the divisions squarrose or divaricating. The penulti- 

 mate branches, which are nearly horizontally patent, are generally opposite, but three or 

 more sometimes issue from the same point ; the ultimate ramuli are scattered, either 

 alternate or secund. The nodes are somewhat contracted ; the cell-wall thin, and the 

 endochrome pale and watery. When dry the whole plant frequently becomes a dull 

 greenish white. It does not strongly adhere to paper. 



1 3. Cladophora Budolphiana, Ag. ; filaments very long, exceedingly slender, flexuous, 

 sub-gelatinous, much branched, bright yellow-green, inextricable ; branches di-trichoto- 

 mous or irregular ; ultimate ramuli pectinate, secund, very long, and much attenuated ; 

 articulations of the main branches many times longer than broad, here and there 

 swollen, their granular endochrome somewhat spiral ; those of the ramuli 6-10 times as 

 long as broad. Ag. Bot. Zeit. 10, p. 636. Harv. Phyc. Brit. t. 86. Kiitz. Sp. Alg. 

 p. 404. 



IIab. Jackson Ferry, N.Y., Mr. Walters, (v. v.) 



A specimen sent by Mr. Walters agrees pretty well with the Irish specimens figured 

 in Phyc. Brit. The filaments are 4-5 inches long, soft, and somewhat gelatinous, 

 closely adhering to paper, intricately interbranched, very flexuous, zigzag, and much 

 branched. The branches are patent, sometimes opposite, mostly alternate or scattered. 



