CONFERVACEiE. 
8u 
either simple or forked. The colour is a brilliant green, but it does not well preserve 
in drying, in which 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 exfceedingly 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. FI. Angl. p. 595. 
E. Bot. t. 2327. Wyatt, Alg. Danm. Ho. 96. Harv. Phyc. Brit. t. 275. 
Hab. On rocks and algae, between tide marks. Staten Island, Dr. Torrey. Beesley’s 
Point, Mr. Ashmead (64, 65, 66). New York Bay, Messrs. Calverley , Walters , Sfc. 
(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. 
13. Cladophora Rudolphiana, 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. Kutz. Sp. Alg. 
p. 404. 
Hab. 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, 
