CONFERVACEJh 
79 
filaments very slender, much and irregularly branched, the penultimate branches very 
long, filiform, flexuous, simple, set with alternate or secund, short, erecto-patent ramuli, 
some of which are simple and spine-like, others pectinated on their upper side ; articu- 
lations filled with dense endochrome, in the branches 2-3 times, in the ramuli about 
twice as long as broad, cylindrical, not contracted at the nodes. (Tab. XLY. B.) 
Hab. Elsinborough, Delaware, Miss E. C. Morris, (v. s. in Herb. T.C.D.) 
Tufts dense, 6-8 inches in length. Filaments inextricably bundled together, very 
slender, much branched, the ramification of the principal divisions not determinable 
from dried specimens. The penultimate branches which float out from the somewhat 
rope-like tufts are generally simple for an inch or two in length, or the longer ones are 
furnished with similar simple branches ; and all are beset with short, erecto-patent 
ramuli. Some of the ramuli are simple, of 3-4 cells ; others emit similar ramuli 
on their upper side. The membrane of the cell-wall is very thick and tough, and 
the endochrome peculiarly firm, recovering its form well on being moistened after 
having been dried. The nodes are not contracted, and the internodes or articulations 
rarely exceed thrice their diameter in length, and often do not reach that dimension. 
The colour is a full dark-green, somewhat olivaceous when dried. Specimens adhere 
closely to paper. 
I have as yet only received this plant from Miss Morris. It differs in several 
respects from any that I now remember. 
Plate XLY. B. Cladophora Morrisice ; Fig. 1 , the natural size. Fig.' 3, 
portion of a branch : and Fig. 2, a ramulus of the same; magnified. 
1. Cladophora refracta , Both. ; filaments very slender, rather densely tufted, bright 
green, membranaceous (not lubricous), excessively branched ; secondary branches 
spreading on all sides, repeatedly divided and very patent, densely set with short, often 
opposite, recurved or squarrose branchlets, which are pectinate on the inner face with 
patent, simple or forked ramuli ; articulations of the branches 2-4 times of the ramuli 
about twice as long as broad. Both. Cat. 2, p. 193. Alg. Syst. p. 114. Wyatt, 
Alg. Danm. Mo. 228. Harv. Phyc. Brit. t. 24. Kiitz. Sp. Alg. p. 398. 
Hab. On rocky coasts, in tide pools, &c. Rhode Island, Mr. Olney , Mr. G. Hunt. 
Boston Bay, Dr. A. Gray. Portsmouth, X. H., Dr. Durkee. New York, Messrs. 
Calverley , Walters , and Pike. Newport, R. I., Professor Bailey. Seaconot, Mr. 
Congdon. Charleston, S. C., Professor Gibbes. (v. v.) 
Tufts 2-3 inches long, feathery, rather diffuse, the nuJin filaments sometimes inter- 
laced in rope-like bundles. Filaments more slender than human hair, rather rigid, tough, 
excessively branched, all the divisions patent or divaricate. The penultimate ramuli 
are especially reflexed or refracted, and often opposite ; their ultimate divisions are 
