THE GREKN ALGAE OF NORTH AMERICA 341 



ramuli 40 ^ diam., secund, blunt; cells 3-6 diam. long. In 

 warm pools and lagoons. Newfoundland to New Jersey. 



Europe. 



Common in summer in marsh pools and lagoons where the 

 temperature is high and the level varies little ; at first attached, 

 it soon rises to the surface, and ultimately forms a dense felty 

 coating, continuous over large stretches of water, usually mixed 

 with Lvn^ln'ii ncstiiarii and species of Itnteromorpha. It will 

 probably be found to extend in both directions beyond the 

 limits given. Reports of C.fracta from marine stations prob- 

 ably should be referred to this species. 



Var. GI.OMERATA -Thuret in Le Jolis, 1863, p. 61 ; P. B.-A., 

 No. 1027. Ramuli in closely set tufts. Long Island Sound. 



Ei 'trope. 



The tufted ramuli give quite a distinct appearance ; otherwise 

 it is like the type. 



17. 0. SCITULA (Suhr) Kiitzing, 1849, p. 399; 1854, PI. 

 XII, fig. i ; Conferva scitula Suhr, 1831, p. 685 ; 1834, PI. II, 

 fig. 2. Frond small, brownish-green, stiff, densely fascicled ; 

 filaments erect, branching, branches erect, connate at the base, 

 above recurved, with short, secuud ramuli ; lower cells 75-110 /* 

 diam., 2-4 diam. long. W. I. 



The figure by Suhr shows a small, perhaps immature plant 

 with a few simple, slightly recurved branches and many short, 

 secund ramuli ; the figure by Kiitzing, apparently from an older 

 plant, shows rather virgate main axes, densely set with some- 

 what secund branches ; the ramuli at the ends of the branches 

 arranged much as in Ectocarpns fascicnlatus. The cells in the 

 main axes are about 3 diam. long; in the ramuli 1-2 diam. 

 long ; the tips are blunt and rounded. The description above 

 is from Kiitzing, and there is possibly a doubt as to the identity 

 with Suhr's plant; if they are not the same, Kiitzing's had 

 better stand for the species, as Suhr's figures and descriptions 

 are hardly sufficient. There is no recent record of it. 



1 8. C. BRACHYCLONA Montagne in Kiitzing, 1849, p. 394 ; 

 1853, PI. XCVI, fig. 2. Fronds loosely tufted, pale green or 

 yellowish, 10-15 cm. high; filaments di- polychbtomous, 150- 

 250 /u, diam., in main divisions; branches at first distant, then 

 more abundant ; ramuli very short, often of a single cell, alter- 

 nate, opposite or secund, 50-75 n diam.; cells of main divisions 



