126 Rhodora [Juwk 



Farlow, N. E. Marine Algae, p. 53. 



C laetevirens var. glomerata Le Jolis, Alg. Mar. Cherb. p. 82. 



C. utriculosa var. laelevirens Hauck, Deutsch. Meeresalg., p. 455. 



Conferva /aetevirens Dillwyn, British Confervae, PI. XLVI1I, p. 66. 



Filaments 50-150 fx diam., rigid, yellow green, much branched; 

 branches erect, often opposite; ultimate ramuli short, obtuse or 

 subacute, densely fastigiate at the tips of the branches ; fronds up 

 to 20 cm. long, articulations of main branches 6, of ramuli 3 diam- 

 eters. 



A stout and rather coarse species, perhaps best distinguished by 

 the dense tufts at the ends of the branches, with blunt ramuli not 

 much smaller than the branches. It is found from Nahant north, 

 in exposed lower pools or below low water mark, but does not seem 

 to be very common. Battered forms of C. gracilis or C. hirta are 

 not easily distinguished from it, though when in good condition 

 there is little clanger of their being confused. 



C. Hutchinsiae (Dillw.) Kiitz. 



Kiitzing, Phyc. Germ., p. 210. 



Harvey, Phyc. Brit., PI. CXXIV. 



Farlow, N. E. Marine Algae, p. 53. 



Hauck, Deutsch. Meeresalg., p. 453. 



De Toni, Syll. Alg., Vol. p. 314. 



Conferva Ifutchinsiae Dillwyn, Brit. Confervae, p. 65, PI. CIX. 



Frond rather glaucous green, up to 40 cm. high; filaments 120- 

 300 /1 diameter, stiff, fiexuous, sparingly branched; ultimate ramuli 

 few, secund, blunt, constricted at the nodes, articulations 2-3 diam. 



This species has considerably larger filaments than any other of 

 the subgenus Eucladophora on our coast, and is not likely to be 

 mistaken. There does not appear to be any authentic specimen of 

 the type from New England, the one quoted by Farlow, N. E. 

 Marine Algae, proving to be wrongly mnrked, and to belong to 

 California. But it has been collected at Atlantic City, N. J., agree- 

 ing very well with the specimens distributed in the McCalla's Algae 

 Hibernicae, No. 28. and Wyatt's Algae Danmonienses, No. 226, the 

 main filaments equalling 300 fj. diam.. though not so densely branched 

 as some of the French specimens. 



From its occurrence on the New Jersey coast, there is reason to 

 expect it in New England. 



C. Httchinsiae var. distans (Ag.) Kiitz. 

 Kiitzing, Sp. Alg., p. 392. 

 Hauck, Deutsch. Meeresalg.. p. 453. 

 De Toni, Syll. Alg, Vol. I, p. 315. 

 C. diffusa Harv., Phvc. Brit., PI. CXXX; Nereis Bor.-Am.. part 



'3, P- 83. 



Conferva distant Agardh, Syst. Alg., p. 120, 1S24. 



Conferva diffusa Dillwyn, British Confervae, PI. XXI ; not of Roth. 



