CLADOPHORACEAE. 497 



in the cell walls a peculiar filamentous fungus, to which E. P. Wright has 

 restricted the generic name Blodgettia, with the new &-pecifie name Bornetii. 

 Whether this algicolous fungus is to be considered a lichenogenous one or 

 simply a parasite is possibly a matter of definition of terms, though it seems 

 to conform better to the usual conception of a parasite. The cell walls of the 

 host are commonly more rigid and the branches more commonly have a septum 

 at the base than is the case in Cladophoropsis memhranacca. The combina- 

 tion of fungus and alga was apparently first described by Kiitzing under the 

 name Cladophora fuliginosa, a name recently revived by Collins and by 

 B^rgesen. (Phyc. Bor.-Am. SOIS.) 



Cladophora catenifera Kiitz. was originally described from the Cape of 

 Good Hope. The name has been applied by Collins to a Bermudian plant 

 that is somewhat similar, but has shorter, more fasciculate-divaricate ramuli. 

 It is one of the largest and coarsest of the Cladophoras, In a sheltered place 

 in Red Bay, St. David's Island, it forms stiff erect dark green tufts that are 

 sometimes nearly a foot and a half high. 



Cladophora crystallina (Roth) Kiitz. is the name under which Collins 

 has distributed (Phyc. Bor.-Am. 1865) Bermudian specimens from pools on 

 the South Shore and at Harrington Sound. The plant has fine soft copiously 

 branched filaments and has a glossy appearance on being pressed and dried. 



Cladophora Howei Collins forms compact yellowish green mats or tufts 

 about half an inch high on rocks in tide pools on Gibbet Island. Endemic. 



Cladophora fracta (Vahl) Kiitz. is a widely distributed an<l variable 

 species of fresh or brackish water. It has been found by Hervey in a 

 reservoir near Spanish Rock. (Phye. Bor.-Am. 2013.) 



Cladophora corallicola B^rg. is a name that has been adopted by the 

 editors of the Phyeotheea Boreali-Americana {2010) for a plant collected at 

 Tucker's Town by Dr. Hervey. The name was first proposed for a Danish 

 West Indian plant, dredged from a depth of about 100 feet, where it formed 

 a dense covering on dead corals and shells. 



Cladophora crispula Tickers, was originally described from Barbados, 

 where it forms dense, closely interwoven, spongy, olive-green or dusky green 

 masses, lobes of which sometimes grow out as irregular rope-like strands an 

 inch or so long. Under a lens the ultimate branchlets are seen to be curved 

 and inflexed, giving a densely crisped or curled appearance to the matted sur- 

 face. The name has been applied in the Phyeotheea Boreali-Americana 

 {2011) to a lighter-colored, much less crisped and spongy plant from Harring- 

 ton Sound. 



Cladophora utriculosa Kiitz. is a name under which a plant from Harring- 

 ton Sound has been distributed in the Phyeotheea Boreali-Americana {£01 f). 

 The cells of this Bermudian plant, however, seem to be on the average much 

 shorter than those of the original plant from the Adriatic Sea. It is very 

 difficult, if not impossible, to define the limits of currently recognized species 

 of Cladophora and the interpretation of the species and their range of varia- 



33 



