23 



tufts and the filaments are very rigid and stiff. The cells are 

 about 200 — 300 n thick and 5 — 6 times as long as broad, with 

 exception of the terminal ones where often, as also pointed out 



Fig. 13 Claclophora fuligixosa Kiitz. 

 Habit of part of a plant with rhizoids. (About 5:1) 



by Harvey, very long cells occur, often a whole branch has no 



cross wall at all. At the base of the branches cross walls always 



occur with exception of the quite young branches, where they 



are sometimes wanting. One specimen from 



White Bay was remarkable by the fact, that 



ramified rhizoids were formed in the apices of 



the long, downward bent branches. Fig. 13 



shows a part of this plant and Fig. 14 



a more magnified rhizoid. This specimen seems 



to come very near to Cladophora {/Egagropila) 



Montagnei Kiitzing var. waianaeana Brand as 



described and figured by Brand in Beih. zum 



Bot. Gentralbl., Bd. XVIII, Abth. 1, p. 185, 



pi. V, figs. 21—22. 



This species has been found both in shel- 

 tered and in more exposed places, in shallow Fig 14. Cladophora 

 water and in deep sea down to a depth of RhSTin u'e 

 about 30 meters. summit of a branch. 



(About 12:1). 



It occurs, St. Croix: Rust up Twist, White Bay 



and Lime Tree Bay; St. Thomas in the sea to the west of Water Island. 

 Geogr. Distrib. West Indies, Florida. 



