— 197 — 



On the outer side of the membrane we find, in any case in the 

 younger branches, numerous small glands regularly distributed over 

 the wliole surface ; they are quite short and consist of a small flat, 

 roundish, basal cell and an oblong, pyriform topcell (Fig. 14 E, i'). 

 They are quite enclosed in the gelatinous, thick outer wall of the 

 thallus. 



The plant has an apical growth (Fig. 14 G) and I have found 

 it quite in accordance with that of Champia parvula as described 

 by Bigelow. 



When Bigelow on the other hand writes that "the branches 

 in Champia saliconioides do not come off at the nodes but may 

 spring from any part of the internodes" this does not quite agree 

 with what I have found in my material, where the branches mostly 

 came out at the diaphragms and very seldom from any part of the 

 internodes. 



The tetraspores (Fig. 14 H, I) are scattered over the whole 

 surface of the branches; they lie rather deeply in the membrane 

 and emerge with more than the halfpart of their length into the 

 cavity of the interior (Fig. 14 I). 



The cystocarps are urn-shaped and scattered over the surface 

 of the thallus. 



As mentioned above this species comes rather near to Champia 

 parvula and De-Toni in a paper: "II genere Champia Desv."^) 

 also considers it a variety of this species, as was also earlier done 

 by Farlow. In "Sylloge Algarum", vol. IV, sectio II, also published 

 in 1900, it is on the other hand considered as a species. I am 

 myself most inclined to the latter opinion, as in my, certainly 

 rather small material, I have not found any transitional forms. 

 From Champia parvula it is easily separated by its larger and 

 stouter habit and by having the tetraspores scattered over the 

 whole surface of the branches, while in Champia parvula they 

 occur only in the middle of the branches. 



Plants with tetraspores and cystocarps were found in the 

 month of March. It was only met with in deep water (about 

 14—15 fathoms). 



Found at St. Jan: off Christiansfort, near Mary's Bluff (leg. 

 Dr. Th. Mortens en), and off Hermitage. 



') In Memorie della Pontificia Accademia dei Nuovi Lincei, vol. XVII, Roma 

 1900. 



