526 



colonies, causing semiglobular swellings on the lamina. A trans- 

 verse section of the lamina showed that the endophyte more or less 



destroys or ruptnres the cells of 

 the epidermis, and I presume (I 

 have not observed it) that the 

 latter is finally entirely tornasun- 

 der to allow the spores to escape. 

 The cells are irregularly shaped, 

 sometimes rounded, sometimes 

 polygonus, and occur most fre- 

 quently singly or a few together 

 in short, ramified filaments, pro- 

 duced by vegetative division. 

 The vegetative cells are abont 

 5,4 fx thick. The conidangia are 

 somewhat larger, about twice as 

 large, the greatest diameter being 

 8 — 10 fi. The conidia are pro- 

 duced abundantly in the coni- 

 dangia and are abont 1 /< broad. As I have had only spirit speci- 

 mens of this plant for examination I am not prepared to say any- 

 thing about the colour of its cell-contents. 



Found with conidangia in the beginning of May. 

 This species has hitherto been found only as an endophyte in 

 Chondrus crispas on Nolso: Ejde(!); and in Laminaria hyperborea on 

 Str.: Thorshavn (!). 



Fig. 110. Hgella cnclophytica nov. spec. '? In Laminaria 

 hyperborea. 370 : 1 . 



Order OSCILLATORIACEAE. 

 SPIRULINA Turpin. 



209. S. subsalsa Ørsted. Beretning om en Exursion til Trin- 

 delen, Krøyers Tidsskrift, 3. Bd., p. 56(5, 1842. 



formå (i oceanica Gomont, Monographie des Oscillariées, p. 274. 

 Found in rock-pools on fairly exposed coast. 

 Str.: between Thorshavn and Hojvig (!). 



PHORMIDIUM Kutz. 



210. Ph. autumnale (Ag.) Gomont, cmend. Jobs. Schmidt 1 , Danni. 

 blaagr. Alg., p. 68 (348). 



Grows near high-water mark, sometimes on rocks where fresh- 



1 Determ. Johs. Schmidt. 



