434 



I, consequently, mention it as from the Færoes, though I very 

 much doubt its occurring there at all as it has never been found 

 there, either by Lyngbye or by any investigator since his time, 

 e. g. Simmons, Helgi Jonsson or myself. It is just possible 

 that Mr. Randropp has confused the labels or made some other 

 similar mistake. But, on the other hånd, I would emphasize the 

 faet that it would be Strange if Chætopteris plumosa were absent 

 along the Færoese coasts, it having been found along the eoasts of 

 the nearest adjacent countries. 



CLADOSTEPHUS (Ag.) J. Ag. 



118. Cl. spongiosus (Lightf.) Ag. Kjellm., N. I., p. 336 (272). 

 This plant occurred on the open coast in a very exposed locality, 



where it grew in rock-pools near low-water mark. Being gathered 



about the middle of May it was sterile. 



Found only near Gjov (Ost.) on the projecting point between the 

 village and the large ravine. 



Order ELACHISTACEAE. 



ELACHISTA Duby. 



119. E. fucicola (Vell.) Aresch., Pugill. 1, p. 235, tab. 8, fig. 67, 

 and Phyeeae scandinavicae, p. 155, tab. IX, fig. C; Kjellm., N. I., 

 p. 314 (253). 



var. typica Rosenv., Grønl. Havalg., p. 878. 

 var. lubrica (Rupr.) Rosenv., 1. c. 



The cells in the erect filaments of var. typica are very variable, 

 being sometimes longer than they are broad, sometimes only half 

 as long as their breadth. The thickness of the filaments also varies 

 considerably, the latter often attaining to a breadth of 50 fi and 

 even more; the thickest filament I measured was about 65 fi. As 

 E. flaccida has been reported from the Færoes (see below), one is 

 led to think that these specimens with thick, assimilative filaments 

 mighl possibly be small examples of the latter species, but in all 

 the specimens which I examined the assimilative filaments tapered 

 gradually to the base, and not suddenly, as is characleristic of 

 Elachista flaccida., the assimilative filaments of the latter are also 

 much thicker. 



The main form is an extremely common epiphyte on different 

 Fucaceæ in the lilloral zone and occurs both on exposed coasts 



