399 



came across it growing in caves, where il mav be found forming 

 large, wide-spread, shiny crusts of a dark-red colour on the rock 

 faces, from somewhal above high-water mark downwards. In the 

 sublittoral zone it grows on shells and stones as also epiphytic on 

 the stalks of Laminaria (especially /.. hyperborea). It is common 

 both on open sea-sbores, and in sheltered localities in tbe interior 

 of fjords and sounds, e. g. in Sundene between Thorsvig and Kvalvig 

 where it grows luxuriantly on stones under Laminaria færoensis. 

 Owing to want of specimens collected during the winter months 

 proper, tbe greater part of tbe material was sterile 1 , but some 

 specimens, collected in June, August and November, were found 

 bearing a few tetraspores. 



It seems to be fairly common along the coasts of the Færoes, nm I 

 \\;is already found by Lyngbye, whose herbarium contains speeimens 

 from Kvivig. and who writes with reference to its habitat: — »Ad insulas 

 Færoenses latera rupium declivium in infimo refluxus limite obvestiens, 

 ut ad Quivig et inter Thorsbavn et Hoyvig«. 



PEYSSONNELIA Decsne. 



69. P. Dubyi Crouan. Kjellm., N. I., p. 180 (140). 



Found in the sublittoral zone from a deptb of 2 to 10 fathoms. 

 Usuallv it grows attached to stones and shells, but also occurs 

 epiphytic on the stems of Laminaria hyperborea. Mel with both in 

 the open sea and in the interior of fjords in sheltered localities. 



Specimens gathered during tbe summer months were sterile; 



in a single collection gathered late in October specimens were found 



bearing tetraspores. 



Found at the following piaces: — Bord 6: Haraldsund (H.J.); Ost.: 

 Skaalefjord H. J. ; Str. : Sundene between Thorshavn and Kvalvig (!), 

 Thorshavn (!), Gliversnæs (!). 



RHODODERMIS Crouan. 



70. R. elegans Crouan. 



Found in the sublittoral zone a few times on stones and shells. 



Tetraspore-bearing piants collected in May and July. 



Found hitherto: — Str.: Kalbakfjord (H. J.), Gliversnæs (!); Syd.: 

 Trangisvaagfjord (!). 



1 It is very difficult to determine sterile Squamariacé-material, as e. g. Cruoria 

 pellita, and Pctrocelis cruenta and 1'. Hennedyi resemble eaeh other very closelj 

 when sterile. I think therefore that, at any rate, /'. Hennedyi, whicb lias been 

 found along the shores of Iceland, also occurs around the Fa-roes. 



