440 



a densely matted growth on them. The unilocular and plurilocular 

 sporangia which often occur on the same filament were found in 

 June and July; but in a gathering from Nol so only plurilocular 

 sporangia were observed so on this point they agreed with Pogo- 

 trichum hibernicum Johns. 1 , though as a transverse section of the 

 filament showed that its median cells were considerably larger than 

 those along its periphery, it could nol belong to this species. 



This plant was already found by Lyngbye, who writes with re- 

 ference to its distribution around the Færoes (Le): — »Habitat in utraque 

 pagina Laminariæ esculentæ ad littora Færoensia, haud vulgaris«. 



Found in the following piaces: -- Ost.: Ejde (!), Molen (!); Str. : 

 Kvivig (!), Velbestad (!), Kollefjord (H. S.), Kaibak (!), Thorshavn (!); N ol- 

 so (!); Vaago: Midvaag (!); Syd.: Kvalbo (Lyngbye), Trangisvaagfjord 

 (H. S.), Frodebo (!), Sumbo Holm (!). 



POGOTRICHUM Reinke. 



129. P. filiforme Reinke, Atlas deutscher Meeresalgen, p. 62, 

 tab. 41, figs. 13 — 25; Kuckuck, Ueber Polymorphie bei einigen Phaeo- 

 sporeen (Festschrift fur Schwendener). 



Grows as an epiphyte on the lamina of Laminaria saccharina 

 which it sometimes covers with a dense, matted growth. At the 

 base of the filaments the same hyphæ-like threads occurred as 

 mentioned by Kuckuck (1. c. p. 364). 



It was found bearing plurilocular sporangia in May and July, 

 but I have not observed unilocular sporangia which Kuckuck 

 mentions as occurring on it (1. c. p. 363). 



This species, which is probably fairly eommon has hitherto been 

 gathered from the following piaces only: — Str.: Thorshavn (!); Vaago: 

 Midvaag (!). 



STICTYOSIPHON Kiitz. 



130. S. tortilis (Rupr.) Reinke, Atlas, Tab. 31—32; Rosenv., Grønl. 

 Havalg., p. 868. 



Found growing in shallow water in sheltered situations in the 



sublittoral zone. Grows on stones and also frequently epiphytic 



on Chordaria flagelliformis. It can bear a strong ad mixture of 



fresh- water. The specimens gathered in June and July which I 



have examined were sterile. 



Found hitherto in tbe following piaces only: — Ost.: Strænder (! ; 

 Str.: Head of Kalbakfjord (!) ; Syd.: Lobra (!); a closer search would no 

 doubt show it to be more commonly dislributed. 



1 Johnson, Pogotrichum hibernicum n. sp. (Proceed. of the Royal Dublin 

 Society, Vol. VIII, 1893) and Johnson, Two Irish Brown Algae Annals of Botany, 

 Vol. VIII, 1894). 



