13 



The specimens all have been found in Tasiusak. They 

 were gathered in a depth of up to 30 fathoms and are 10 — 

 15 cm. long. The frond of the main part of the specimens 

 is narrow and belongs to f. fusca Lyngb., but mingled with 

 this are broader plants belonging to the typical form. The 

 species was gathered with tetraspores in May, with cystocarps 

 in May — June. 



G r. or.: Tasiusak. 



Euthora J. Ag. 



26. E. cristata (L.) J. Ag., K. Ilosenv. Gri. Ilavalg. p. 813, 

 Deux. Mém. p. 28. 



The main part of the specimens belongs to f. angustata 

 Lyngb., and only a smaller number of plants may be referred to 

 the typical form. The length of the plants varies from 2 — 17 cm. 

 (f. typica 2 — 5 cm., f. angustata A — 17 cm.). These two forms 

 imperceptibly merge into each other; in somewhat exposed places 

 the broader form is found, and the long, narrow one in more 

 sheltered places. The specimens from Turner Sund which were 

 found in a sheltered place in rapid current are intermediate 

 forms between the broad and the narrow ones. Specimens from 

 Tasiusak and Kap Dan attaining a length of 15 — 17 cm., a length 

 unusual in this species, do not in other respects differ from 

 the ordinary f. angustata. Owing to a statement from Kruuse 

 they were gathered in sheltered places. 



The species was collected in May — August, in a depth of 

 3 — 20 ( — 30) fathoms. Specimens with tetraspores were gathered 

 in June, and cystocarps were found in May — August. 



Gr. or.: Kap Dan, Tasiusak, Stenö, Ödesund, Turner Sund, 

 Turner Ö. 



Tiirnerella Schmitz. 

 27. T. Penny! (Harv.) Schmitz emend., K. Hosenv. Deux. 

 Mém. p. 29. T. Pennyi, T. septentrionalis K. Rosenv. GrI. Havalg. 



p. 815 and 817. 



