40 



Farn. Sphacelanacece. 

 Chætopteris KiUz. 



78. Ch. plumosa (Lyngb.) Kütz., K. Rosenv. Grl. Havalg. 

 p. 903, Deux. Mém. p. 99. 



According lo a statement from Kruuse this species is 

 common in East Greenland ; it grows gregariously, and from 

 some of its habitats it has been gathered in great numbers. 

 It was collected in a depth of up to 20 fathoms ; the largest 

 plants are 10 cm. long. All the specimens gathered in May — 

 September are sterile, but the stalks of the sporangia from earlier 

 years seem to be persistent, as they cover the older branches 

 with a dense felt, as mentioned by Rosenvinge (1. c). 



Gr. or.: Kap Dan, Tasiusak, Ikerasak, Stenö, Ödesund, Kan- 

 gerdlugsuatsiak, Nualik, Kap Borlase Warren, Sabine Ö. 



Sphacelaria Lyngb. 



79. S. racemosa Grev. var. arctica (Harv.) Rke., K. Rosenv. 

 Grl. Havalg. p. 904, Deux. Mém. p. 100. 



The species is surely common in East Greenland. It was 

 gathered in the littoral region and in the sublittoral region in 

 May— September, in a depth of up to 5 fathoms (in a single 

 case a depth of 3 — 30 fathoms was slated). The specimens are 

 up to 3 cm. long, and they are almost all sterile, only in a few 

 specimens gathered in June, emptied unilocular sporangia were 

 found; Ihey were mostly terminal on monosiphone branches, 

 but sometimes they were found several together on polysiphone 

 branches, which is in perfect agreement with Rosenvinge 's 

 description in Deux. Mém. (1. c). 



Gr. or.: Kap Dan, Tasiusak, Smalsund, Moræneo, Stenö, Kap 

 Dalton, Turner Sund. 



S. radicans Harv., Sauvag. Sphacelaria p. 56; S. olivacea 

 K. Rosenv. Grl. Havalg. p. 904 ex parte. 



Only sterile specimens, destitute of hairs, growing on the 



