32 



Gathered with sporangia in September. The largest speci- 

 men 17 cm. long. 



Gr. or.: Tasiusak, Ödesund. 



Fam, Desmarestiaœœ. 



Desmarestia Lam. 



52. D. aciileata (L.) Lam., K. Rosenv. Grl. Havalg. p. 857, 

 Deux. Mém. p. 59. 



The species was gathered in May — July. The specimens 

 gathered in May are richly supplied with hairs. On the con- 

 trary only a few plants of a gathering from June had a small 

 number of hairs. 



It was found in a depth of 3 — 20 ( — 30) fathoms, both in 

 exposed and sheltered places. 



Gr. or.: Kap Dan, the estuary of the Kalerajuek near Kap Dan, 

 Tasiusak, Tiningnekelak, Turner Ö. Sabine Ö. 



var. media (Ag.) J. Ag., K. Rosenv. Grl. Havalg. 1. c. 



Of this variety a few specimens were gathered in July; 

 hairs abundant; they perfectly agree both with the specimens 

 mentioned by Rosen vinge (1. c.) and with the Faeroes speci- 

 mens (Borgesen, Faer. Alg. p. 445). Gathered on open shore, 

 in a depth of 1 1 fathoms. 



Gr. or.: Kap Borlase Warren. 



53. D. yiridis (0. F. Müll.) Lam., K. Rosenv. Grl. Havalg. 

 p. 859, Deux. Mém. p. 60. 



The length of the specimens varies from 3 — 40 cm., they 

 were all gathered in July, and in some of them hairs are 

 abundant. The species was found both in exposed and shel- 

 tered places, in a depth of 3 — 11 fathoms. 



Gr. or.: Turner Sund, Kap Borlase Warren, Sabine 0. 



