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а. tj'pica К. Rosenv. 1. с. 



The main part of the specimens belongs to the typical form. 

 They were gathered in a depth of 1 — 3 fathoms, and their length 

 varies from 5 — 15 cm. The material was collected as well on 

 open as on sheltered shores in June — July and consists of mere 

 sterile plants. The species seems to be common. 



ß. coryiiibosa (J. Ag.) K. Rosenv. 1. с 



This variety has only been found in one place, on sheltered 

 shore, in rapid current. Sterile specimens 6 cm. high. 



The main form was found in the following places : 



Gr. or.: Кар Dan, Tasiusak, Kakasuak, Kangarsik, Angmagsivik, 

 Turner Ö, Turner Sund, Sabine 0. 



ß. corymbosa : 



G r. о r. : Turner Sund. 



22. D. siniiosa (Good, et Wood.) Lam. , K. Rosenv. Grl. 

 Havalg. p. 808, Deux. Mém. p. 27. 



The main part of the specimens belongs to f. Ungulata, and 

 only a few plants may be referred to f. typica or f. quercifolia. 

 The largest plants are 30 cm. long. The species was gathered 

 in May — August in a depth of up to 30 fathoms. Specimens 

 Avith tetraspores were found in July. 



It is worth noticing how common f. Ungulata is in this 

 collection from the eastern coast; formerly it was only known 

 from a single place in Greenland, Sabine Ö (Rosenv. 1. c), and is 

 not mentioned at all from the western coast. This form which 

 usually occurs in sheltered places, was collected in East Green- 

 land in exposed places, near Кар Borlase Warren (11 fathoms), 

 off Turner Ö (15— 20 fathoms) and near Sabine Ö (3—8 fathoms). 

 In Turner Sund it was gathered on sheltered shore, in rapid 

 current and in a depth of 3 — 5 fathoms. Possibly such places 

 may be called sheltered on account of the considerable depths, 

 and I also suppose that the presence of the ice for the greater 

 part of the year reduces the effects of the exposed position. 



