49 



Narsak (L. К. R.); Kagsimiut (H.Lassen); Umanarsuk, Kimatulivig- 

 salik, Kitsigsut Öer (А. Jessen). 



Gr. or.: Ikerasak, Tiningnekelak, Angmagsivik, Smalsund, Ode- 

 sund, Nualik. 



L penicillifoi'Diis (Fosl.) Kjellm., Acrosiphonia p. 80; Clado- 

 phora (Spoogomorpha) arcta â. penicilliformis К. Rosenv. Gri. 

 Havalg. p. 908. 



I have with some doubt referred a single specimen to this 

 species. Terminal sporangia did not occur, but as the upper 

 part of many branches had died off, I think it probable that 

 the rows of emptied terminal sporangia had been thrown off. 

 Some intercalary sporangia occurring singly have been observed. 

 In other respects the Greenlandic specimen agrees well with 

 this species. 



It was collected in July, on rocks in the littoral region. 



Gr. о CO.: Godthaab (L. K. R.). 



Geogr. distribution: Iceland, Norway. 



Spongomorpba (Kütz.). 

 The genus Spongomorpha is here defined as proposed by 

 Wille ^) and thus only includes species with a single nucleus 

 in each cell. Thus defined the genus is identical with Kjell- 

 man's subgenus Isochrous (Acrosiphonia p. 82). 



S. vernalis (Kjellm.), Acrosiphonia vernalls Kjellm., Acrosi- 

 phonia p. 82 ; Cladophora lanosa K. Rosenv. Deux. Mém. p. 103. 



This species is known only from one place in Greenland, 

 and the specimens in question have already been mentioned by 

 Rosenvinge (I.e.). Rosenvinge remarks that, before Kj ell- 

 man's work on Acrosi;phonia was pubhshed, he would certainly 

 have referred the specimens to Cladophora la?iosa. ■ In a foot- 

 note (I.e. p. 103) Rosen vinge points out that these specimens 

 only contain one nucleus in each cell ; this is a highly important 



) Botaniska Notiser 1899, p. 281. 



XXX. 



