Contribution, I. 117 



mela lycopodioides and Hahsaccion ramentaceum. It occurs 

 on open coasts as well as sheltered ones, and it attains a 

 length of until 25 cm. Zoospore-bearing specimens have 

 been collected in July and August. 



Distribution: Apparently pretty common all along the 

 coast and at some places abundant. I have taken it at 

 Svserholt, common but not plentiful, Mehavn, local but abun- 

 dant, Berlevaag and Vardo, rather scarce, Vadso, rather 

 scarce (f. cylindracea), and Pasvig, pretty plentiful. 



Monostroma angicava Kjellm. 



N. Ish. Algfl. p. 366. 

 Descr. Monostroma angicava Kjellm. 1. c. 

 Fig. „ „ „ „ t. 29. 



This is probably the most common Monostroma along 

 the coast of East-Finmarken. It appears to be a well dif- 

 ferentiated but much varying species. The plant has when 

 young frequently the form of a pear-shaped bladder but is 

 sometimes also cylindrical. A specimen in my collections 

 has the form of a cylindrical sack, 8 cm. long and 1,5 cm. 

 in diameter. Another is 18 cm. long and 3 cm. in diame- 

 ter upwards, and open at the top. When it in its further 

 growth bursts down to the base and expands membraneously, 

 it often does not become laciniate but continues simple with, 

 in general, slashed margin. A specimen is 18 cm. long and 

 18 cm. broad with deep reniform base. Another is 10 cm. 

 long and 14 cm. broad with cordate base. Others have a 

 broad, cuneate base. But, on the other hand, the frond is 

 sometimes split up even to the base in broader or narrower 

 segments, depending on the place of growth. When small, 

 such specimens much remind of certain forms of M. arcticum. 



The present species is litoral, growing on rocks, in 

 rock-pools and attached to shells af Balanidse or to other 

 algse, as Fuci, Hahsaccion ramentaceum, Gigartina mamillosa 

 and Bhodymenia palmata. It thrives best on open coast an4 



