KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. 265 
On the north coast of Spitzbergen this kind of propagation was especially lively during 
the winter. The plant also develops zoospores here in the same season; however, such 
organs are chiefly produced during the latter part of the summer, August and Sep- 
tember. Fostie has collected specimens with zoosporangia at the end of September at 
Nordlanden. 
Geogr. Distrib. The present species is probably circumpolar. However, it has 
not been observed as yet in the Siberian and American Arctic Seas. The maximum of 
frequency is on the coasts of Spitzbergen. The most northern point where it has been 
found is Musselbay on the north coast of Spitzbergen Lat. N. 79° 53’. 
Localities: The Norwegian Polar Sea: Nordlanden; Lofoden abundant; Finmarken 
at Talvik local and scarce. 
The Greenland Sea: common and abundant on the north and west coasts of Spitz- 
bergen. 
The Murman Sea: the west coast of Novaya Zemlya, Jugor Shar, local and scarce. 
The White Sea: Solowetski Isles. 
The Kara Sea: Uddebay scarce; Cape Palander rather abundant; Actinia Bay 
scarce. 
Baffin Bay: the west coast of Greenland: Neuherrnhut. 
Phloeospora pumila KJeuum. 
Algenv. Murm. Meer. p. 45. 
Descr. Phloeospora pumila KJELuM. |. c. 
Fig. » » » t. 1, fig. 16—22. 
Remark on the species. In my description of this species I have expressly stated 
that I could not determine with certainty how far it is related to Pal. tortilis, whether 
it is to be regarded as a distinct species or as a dwarfed form of the latter alga pro- 
duced by external conditions. I have not since that time acquired any new facts for 
deciding this question. But in the mean time Goxr has brought forward a remarkable 
view with regard to the present alga. He believes he has found that it is »nichts weiter 
als vegetative Sprosse der Phl. tortilis» (Gopi, Algenfl. Weiss. Meer. p. 65). When I 
described Phl. pumila, I was perfectly well acquainted with the peculiar manner of 
vegetative propagation in Phl. tortilis, having given a detailed account of it in Spetsb. 
Thall. 2, p. 41. I am quite willing to admit that the axes and systems of axes that 
detach themselves from older individuals of Pahl. tortilis and then develop independently, 
are very similar to Phl. pumila. But Gost, in identifying these formations with Pd/. 
pumila, has overlooked my express statement that Ph/. pumila forms distinct tufts or 
small mats and that these are attached to a substratum by unmistakable rhizoids. I have 
seen plenty of such formations as are mentioned by Gos1, but I have always found 
them more or less firmly united or entangled to indefinite masses lying loose on the 
bottom, never composing distinct tufts or mats, covering or fastened to a substratum, 
as in the case in Phl. pumila. In this alga a considerable number of rhizoids combined 
into a cushion-shaped plexus issue from the lower part of the frond. Such a plexus 
K. Vet. Akad. Handl. Bd 20. N:o 5. a4 
