KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. yh i) 
a dried specimen, it represents in this point pretty accurately A. Pylaii, in which 
according to the quite correct account of J. G. AGArpu »bases pinnarum quasi margine 
tenuiore conjunguntum, but it does not at all resemble A. esculenta f. musefolia, in 
which I as well as J. G. AGarpu have always found the sporophylls (pinna) »quasi ¢ 
canaliculo impresso egredientes» (ep. J. G. AG. Gronl. Lam. och Fue. p. 25). 
Habitat. This species sometimes occurs in rock-pools in the litoral zone, being 
then more or less dwarfed with very broad sporophylls. But on the coast of Norway 
it is generally found at or somewhat below low-water mark, between the litoral and 
the sublitoral region. It is gregarious as the preceding species, but does not grow in 
any very great numbers together. Specimens taken on the coast of Norway in July 
and August bear ripe zoosporangia. The individuals brought home from Greenland by 
Swedish expeditions, most of which seen by me are provided with zoosporangia, appear 
to have been collected in July, August, and September. 
Geogr. Distrib. Known from the Norwegian Polar Sea and Baffin Bay. I cannot 
decide where it attains its maximum of frequency. The most northern point where it 
is known with certainty to occur is Maasé on the north coast of Norway about Lat. 
1s eas ag 
Localities; The Norwegian Polar Sea: Nordlanden according to Kieren; Tromsé 
amt near the town of Troims6, local and searce; Finmarken at Maas, local, but rather 
plentiful. 
Bafjin Bay: the west coast of Greenland at Julianeshaab, Sukkertoppen, Jakobs- 
havn, Claushavn, probably rather abundant. Cp. J. G. Aa., 1. c. p. 20—21. 
Alaria membranacea J. G. AG. 
Gronl. Lam. och Fue. p. 26. 
Descr. Alavia membranacea J. G. Aa. |. ec. 
Syn. Alaria esculenta Dickin, Alg. Sutherl. 1, p. 140 (2). 
» » KLEEN, Nordl. Alg. p. 32; ex parte, fide syn. 
» » Nyl. et Sel. Herb. Fenn. p. 73(?). 
» » Post. ef Rupr. Ill. Alg. p. Il. Cfr. Gost, 1. c. p. 78. 
»  musefolia KiettM. Algenv. Murm. Meer. p. 35. 
»  Pylaii J. G. Ac. Spetsb. Alg. Till. p. 28 et 30; Grénl. Alg. p. 110. Cfr. Gronl. Lam. och 
Fue. p. 24 et 26. 
Orgyia pinnata Gosr, Algenfl. Weiss. Meer. p. 77. 
Remark on the species. In the collections of Alariw which I have brought home 
from the coast of Finmarken in Norway, there are several young speeimens that agree 
very closely with the Greenland alga distributed by J. G. AGarpm under the name of 
A. membranacea. They belong undoubtedly to another series of forms than A. escu- 
lenta. But they come very near A. Pylaii on the one side, A. grandifolia on the other, 
and might be considered as an intermediate form between these two species or as a 
more southern form of A. grandifolia. However, the plant occurring in an almost 
identical form at two places so widely distant as the coast of Finmarken in Norway 
