112 I'- K()iJ)i;iui' I{()si:nvinc.i,. 



c:isi's I Ikivc round in Ihc Ihicker filanu'nls one inlensely red-coloured 

 body in some of the cells, similar lo Ihose taken lor spores by 

 Baiters. I have not suhmilled this interesting alga to a more de- 

 tailed study and therefore cannot express an opinion on the (luestion 

 of its systematic position; I refer il with douhl lo Ihe JiangiaceceK 



I.oc. I^ast side of Kojdewcy Island; entrance to the liarbour; at Vestre 

 I lav nemes; oil" Bnadsk;eret. 



B. Phæophyceæ. 



Fa 111. Fucaceœ. 



Fucus (L.) Dene el Tluir. 



23. F. inflatus L. 



K. Hosenvinge (ISiKJ) p. ÜU, (ISi)cS 1) p. 4.'); Jnnssoii (l!t()4 p. li). 



This species seems to be common in the upper sublittoral region, 



in particular in the harbour where it grows gregariously at a depth 



of 2 lo 4 meters, on stonj' ground, bul il occurs also in the littoral 



region (comp. p. 96). It occurs in a form coming near lo f. evanes- 



cens. The frond is up to 12 mm. broad, the midrib well developed, 



the border sometimes feebly undulato-serrate. The receptacles are 



short, seldom over 5 mm. long. The largest specimen is 30 cm. long. 



Inflations filled with air have not been observed. Some plants, 



which have perhaps been loose, approach lo f. memhranacea. The 



species for the rest only rarely occurs among other loose algæ. 



Found with ripe sex-organs in August and September. 



Loc. East side of Koldewey Island; Cape Bismarck; Danmarks Havn; 

 Baadskæret. 



Farn. La miliar iaceæ. 

 Alaria Grev. 



24. A. Pylaii (Bory) .1. Ag. emend, var. grandifolia (J. Ag.) 

 Jonsson. 



Jonsson (1904) p. 21. 



The Alariæ contained in the collection belong undoubtedly all 

 to the same species. They have all a long stipilal part, the greater 

 part of which belongs to the rachis. It agrees in this and in its 

 large dimensions with A. grandifolia J. Ag. The base of the lamina, 

 however, is often comparatively narrow, cuneate; it may also be 

 rounded ovate, but I have never found it „eximie subcordato-ovala", 



^ In (190!)) I have not mentioned tliis alga under the Bangiacea\ as a provisional 

 examination led me to believe, that Nadsons above-mentioned supposition 

 was right. 



