— 193 — 



Pelvetîa canaliculata (L.) Dec. et Thür., Strömf. Algveg. p. 38. 



The Icelandic specimens are 2 — 8 cm. high, and are found both on 

 rather exposed coasts and in somewhat sheltered places. It occurs about 

 at high-water mark, often in company with Fucus spiralis. Fructiferous 

 specimens have been gathered in April— Sept. The species is only met 

 with in S. and SW. Iceland, where it seems to be rather common. 



SW. I c el. Bjarnarhöfn, Brimnes, Einarslön, Reykjavik, Skerjafjöröur, 

 Hafnarf'jörÖur ; Njarövi'k (G. O.). 



S. Icel. Staöur (CO.); Vestmannaeyjar. 



Ascophyllum nodosum (L.) Le Jol., Rosenv. Grl. Havalg. p. 832. Ozo- 

 thallia nodosa Strömf. Algveg. p. 34. 



It grows gregariously on rocks at half-tide level in the above men- 

 tioned Fucus-zone, and especially in the lower part of it. It seems to 

 prefer less exposed places, and attains a length of about 1 m. The species 

 is common along the coasts; fructiferous specimens have been gathered 

 in March— September. 



At the Botanical Museum at Copenhagen one specimen of Fucus 

 Mackaii (= Ascophyllum nodosum v. Mackaii) is preserved, which is said 

 to have been collected in Iceland, but the collector and growing place are 

 unknown. The label is written in Schumacher's handwriting. I suppose 

 that the word Iceland on the label is a misreading for Ireland. I think 

 the specimen in question is from Ireland, as neither Strömfeit, G. H. Osten- 

 feld nor I have observed this variety at the Icelandic coasts. 



Himanthalia lorea (L.) Lyngb. 

 Halidrys s i li quo sa (L.) Lyngb. 



Of both these species there are specimens here in the Botanical Museum, 

 which according to the labels are said to have been collected in Iceland. Col- 

 lector and growing place are unknown. As they have not been found again by 

 later travellers, I doubt that the specimens in question are from Iceland. 



