36 



This variety is the most frequent in the collection and accor- 

 ding to a statement from Kruuse it is common in East Green- 

 land. The largest specimens are 30 cm. long. It was gathered 

 in May — September; in June, July and September with unilocular, 

 in June and July with plurilocular sporangia; in a depth of 

 1 — 3 (—30) fathoms. 



Gr. or. : Кар Dan, Tasiusak, Ikerasak. Kangarsik, Tiningnekelak, 

 Angmagsivik, Smalsund, Kangerdlugsuatsiak, Xualik. 



var. dirarieata Kjellm. forma. 



Grows on Fucus infatus. The filaments are densely en- 

 tangled, so as to produce a habitual resemblance with Ectocarpus 

 tomentosus. The thickest main branches were 19 — 23 и thick. 

 The branches are frequently incurved and not rarely slightly 

 hooked at the apex which often ends in a hairlike point. I have 

 seen a single plurilocular sporangium terminal on a long branch, 

 196|f/ long, 22// thick at the base and \1 и at the top. Gathered 

 in the littoral region in August. 



It seems to me that this form is very much like f. prœtorta 

 Kjellm. (Handbok p. 85) which is only known from the Baltic; 

 but whether they are identical I am not able to decide. 



Gr. or.: Polhems Dal in Kong Oskars Fjord. 



var, varia (Kjellm.) Kuck. f. typica Kuck.. Pylaiella varia Kjellm. 



Typical specimens have been gathered, some loose, and 

 some others attached to stipes of Laminaria, in a depth of up to 

 5 fathoms. Gathered in June and July with unilocular sporangia. 



Gr. or. : Ikerasak, Tiningnekelak. 



Subgen. Euectocarpus Hauck. 



67. E. siliculosus (Dillw.) Lyngb., K. Rosenv. Grl. Havalg. 

 p. 882. 



Some specimens of this species were gathered in September; 

 they attain a thickness of 55// and have only plurilocular spo- 

 rangia which are 188/« long and 43/« broad. 



Gr. or.: Tasiusak. 



