407 



times quite short and irregularly formed. The sporangia are some- 

 times sessile, sometimes stalked, and even the larger branches 

 sometimes bear sporangia instead of hairs at their apices. The 

 chromatophores are ribbon-shaped and are often rainified cjuite in 

 conformity with Kuckuck's description. The main branches attain 

 to a thickness of abont 70 fi, and the cells have very thick walls. 

 This plant which grew in quite shallow water was of a dark, 

 yellowish-brown colour. 



With regard to f. hiemalis (Crouan) which is mentioned doubt- 

 fully by Simmons, 1. c. p. 270, I have not come across any spe- 

 cimens which I considered could be referred to it. 



Lastly, I may mention that a few specimens, e. g. from an 

 open ravine a mile north of Kvivig, resembled in no slight degree 

 Eet. penicillatus, but I did not feel justified in referring them to the 

 latter species, typical examples of which I have never met with in 

 the Færoes. 



This species which usually occurs as an epiphyte on larger 



algæ is common both in the littoral zone and in the sublittoral, 



on open sea-shores as well as in sheltered situations. It has been 



found bearing plurilocular sporangia in May, June and July, and 



unilocular in May and June. 



It was first found along the Færoese coasts by Lyngbye, and is 

 common both as f. typica and as f.arcta; {.varians I have met with only 

 in Sundene between Thorsvig and Kvalvig (Str.). 



86. E. spec. 



In preparing a Laminaria færoensis from Sundene between 

 Thorsvig and Kvalvig, which had been preserved in salt, an Ecto- 

 carpus-species was found which I assume to be a new species. 



Unfortunately the material, having been kept so long in salt, 

 was somewhat damaged, more particularly the contents of the cells, 

 but in spite of this I thought that I could pretty clearly distinguish 

 the chromatophores as ribbon-shaped. 



In fig. 69 I have shown some portions of the plant. It is 

 rather richly branched, the lower part of the main branches being 

 furnished with long branches like themselves, and the upper part 

 being most commonly set with short branches only. The main 

 branches are about 60 fi thick at the base and gradually grow 

 narrower, usually terminating at the apex in longer hair-like cells 

 which have few chromatophores and are about as long as broad, 

 though they vary, being sometimes shorter and sometimes longer. 



