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I have found this association at its finest development in the 

 Sounds between Stromo and Ostero, and especially between Thorsvig 

 and Kvalvig. The tides are wanting here, consequently there is 

 no current, and even during a storm the water is only slighlly 

 troubled in this narrow sound. Huge specimens of L. færoensis 

 grow abundantly here in shallow water near the coast forming 

 dense »forests«. 



The stalk which is often nearly two fathoms long and thin 

 below, is fastened by several haptera to stones on the bottom. Its 

 uppermost part is thick, hollow and full of air; it often measures 

 some inches in diameter and serves as an air-bladder. These may 

 be seen side by side on the surface of the water, the huge lamina 

 hanging down from them. This agrees perfectly with Rosenvinge's 

 description (71, p. 211) of L. longicriiris on the coasts of Greenland, 

 which species in the whole mode of its life seenis to be closely 

 related to L. færoensis. 



L. færoensis fructifies in summer, and probably then reaches ils 

 highest development. The changing of the lamina is hardly restricted 

 to any special season. According to my observations it may be 

 supposed, that the lamina grows more or less evenly for the greater 

 part of the year, and gradually decays at the apex. 



As mentioned before, Laminaria færoensis grows down to a depth 

 of about 10 fathoms; in deep water it is, however, most often some- 

 what smaller. Far out in the fjords, where there is some current 

 and more troubled water, the lamina becomes narrower, almost 

 lanceolate and the stalk less swelled. I call this form f. snccharini- 

 formis, as it is very much like L. saccharinn, from which it may, 

 however, be easily distinguished by its hollow stalk. 



The stalks of L. færoensis are generally without epiphytes. Ac- 

 cording to Rosen vinge (1. c. p. 212), this is also most often the case 

 with L. longicraris in Greenland. In »Sundene«, in shallow water, 

 I have however sometimes met with piants with the stalks den- 

 sely overgrown with some green and brown algæ, e. g. Monostroma 

 fuscum, Ectocarpus litoralis, Ectocarpus spec, etc. The stones on 

 which it grows are likewise often covered by large, dark red crusts 

 of Cruoria pellita. In deep water various red epiphytes, e. g. Polij- 

 siphonia nrceolata, Lomentaria clavellosa, Ptilota plumosa, Delesseria 

 sinuosa, etc. are also found on the stalk. It very commonly oc- 

 curs also, that young specimens of Laminaria færoensis are attached 

 to the stalks of old specimens. In deeper water the Laminaria 



