459 



Farlow's specimens are also destitnte of muciparous canals then 

 they resemble the present form in no slight degree. 



Thus Laminaria færoensis, of which the typical form is parti- 

 cularly characteristic and easily recognizable is owing to the occur- 

 rence of this form perhaps not so clearly marked off especially 

 from L. saccharina, just in the same way as Rosen vinge (»Grønl. 

 Havalg.«, p. 846) points out that /,. longicruris on account of the 

 occurrence of not decidedly typical specimens, is less distinct from 

 L. groenlandica and L. cuneifolia. 



The typical Laminaria færoensis which is undoubtedly the 

 largest alga of the Færoese coast, grows by preference in the most 

 sheitered situations; it attains to its highest development at the head 

 of fjords and in the narrow sound between Ostero and Stromo. 

 As I said before, it develops more vigorously in shallow water — 

 in a few metres — where it can reach the surface by means of 

 its air-vesicles; but well-developed specimens may also occur at 

 greater depths, at about 10 fathoms. Formå sacchariniformis occurs 

 at the boundary of the area of distribution of the typical form, 

 especially in deeper water where the sea begins to be somewhat 

 disturbed. But the species has never been met with in the open 

 sea. It grows especially on stony and gravelly bottoms and even 

 on quite fine-grained gravel, and in such a case it attaches itself 

 by means of its finely divided haptera to numerous small stones. 



Fructifying specimens were found in May, June and July. 



With regard to the size of the plant, I may refer to the 



measurements given in Bot. Tidsskrift (1. c). 



This is a coramon species and occurs abundantly in all well- 

 shellered localities: -- Syd.: Head of Vaagfjord and Trangisvaagfjord; 

 Str. : Kollefjord, Kalbakfjord and in faet everywhere in the sound be- 

 tween Ost. and Sir. from the narrow tideway to the north to about 

 Kalbakfjord; further, in Skaalefjord on Ost. During a brief stav in 

 the interior of Sorvaagsfjord I searched for it in vain; it is possible 

 that this fjord, being open and rather exposed even in the interior, does 

 not afford a suitable habitat for this species. 



148. L. digitata (L.) Lamx. Lyngb., Hydrophyt., p. 20 partim. 



f. gennina Le Jol., Examen des espéces confondues sous le nom 

 de Laminaria digitata auct. (N. Aet. Car. Leopold. Vol. 25.) 



f. stenoplujlla Harv., Phycol. Brit., Plate 338; Laminaria steno- 

 phylla (Harv.) J. Ag., De Laminarieis, p. 18; Kjellm., Handh., p. 24. 



f. cucullata Le Jol., 1. c. 



I think the three above-mentioned forms of this plant, which 



