KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 20. N:0 5. yASys 
Description. This species forms thin, uneven, blackish-brown when dried, elongated, 
almost linear, more or less confluent crusts on old submersed wood (fig. 8). The basal 
layer of these crusts is composed of firmly united, branching rows of cells, pretty di- 
stinctly parallel to one another, never flabellate as in L. fatiscens. These cells have 
thick walls; in optical longitudinal section they are square, rectangular, elliptic or irre- 
gularly 4—6-angular (fig. 9). The thickening layer is formed of vertical cell-rows 
issuing from the basal layer, terete-sixangular in periphery, simple or scarcely branching, 
which are rather loosely united upwards so as to become separated from one other 
by stronger pression. They are at least 250 w. in length and in full-grown individuals 
are composed of at least 20 cells which are square or rectangular in optical longitudinal 
section, and more high than thick. Their length is 10—15 w., thickness 8—10 wu. (fig. 
10—11). In L. fatiscens these cells are less high than thick. Reproductive organs of 
the species are not known at present. By the shape of the crust, the direction of the 
horizontal cell-rows, and the shape of their cells the present species is distinguished 
from the known L. fatiscens. 
Habitat. It has been found littoral, growing in sheltered localities on old wood in 
company with Chetophora pellicula and Callothrix Harveyi. 
Locality: The Norwegian Polar Sea: Collected at Talvik in the interior of Alten- 
fjord in Finmarken in the middle of September. 
Fam. SCYTOSIPHONEZ Tur. 
in Le Jou. Liste Alg. Cherb. p. 14 et 20. 
Gen. Ilea (Fr.) ARESCH. 
Phye. Scand. p. 353; Fr. Fl. Scan. p. 319; ex parte. 
Ilea fascia (Mizt.) Fr. 
l. ec. p. 321. Fucus fascia Mtuy. Fl. Dan. t. 768. 
f. typica. 
Descr. Laminaria fascia J. G. AG. Spee. Alg. 1, p. 129. 
rg. Fucus fascia MU.t. |. ec. 
Ewsicc. llea fascia ArgscH. Alg. Scand. exsice. N:o 96; spec. thallo angusto. 
f. cespitosa (J. G. Ac.) Fart. 
New Engl. Alg. p. 62. Laminaria cespitosa J. G. AG. Nov. p. 14. 
Descr. Laminaria cespitosa J. G. Ac. Spec. Alg. 1, p. 130. 
Fig. Phyllitis ceespitosa Born. et Tour. Etud. Phycol. t. 4. 
Fesicc. Ilea fascia Arescu. Alg. Scand. exsicc. N:o 96; spec. thallo latiore. 
Syn. Ilea fascia Kuren, Nord]. Alg. p. 39. 
Laminaria fascia J. G. Ac. Grénl. Aig. p. 110. 
» »  Asum. Alg. Hayes, p. 96. 
» » Dickie, Alg. Cumberl. p. 237; Alg. Sutherl. 1, p. 140; 2, p. 191. 
Phyllitis fascia Gosr, Algenfl. Weiss. Meer. p. 69. 
K. Vet. Akad. Handl. Band. 20. N:o 5 
Os 
nd Ne) 
