f: 



\ 



m 



. Foslie. 



toiant developed on open coasts, or else in exposed localities, 

 but growing in sheltered places, or entering into deep bays, 

 it becomes more and more narrow. At Finmarken as well 

 a» farther south I along open coast only have met with but 

 the btoad form (Ph. cæspitosa), and, on the other hand, only 

 the nairow one in the inner pait of deep bays. Here the 

 latter is most often 1.5 — 4 mm. broad and generally more 

 or less twisted, but sometimes growing even in thesa places 

 gregarious in a large number of individuals. 



The species is litoral, chiefly occurringin pools between 

 ttdes, usually fastened to smaller stones, more seldom to rocks 

 and exceptionally to other algæ, as Ilalosaccion ramentaceum 

 and Fuci. It is smaller at East- than at West-Knmarken, 

 generally about 10 cm. long, seldom attaining a length of 

 25 — 30 cm. It bears reproductive organs in August, in 

 Tromso amt in the later half of July. 



Distribution: Common and pretty plentiful almost every- 

 where. 



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Gen. Scytosiphon (Ag.) Thur. 



in Le Jol. Liste Alg. Cherb. p, 20; Åg. Spee. Ålg. 1, p. 160; char. mut 



Scytosiphon lomentarius (Lyngb.) J. G-. Ag. 



Spee. Alg. 1, p. 126; Chorda lomentaria Lyngb. Hydr. Dan. p. 74. 



f, typica. 



Descr, Scytosiphon lomentarius J. G. Ag. 1. c. 

 Fig, Cborda lomentaria Harv. Pbyc. Brit. t. 285, 



Scytosiphon lomentarius Arcsch. Obs. Phyc. 3, t. % fig. 1. 



Exsicc. Chorda lomentaria Arcsch. Alg. Scand. exyicc. No. 94. 



f. fistulosa (Ag.) 



Cborda filum ^ fistulosa Ag. Syn. p. 14. 

 Beser, Chorda filura d fistulosa Kiit^. Spee. Alg. p. 548. 



Fig. 



Fxsiec* 



r> 



w 



„ „ „ Tab. rhyc. 8, 1. 14 et 15, fig. d— e. 



lomentaria var. autumnalis Arcsch. Alg. Scand. cxsicc. No. 95. 



tf 



b. Aresch. 1. c. No. 169, 



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