Contribution. I. 25 



the day before). I therefore cannot suppose it to have been 

 carried thither from any other territory. Moreover I have 

 taken a small specimen at Svarholt fastened to Ptilota plu- 

 mosa, on a depth of about 5 fathoms. It is unknown to me 

 when it develops its reproductive organs here. At Nordland 

 I have collected tetrasporiferous specimens with contemporary 

 almost fully developed thallom in the middle of May. 



Distribution: Not precisely known to me. Only found 

 at Vardo, washed ashore, scarce; and at Svarholt, a single 

 specimen. 



Gen. Rhodophyllis Ktitz. 

 Bot. Zeit. 1847, p. 23. 



Rhodophyllis dichotoma (Lepech.) Gobi 

 Algenfl. Weiss. Meer. p. 35; Fucus dichotomus Lepech. Comment. 



Petrop. p. 479, t. 22, sec. Gobi 1. c. 



Descr. Rhodophyllis vepreeula J. G. Ag. Epicr. p. 362. 



Fig. „ „ Kiitz. Tab. Phyc. J 9, t. 52. 



„ dichotoma Kjellm. N. Ish. Algfl. t. 12, fig. 3. 



Exsicc. „ vepreeula Aresch. Alg. Scand exsicc. No. 404. 



Syn. Calliblepharis ciliata Kleen, Nordl. Alg. p. 14. 

 Fucus ciliatus Guim. Fl. Norv. 2, p. 96. 

 „ laciniatus Gunn. 1. c. p. 143. 

 „ pumilus Fl. Dan t. 1066. 

 Chondrus crispus t pumilus Lyngb. Hydr. Dan. p. 16, 



A sublitoral alga, most frequent and best developed on 

 stony or shingly bottom within the upper part of the zone, on 

 a depth of 3 — 10 fathoms. But it also descends to a grea- 

 ter depth, and sometimes even to the lower limit of the na- 

 med zone. It is a pelagic plant which prefers open shore, 

 but also occurs on sheltered places and even enters the inner 

 part of the great bays. Here it assumes, however, forms 

 in general habit much differing from the pelagic and typical 

 one, Such a form is figured by K j e 1 1 m a n in his N, Islj, 



