Contribution. I. \^ 



Gen. Derbesia Solier. 

 in Ann. d. Sc. Nat. 3, 7, p. 157. 



Derbesia marina (Lyngb.) Solier 

 1. c. Vaucheria marina Lyngb. Hydr. Dan. p. 79. 

 Descr. Derbesia marina Solier 1. c. 



„ „ De-Toni, Syll. Alg. 1, p. 426. 



Fig. „ „ Solier 1. c. t. 9, fig. 1—17. 



Vaucheria „ Lyngb. 1. c. t. 22. 

 Exsicc. Derbesia „ Wittr. et Nordst. Alg. exsicc. Nr. 952. 



A sublitoral alga, which I found at the coast of East- 

 Finmarken only attached to Actinia in about 5 fathoms wat- 

 er. At Vardo was brought to me a coral to which some 

 specimens of this plant were fastened. It was said to have 

 been picked up from a depth of about 40 fathoms. Speci- 

 mens collected in the beginning of August were sterile. 



Distribution: Found only at Kjelmo in Sydvaranger, 

 scarce, and some few specimens brought to me at Vardo. 



Fam. Bryopsidacese Thur. 



in Le Jol. Liste Alg Cherb. p. 14. 



Gen. Bryopsis Lamour. 

 Ess. p. 281. 



Bryopsis plumosa (Huds.) Ag. 



Spec. Alg. 1, p. 448; Ulva plumosa Huds. Fl. Angl. p. 571. 

 Descr. Bryopsis plumosa Hauck, Meeresalg. p. 471. 

 Fig. „ „ Harv. Phyc. Brit. t. 3. 



Exsicc. „ „ Aresch. Alg. Scand. exsicc. Nr. 482. 



According to Philip Sewell, this species has been 

 collected at Vardo. Cp. Sewell in Trans, and Proc. Bot. 

 Soc. Edinburgh, 1889, p. 460. * 



I, Philip Sewell, The Flora of the Coasts of Lapland and the 



