166 M. Foslie. 



Syn. Leptothrix marina Kiitz. Phyc. germ. p. 165 



Hypheothrix jadertina Rabenh. Fl. Eur. Alg. 2, p. 89. 



Litoral, appearing together with Calofhrix and other 

 algse on rocks at high- water mark, or sometimes in the lo- 

 wer part of the zone. 



Distribution: Found at Svasrholt, Mehavn, Vardo, Ki- 

 berg, Bugonses, Kjelmo and Pasvig, at most places common 

 and rather plentiful. (The plant has also been found at 

 Tromso, Byden, Gratangen and Tovig in Tromso amt). 



Lyngbya inundata (Kutz.) Hansg. 



in Wittr. et Nordst.* Alg. exsicc. Nr. 776; Phormidium inundatum 

 Kiitz. Phyc. gener. p. 193. 



Descr. Phormidium inundatum Kiitz. Spec. Alg. p. 251. 

 Fig. „ „ „ Tab. Phyc. 1, t. 45. 



Exsicc. Lyngbya (Phormidium) inundata Wittr. et Nordst. Alg. exsicc. 



Nr. 776. 



I met with this species at a single place only. It grew 

 in a small and shallow rock-pool (or chiefly in the margin 

 of the pool) at or perhaps a little above high- water mark 

 in a rather exposed locality, and jointly with Calothrix sco- 

 pulorum. The Finmarkian specimens belong to the foim 

 adultior. Cp. Wittr. et Nordst. 1. c. 



Distribution: Found at Vardo, local and very scarce. 

 (It has also been taken at Tromso). 



Gen. Hypheothrix Kiitz. 



Phyc. gener. p. 229; Spec. Alg. p. 266. 



Hypheothrix litoralis Hansg. 



in lit. (Lyngbya (Hypheothrix) litoralis Hansg.) 



„Lager schmutzig blaugriin, diinnhautig, mehr oder weniger schlei- 

 mig. Faden 0.5 bis 1.5 //. breit (mit den Scheiden), meist gekrummt und 

 leicht miter einander verflochen, mit diinnen eng anliegenden, farblosen 

 Scheiden. Zellen 1 bis l l / 2 mal so lang als breit, mit hell blaugriinem 

 Inhalte". 



