Contribution, I. 5 



Ser. F 1 r i d e ae (Lamour.) Thur. 



in Le Jol. Liste Alg. Cherb. p. 16; Lamour. Essai p. 115; lim. mut. 



Fam. Corallinacese (Lamour.) Hauck 



Meeresalg. p. 19; Lamour. Hist. Polyp, p. 244. 



Gen. Corallina (Tourn.) Lamour. 

 Hist. Polyp, p. 245; Tourn. Inst. Herb. p. 570; char. mut. 



Corallina officinalis L. 

 Fauna Suec. p. 539. 



/. typica. 

 Descr. Corallina officinalis Arescb. in J. G. Ag. Spec. Alg. 2, p. 562. 

 Fig. „ „ Harv. Pbyc Brit, t, 222. 



Exsicc. „ „ Arescb. Alg. Scand. exsicc. Nr. 8. 



f. flexilis Kjellm. 

 N. Ish. Algfl. p. 114. 

 Descr. Corallma officinalis f. flexilis Kjellm. 1. e. 



f. robusta Kjellm. 

 1. c. 



Descr. Corallina officinalis f. robusta Kjellm. 1. c. 



The most common form of this species is f. typica, but 

 f. flexilis is also pretty common on several places. I have 

 not met with typical specimens of f. robusta, I found how- 

 ever at Berlevag an intermediate form between it and f. 

 typica. 



The species is generally litoral and occurs chiefly in 

 rock-pools in the upper part of the zone, or on rocks and 

 stones at low-water mark. From the sublitoral zone I have 

 seen a few specimens, fastened to roots of Laminaria, which 

 were cast on shore, It occurs on exposed coasts as well as. 



