Fig. VI: C. rubrum f. linearis. 



bitten in two in the apices. Often several young shoots are to be 

 found in these apices. 

 Store Dimon, 12 / 7 1896. 



Iceland. 



Most of the specimens are evidently influenced by bad exter- 

 nal conditions, the species being on these coasts near its northern 

 limit. In the most cases the specimens are to be referred to the type 

 subtypica-modificata, but as already mentioned their habit is often 

 rather sickly. The fructification seems not to be restricted. 



The type prolifera-secundata. 

 forma secundata irregularis. 



SW. I: Vestmannaeyjar, 22 h 1901 (R. Hørring). 



The type pedicellata-virgata ;; Pl. V, fig. 30. 

 forma virgata. 



SW. I: Reykjavik, the upper litt, zone, 7 /s 95 (Ostenfeld). 



forma pedicellata. 



NW. I: Dyrafjöröur by Myrakollur (cyst), 30 /6 1896 (Ostenfeld). 



The type subtypica-modificata; Pl. V, fig. 27 and 29. 

 forma subtypica-modificata vera et irregularis. 

 More os less feebly developed specimens bearing the impress 

 of bad conditions 1 ). 



S. 1: Vestmannaeyjar, 12 h 1904, (0. Paulsen). 

 Sandur, 17 / 7 1897 (tetr.). 



x ) A few specimens seem to have been collected in their last stage of living 

 (old specimens). 



