86 KJELLMAN, THE ALG^ OF THE ARCTIC SEA. 



Species and forms of the Flora of the Arctic Sea. 



Series FLORID EJE (Lamour.) Berth. ') 



Bangiaceen. Lamouk. Essai p. 115; lim. mut. 



Fam. CORALLINACEiE (Lamour.) Hauck. 



Meeresalg. p. 19; Lamohe. Hist. Polyp, p. 224. 



Gen. Corallina (Tourn.) Lamouk. 



Hist. Polyp, p. 275; Todrn. Inst. Herb. p. 570; char. mut. 



Corallina officinalis L. 

 Fauna Suec. p. 639. 



f. typica. 

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

 Fig. » » Habv. Phyc. Brit. t. 222. 



Exsicc. » » Aresch. Alg. Scand. exsicc. N:r 8. 



f. fleocilis nob. 



f. dense csespitosa, 10 cm. alta; fronde quam in forma typica graciliore et flexiliore, ramosissima, ramis 

 ramulisque plus minus fasciculato-congestis, ramulis oppositis, alternis, subsecundis, ultimorura ordinura aequalibus, 

 elongatis, flexilibus, saepe in callo reniformi desinentibus; articulis, summis exceptis, plus minus compressis, 

 diametro 2:plo — 3;plo longioribus; conceptaculis tetrasporangiferis raraulos vulgo brevissimos, articulo singulo 

 composites, interdum longiores, articulatos terminantibus: tctraporangiis, divisione peracta, obovato-oblongis vel 

 oblongis, 185 — 190 f.t. longis, 60 — 65 jti. crassis. 



f. rohusta nob. 



f. quam C. officinalis typica major et fere duplo crassior, pouderosa, Isete rosea; fronde parce et irregu- 

 lariter ramosa, ramis nltimi ordinis elongatis, strictis, alternis vel subsecundis, vix oppositis; articulis teretibus, 

 subcylindricis, raro subcompressis, obcouicis, diametro sesqui- ad 2:plo longioribus. 

 Srjn. Corallina officinalis Gobi, Algenfl. Weiss. Meer. p. 21. 

 » » Kleen, Nordl. Alg. p. 11. 



" » Nyl. et SsbI. Herb. Fenn. p. 74. 



Remark on the definition of the form. I know perfectly well that in specimens of 

 C. o/ficinaliv on the west coast of Sweden several of the branches of the last order are 

 in certain cases elongated and assume a cylindrical form. The form that 1 have cha- 

 racterized above under the name oi fiexilis certainly resembles such specimens. But they 



') I quote Berthold as having given the Floridese the limits here accepted, on the ground of his being 

 the first that has referred decidedly the Porphyracese (Bangiaccre) to this series. 



