86 KJELLMAN, THE ALGA OF THE ARCTIC SEA, 
Species and forms of the Flora of the Arctic Sea. 
Series FLORIDEZ (Lamour.) Berrn. ') 
Bangiaceen. Lamour. Essai p. 115; lim. mut. 
Fam. CORALLINACEA (Lamour.) Hauck. 
“Meeresalg. p. 19; Lamour. Hist. Polyp. p. 224. 
Gen. Corallina (Tourn.) Lamour. 
Hist. Polyp. p. 275; Tourn. Inst. Herb. p. 570; char. mut. 
Corallina officinalis L. 
Fauna Suec. p. 539. 
f. typica. 
Descr. Corallina officinalis ArgscH. in J. G. Ag. Spec. Alg. 2, p. 562. 
Fig. » » Harv. Phye. Brit. t. 222. 
Hesice. » » ArgscH. Alg. Scand. exsice. N:r 8. 
f. flexilis nob. 
f. dense caspitosa, 10 cm. alta; fronde quam in forma typica graciliore et flexiliore, ramosissima, ramis 
ramulisque plus minus fasciculato-congestis, ramulis oppositis, alternis, subsecundis, ultimorum ordinum equalibus, 
elongatis, flexilibus, spe in callo reniformi desinentibus; articulis, summis exceptis, plus minus compressis, 
diametro 2:plo—3:plo longioribus; conceptaculis tetrasporangiferis ramulos vulgo brevissimos, articulo singulo 
compositos, interdum longiores, articulatos terminantibus; tetraporangiis, divisione peracta, obovato-oblongis vel : 
oblongis, 185—190 w. longis, 60—65 «. crassis. 
f. robusta nob. 
f. quam C. officinalis typica major et fere duplo crassior, ponderosa, late rosea; fronde parce et irregu- 
lariter ramosa, ramis ultimi ordinis elongatis, strictis, alternis vel subsecundis, vix oppositis; articulis teretibus, 
subeylindricis, raro subeompressis, obconicis, diametro sesqui- ad 2:plo longioribus. 
Syn. Corallina officinalis Gopi, Algenfl. Weiss. Meer. p. 21. 
» » Kren, Nordl. Alg. p. 11. 
» » Ny]. et Sel. Herb. Fenn. p. 74. 
Remark on the definition of the form. I know perfectly well that in specimens of 
C. officinalis 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 I have cha- 
racterized above under the name of flewilis certainly resembles such specimens. But they 
1) IT quote BertHoLtp as having given the Floridee the limits here accepted, on the ground of his being 
the first that has referred decidedly the Porphyraceze (Bangiacez) to this series. 
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