154 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



f. rmaosa nob. 



Planta anuotina solitaria, thalli parte cauloidea parce vage ramosa, axi piimario ramisque piolificatioues 

 simplices, raro furcatas, distantes usque digitales et ultra, diaraetro 0,5 — 2 miii., tetvasporangiis maturis dcji- 

 ciendas emittentibus. 

 Fig. Halosaccion ramentaceum f. ramosa tab. nostra 13, lig. 4. 



ci. major nob. 



Prolificationes digitales et ultra, diametro circa 2 mm. 



Syn. Fucus tubulosus Lepech. Comment. Petrop. p. 476. 



p. 7iiinor nob. 



Prolificationes pollicares, diametro 0,5 — 1 mm. 



f. subsimplex Rupr. 



Alg. Och. p. 270. 

 Descr. Halosaccion soboliferum var. subsimplex Rupe. i. c. 

 Fig. » ramentaceum f. subsimplex tab. nostra 13, fig. 3. 



f. densa nob. 



Descr. Scytosiphon ramentaceus Lyngb. Hydr. Dan. p. 61. 

 Fig. Fucus ramentaceus Turn. Hist. Fuc. t. 149. 

 Exsicc. Halosaccion ramentaceum Aresch. Alg. Scand. exsicc. N:o 205. 

 Syn. Dumontia Lepechini Post et Rupe. 111. Alg. p. II. 

 » ramentacea Aeesch. Phyo. Scand. p. 313. 



» » Nyl. et Ssel. Herb. Fenn. p. 74. 



» sobolifera Dickie, Alg. Sutherl. 2, p. 191. 



Fucus barbatus Gunx. F1. Norv. 2. p. 129. 

 » ramentaceus Gcnn. F1. Norv. p. 79. 

 » » Wg. F1. Lapp. p. 504. 



Gracilaria confervoides J. G. Ag. Spetsb. Alg. Bidr. p. 11, sec. spec. 



» » ti procerrima Post, et Rdpr. 111. Alg. p. II— III sec. Rupr. Alg. Och. p. 274. 



Halosaccion fistulosum Rupr. Alg. Och. p. 273. 



» ramentaceum J. G. Ag. Spetsb. Alg. Progr. p. 3; Bidr. p. 11; Gronl. Alg. p. 111. 



» » Croall, F1. Disc. p. 460. 



» » Dickie, Alg. Cumberl. p. 239; Alg. Sutherl. 1, p. 143. 



» » Gobi, Algenfl. Weiss. Meer. p. 38. 



" » Haev. Ner. Amer. 2, p. 194. 



» " Kjellm. Vinteralgv. p. 64; Spetsb. Thall. 1, p. 17; Algenv. Meer. p. 17. 



» » Kleen, Nordl. Alg. p. 18. 



» soboliferum Rupr. Alg. Och. p. 268. 



Halymenia ramentacea Lindbl. Bot. Not. p. 157. 

 Scytosiphon ramentaceus Lyngb. Hydr. Dan. p. 61. 

 Soliera chordalis Asinr. Alg. Hayes, p. 96(?) Cfr. Fael. New Engl. Alg. p. 148. 



Remark on the definition of the form. Halosaccion ramentaceum is a very nmltifonn 

 species in the Arctic Sea. The forms I have recorded and tried to characterize above 

 are far from being the only ones that occur, but the others may be grouped round 

 them. Though it may certainly seem as if the form named by me f. robusta and the 



