174 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



The White Sea, probably scarce. 

 I'he American Arctic Sea, see Harvey 1. c. 



Baffin Bay: the west coast of Greenland, according to Lyngbye and specimens in 

 the collections of the Copenhague Museum without any special locality being noted. 



Ptilota pectinata (Gunn.) nob. 

 Fucus pectiiiatus Gonn. F1. Norv. 2, p. 122. 



f. typica. 

 Descr. Ptilota serrata J. G. Ao. Epicr. p. 76. 

 Fit/. » plumosa var. seirata KiJTZ. Tab. Phyc. 12, t. 55. 



Exsicc. » serrata Kjellm. iu Aresch. Alg. Scand. exsicc. N;o 406. 



f. intcijerrima Rdpr. 



Alg. Och. p. 334. 

 Descr. Plumaria pectinata var. integerriraa Rupk. 1. c. 

 Fig- Ptilota pectinata f. integerriraa tab. nostra 15, fig. 1. 



f. litoralis nob. 



f. laxe csespitosa, minuta, 3 — 4 cm. alta, inferne diaraetro raaximo 300 — 380 /(.; ramis confertis, alteris 

 lanceolato-falciforraibus, parce serratis vel integris, alteris multo brevioribns, linearibus, simplicibus vel infra 

 apicera parce et irregulariter pinnulato-ramulosis. Tab. 15, lig. 2 — 5. 

 6'yn. Euciis plumosus y. tenerrimus Wo. Fl. Lapp. p. 501. 



Ptilota plumosa fi. aspknioides Lynob. Hydr. Dan', p. 38. 



» » Post et llupii. 111. Alg. p. II, sec. Gobi, Algenll. Weiss. Meer. p. 44. 



» serrata J. G. Ag. Spetsb. Alg. Bidr. p. 11; Groul. Alg. p. 111. 



11 B Croall, pi. Disc. p. 460. 



i) » DiciiiE, Alg. Sutherl. 1, p. 143; Alg. Cumberl. p. 239. 



)> » Eaton, List. p. 44. 



» » ij. arctica, Gobi, 1. c. 



» » Harv. Ner. Am. 2, p. 222. 



1) » Kjellm. Vinteralgv. p. 64; Spetsb. Thall. 1, p. 26; Algenv. Murin. Meer, p. 22; 



Kariska hafvets algv. p. 22. 

 » » Kleen, Nordl. Alg. p. 20. 



» » Zeller, Zweite d. Polarf. p. 85. 



Remark touching the name and the forms of the species. It seems to be beyond a 

 doubt that the plant figured and described by Gunnerus under the name of Fucus 

 pectinatus 1. c. and tab. 2 fig. 8, is the same that goes at present commonly under the 

 name of Pt. serrata KuTZ. For this reason I have adopted that denomination. Gobi 

 denies its right to be regarded as a separate species, and I must allow that among the 

 specimens, certainly several thousands in number, that have passed between my hands, 

 there have been some few that were allied in character both to Pt. plumosa and Pt. 

 pectinata, although it was scarcely ever difficult to decide to which of these species 

 they ought with more reason to be referred. Having in general found Pt. pectinata 

 independent, I do not hesitate to let it remain a separate species. 



