384 



June. Kjell man (1. c.) savs that in the Norwegian Polar Sea it 

 bears cystocarps in August. 



This species does not appear to be very comnion along the eoasts 

 of the Færoes. I found it at the following piaces: — Str. : Kvivig (!); 

 Vaago: opposite Kvivig (!); St. Di mon (!); Syd.: Kvalbo !). 



PTILOTA C. Agardh. 



55. Pt. pectinata (Gunn.) Kjellm., N. I., p. 219 (174); Rosenv., 

 Grønl. Havalg., p. 790; Ptilota plumosa, var. asplenioides Lyngb., 

 Hydrophyt. p. 38. 



I have found some examples of this species, most commonly 

 small ones, which are undoubtedly typical Pt. pectinata; usually 

 this species is easily distinguishable from Pt. plumosa, as Rosen- 

 vinge 1. c. p.790 points out in the case of the Greenland specimens. 

 Rut a single example of the Færoese specimens appeared to he 

 intermediate between this species and Pt. plumosa though most 

 closely related to the latter. Owing to the occurrence of such 

 intermediate forms, Go bi disputes the specific value of Pt. pectinata 

 and Kjell man also mentions having found some intermediate 

 forms, but is of opinion that the species ought to be retained. The 

 material at my disposal was too scanty to allow me to form any 

 defmite opinion on this point. 



This species belongs to the sublittoral zone, and has been 

 found down to a depth of more than 20 fathoms, but in caves it 

 may be met with in very shallow vater. It is found both epiphytic 

 and growing on rocks, on exposed coast as well as in quiet piaces. 

 Cystocarp-bearing piants were found in June, July and August 

 which agrees with what is the case in Nordland (Kleen, l.c.p.20). 



This species is presumably rare along the Færoese eoasts. Bord 6: 

 Haraldssund !); Str.: Kalbakfjord (!); Kvivig (! , Thorshavn (Lyngb.), Gli- 

 versnæs (!). 



As nientioned above, this species was already found by Lyngbye, 

 as the material of Ptilota plumosa var. asplenioides Ag. (Hydrophyt., p. 38) 

 preserved in his herbarium turned out on examination to be small 

 specimens of this species. In Rostrup' S list it is ealled Pt. serrala 

 Kid/.. (1. c. p. 84), this determination being probably due to J. Agardh. 

 Si mm o n s (Le. p. 264) is therefore wrong in saying that it ought to 

 disappear from the list of the Færoese algæ, and also in accusing 

 Lyngbye with some confusion with regard to his var. (3 asplenioides. 

 which Lyngbye very correctly reports both from Greenland and the 

 Færoes. 



