345 



Wittr. et Nordst., Exsicc. = V. B. Wittrock et O. Nordstedt; Algæ 

 aquæ dulcis exsiccatæ præcipue scandinavicæ. Fase. 1 — 29. 



Lyngb. = H. C. Lyngbye. 



Rostr. = E. Rostrup. 



H. S. = Herman G. Simmons. 



H. .1. = Helgi .Jonsson. 



! = F. Børgesen. 



Vid. = Videro. Ost. = Ostero. 

 Str. = Stromo. Syd. = Sydero. 



A. Rhodophyceae. 



I. Bangioideae. 



Order. BANGIACEAE. 



BANGIA Lyngb. 



1. B. fuscopurpurea (Dillw.) Lyngb., Hydrophyt., p.83; Kjellm., 

 N. I., p. 241 (192). 



This speeies belongs to the littoral zone and grows on exposed coast 



at a high level generally considerably above high-water mark, as also 



mentioned by Lyngbye: — »Habitat ad littora Faeroensia in summo 



refluxus limite sæpe denudato.« It prefers sharply inclined rock 



faces where it is liable to be dashed by the spray, and in calm 



weather it can also survive a longer period of desiccation. I never 



came aeross it in rock-pools though Kjellman, 1. c. savs it is to be 



found there. It grows gregariously in large patches often associated 



with Urospora. Specimens bearing reproductive organs were found 



from April to August. The specimen of var. atropurpurea Lyngb. 



(1. c.) in Lyngbye's Herbarium is a fruitbearing plant belonging 



to this species. 



This is a coramon species of the Færoese coasts; it was first men- 

 tioned by Lyngbye. 



PORPHYRA C.Agardh. 



2. P. coccinea J. Ag. Til Algernes Systematik, VI, Ulvaceae, 

 p. 56; Kuckuck, Bemerkungen zur marinen Algenvegetation von 

 Helgoland, II p. 390. 



