349 
This is an extremely common species of the Fseroese coasts as was 
mentioned by Lyngbye (1. c.), who says: — »Habitat ad insulas Fsero- 
enses saxis in summo refluxus limite ubique et copiosissime adnascens«. 
It was first recorded by Landt, 1. c. p. 232. 
Lyngbye (Hydrophyt., p. 10) does not record Ulva purpurea from 
the Fseroes, but his herbarium contains two specimens which bear this 
name (they are marked: — Ulva purpurea Lgb. Porphyra purpurea Ag. 
Faeroa), I consider these specimens, which are in fact only small frag¬ 
ments, to be identical with P. umbilcalis. 
But Lyngbye (Hydrophyt., 1. c.) reports a var. ft elongata of Ulva 
purpurea as occurring in the Faeroes: »Varietas ad saxa maritima prope 
Qualboe, Faeroae, copiose«. None of the specimens in his herbarium are, 
however, marked with this name, but judging from its habitats, the 
variety in question must be identical with the specimens in his herbarium 
called by him »Ulva umbilicalis var. lanceolata^ , on the label of which 
he has further added »crispa sinuosa. 8. Juli 1817 ad Qualbo, copiose*. 
These specimens are like Porphyra umbilicalis f. linearis. 
ERYTHROTRICHIA Aresch. 
6. E. ceramicola (Lyngb.) Aresch. Kjellm., N. I., p. 242 (193); 
Conferva ceramicola Lyngb., Hydrophyt., p. 144. 
Found along sheltered coast in deep water in about 5—8 fathoms, 
epiphytic on Desmarestia aculeata, but Kleen (1. c. 24) mentions 
having found it epiphytic on littoral algae at Nordland. It had 
spores in June. 
Seems to be rare along the Faeroese coasts; I only found it near 
Ore (Ost.). 
CONCHOCELIS Batters. 
7. C. rosea Batters 1 . Phycological Memoirs edited by Murray, 
Part I. London 1892. 
The chromatophores are differently described. Batters says 
they are star-like, while Schmitz and Hauptfleish (Engler und 
Prantl, Naturlich. Pflanzenfam. I Teil, 2 Abteil. p. 315) say: »an- 
scheinend mit wandstandigem, unregelmaszig scheibenformigem Chro- 
matophor.« In the material I have had for examination, which 
was, however, dried, the chromatophores in the large cells appeared 
to be star-like. 
1 In a paper: Die perforierenden kalkbohrenden Algen und ihre Bedeutung 
in der Natur (Scripta botanica: Fasc. 18. p. 35) published by the Russian investi¬ 
gator Nads on he gives it as his opinion, relying on the investigations made at the 
biological station on Heligoland, that C. rosea is identical with Ostreobium Queketti 
as the latter species is said to be sometimes green and sometimes red. It must 
be owned, that these two species resemble each other very closely, so that his ob¬ 
servations may very possibly prove to be true. Here I have, however, preferred to 
retain Conchocelis rosea. 
