368 
f. ramosa Kjellm., 1. c. 
f. subsimplex Rupr. Kjellm., 1. c. 
I think the Faeroese material may be referred to the three 
above-mentioned forms; f. subsimplex appears to be the most common, 
hut often occurs as a transition to f. robusta. Forma ramosa is rare; 
I have only felt justified in referring a few of the specimens to it. 
Along the Faeroes this species occurred both in sheltered locali¬ 
ties and, at a single place (Svino), on the open sea-shore which 
was, however, more or less sheltered by some low rocks standing 
in the sea opposite to it. According to Jons son’s notes, in the 
latter locality it grew near low-water mark, but in sheltered places 
it must most properly be said to grow in the sublittoral zone, 
though in very shallow water, and the specimens growing at the 
highest places are doubtless occasionally left dry at very low tide. 
Here it grows on large or small stones often associated with nume¬ 
rous green algae, as already noted by Rostrup. 
Tetraspore-bearing plants were found in May, June and No¬ 
vember. 
This species which was first found by Rostrup (1. c. p. 83) ap¬ 
pears to be rare along the coasts of the Faeroes. Besides the well- 
known habitat near Klaksvig (Bordo), where it occurs in abundance 
along the shore, it has been found by Jonsson near the so-called 
»Havn« (Svino) and by me in Vestmanhavn (Str.) where it grew under 
similar circumstances to that near Klaksvig, and likewise associated with 
numerous green algae. 
This species has thus been found only in the northern part of the 
Faeroes and must probably have been carried thither by the polar 
current from off the east coast of Iceland. As already pointed out by 
Rostrup (1. c. p. 16) this seems to* be its southernmost limit of dis¬ 
tribution. 
Order DELESSERIACEAE. 
NITOPHYLLUM Grev. 
32. N. laceratum (Gm.) Grev. J. Agardh, Spec. Alg., Vol. 3, p.469; 
Le Jobs, Alg. mar. de Cherb., p. 136. 
This alga, which is beyond doubt very rare in the Faeroes, 
was found somewhat below low-water mark in a cave near Kvivig, 
occurring here in small pink patches on Lithothamnion polymorphum 
and Corallina officinalis and attaching itself to these algae by means 
of its numerous rhizoids. It is probably this form which Crouan 
(Florule du Finistere, p. 153) called Nitophyllum reptans, as pointed 
out by Le Jolis (1. c.). 
