494 
moil’s E. ramulosa (Meeresalg., p.273) of which I have had a few 
specimens for examination ought to be referred to this species, I 
think it differs widely from the true E. ramulosa (= E. uncinata 
Mohr, E. spinescens Kiitz.). 
This species was found more particularly in sheltered localities 
in the interior of fjords and in shallow water, often intermingled 
with other species of Enteromorplm and forming large tangled masses. 
Found in the following localities: — »Bordo«: Klaksvig (H. J.!); 
0st: the interior of Fundingsfjord(!); Str.: the interior of Kalbakfjord(l); 
Syd: Trangisvaagfjord (!). 
MONOSTROMA (Thur.). 
166. M. fuscum (Post, et Rupr.) Wittr. Rosenv. emend, Gronl. 
Havalg., p. 940. 
This plant is subject to considerable variation in the size and 
form of its cells, but, as pointed out by Rosenvinge (1. c.), it is 
characteristic and easily recognizable by its having 2 chromato- 
phores one at each end of the cells; with regard to the definition 
of this species I quite follow the opinion expressed in Rosen- 
vinge’s description. 
This species generally grows in the sublittoral zone, but may 
also occur in hollows between tide-marks; in the sublittoral zone 
it is met with from a depth of at least 10 fathoms. 
It has been found both on open coasts and in sheltered situa¬ 
tions in the interior of fjords. It grows sometimes on rocks and 
on stony and gravelly bottoms, and sometimes as an epiphyte, 
especially on the stems of Laminaria. 
It was observed from April to December, and is probably 
perennial, as Rosenvinge assumes to be the case along the 
coasts of Greenland. 
Fruiting specimens were found in May, June, July and October. 
This species is very common along the coasts of the Faeroes as 
mentioned tty Rostrup (1. c. p. 88), since the plant which he calls 
Ulva plicata is in reality this species, as has been proved by examining 
the specimens in his herbarium. One among them was, indeed, a small 
specimen of Ulva Lactuca ; on the other hand, Ulva plicata Lyngb. (Hy- 
dropliyt., p. 30) must according to the few, very tiny examples preserved 
in Lyngbye’s Herbarium be referred to M. Grevillei. 
The present species had, however, already been found by Lyng- 
bye, as there is a small, but easily recognizable specimen of it in the 
museum in Copenhagen; this was gathered near »Hojvig prope Thors- 
havn« and called by Lyngb ye y>Ulva mesenteriformis? an Lactuca«, 
