366 
nearly all the branches are opposite (cfr. Lyngbyes’s fig. 1. c.), in 
others only a few, and all stages are met with intermediate between 
these extremes. The main filament may attain to a breadth of as 
much as 4 — 5 mm. Small specimens of this variety, consisting 
only of stem and opposite branches, are doubtless identical with 
var. pyramidalis Tliur. (cfr. Le Jolis, Liste, p. 132). 
A peculiar form with numerous small, irregular branches was 
found by Ostenfeld in Trangisvaagfjord. 
A form has sometimes been found at the bottoms of fjords 
with long, almost linear branches, consequently, resembling the 
slender forms of, e. g. Euthora cristata and Rhodophyllis dichotoma 
met with in similar localities. 
Lyngbye’s Herbarium contains only some very imperfect spe¬ 
cimens of his 0 ccespitosum (1. c. p. 69), from which no definite con¬ 
clusion as to its habit can be formed, and which do not appear 
to be particularly characteristic according to his description. 
This species generally grows in the sublittoral zone along the 
coasts of the Faeroes and may occur at fairly considerable depths. 
I dredged it from various depths of about 15 fathoms, and Simmons 
(1. c. p. 266) mentions having found it in the »elittoral« zone; but it 
also occurs in the littoral zone near low-water mark, where it is 
very common in clefts of rock and in caves. It grows attached 
to rocks and stones, as also epiphytic especially on the stems of 
Laminaria hyperborea. Though it grows by preference in the open 
sea along the most exposed coasts, it is not uncommon in the in¬ 
terior of fjords where it is also found epiphytic on Lam. fceroensis. 
Tetraspore-bearing specimens were found in May, June, July, 
August and November, cystocarpic in June, July and August. 
This is a very common species of the Fseroese coasts; it was first 
found by Lyngbye (1. c.), who writes with reference to its habitat: — 
»Habitat ad littora Fseroensia saxis et stipitibus Laminarise saccharinse 
adnascens.« 
29. L. rosea (Harv.). 
Found growing near low-water mark as well as in the sub¬ 
littoral zone in deep water. It prefers exposed coasts. I found 
tetrasporic specimens only in May and June. 
This species appears to be rather rare along the Fseroese coasts. 
Ost.: Molen prope Ejde (!) near low-water mark intermingled with 
Corallina , Ejde (H. S.); Str.: Kalbakfjord (if, specimens very small, and 
determination uncertain; Kolter(!) on Lam. hyperborea at a depth of 
some 10—15 fathoms; Syd.: Kvalbo Ejde (H. S.). 
