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branching, which was sometimes dichotomous, sometimes quite 
irregular. 
Along the coasts of the Faeroes this species grows both in the 
littoral and in the sublittoral zone. In the former it occurs espe¬ 
cially along exposed shores near low-water mark, where it forms 
rather wide-spread almost pure societies more particularly on hori¬ 
zontal surfaces. In the sublittoral it occurs most often as an epi¬ 
phyte, e. g. on Laminaria species and Fncus ; sometimes it may 
also be said to occur in the littoral zone as an epiphyte, as it grows 
by preference on those Laminaria of which the leaf and upper part 
of the stem are left uncovered at low-tide, and then the red bushes 
of Rhodymenia may be seen projecting above the sea together with 
the brown Laminaria. Forms of f. prolifera are most commonly 
met with in the latter habitat, and they can attain to a very con¬ 
siderable size, but f. typica also frequently occurs here in large, 
vigorous examples. On the whole along the Fseroese coasts those 
growing as epiphytes are larger and more vigorous than those 
occurring on rocks, and they are particularly small on rocks in 
