ECOLOGICAL TERMINOLOGY APPLIED TO MARINE ALGAE 45 
cases successive storeys, but it will be seen that the sub-littoral 
habitat would be a great drawback in actual delineation of group 
boundaries. 
Borgesen’s methods of nomenclature will be seen from the 
following (p. 711) :— 
Of the formations of exposed coasts (littoral region), he recognises 
among others a Hildenbrantia formation consisting of //t/denbrantia 
rosea, Ralfsia verrucosa, and blue-green Algze; a chlorophycez for- 
mation consisting of Prastola crispa, Enteromorpha intestinals, 
and Rhizoclonium riparium; and a porphyra association found 
under the chlorophyceze formation, and consisting of Porphyra 
umbilicalts. 
It will be recognised that, according to the preceding matter and 
suggestions, the terminology would be as under :— 
The littoral region of exposed coasts being part of the general 
halo-nereid sub-formation, consists of, among others, a Hildenbrantia 
association composed of small or large plant societies of Hz/denbrantia 
rosea, Ralfsia verrucosa, and blue-green Algz ; a chlorophycez as- 
sociation consisting of plant societies of Prastola crispa, Enteromorpha 
intestinalis, and Rhizoclonium riparium; and, existing beneath the 
chlorophyceze association as a lower storey, a plant society of 
Porphyra umbtticalts. 
The following summarised notes may illustrate further the 
suggested method of treatment. 
These brief notes are from observations made by the writer on 
the marine Algze of the Kirkcaldy district of Fife (littoral region). 
Nereid formation of Algze; marine (halo-nereid) sub-formation ; 
littoral region. 
District J—Ravenscraig to Craig Endle ; rocks and sandy beach ; 
creeks and isolated rocks. 
ALG#&.—(1) Fucacez association, with Fucus vesiculosus (minus 
bladders) ; dominant between H. and L.W.M. 
(z) Plant societies of— 
(a) Callithamnion scopulorum.—Extensive, existing beneath 
F,, vesiculosus as a lower storey. 
(6) Enteromorpha compressa.—Not plentiful, on rocks both 
at H. and L.W.M. 
(c) Porphyra laciniata,—Fairly plentiful at L.W.M. 
District JI.—Craig Endle to Dysart harbour; A, a series of 
creeks ; B, a bay with rock areas. 
A. (1) Fucacez association ; 7. vesiculosus (with bladders where 
on creek sides) dominant. 
(2) Plant societies of— 
(a) &. serratus.-—Common. 
(6) £. spiralis—Near H.W.M. ; scarce. 
(c) Pelvetia canaliculata.—In honeycombedrocks near H.W.M.; 
scarce, 
(2) Enteromorpha compressa.—Abundant; due to sewage. 
