MARINE ALG OF THE PASSAMAQUODDY REGION 83 
SESSIONAL PAPER No. 38a 
Alaria esculenta latifolia, Post and Rupr.—Common at low-water mark at. all 
outside points. Fig 4, Plate VIII, shows the lateral leaflets upon which the fruit is 
borne. 
Ascophyllum nodosum, Le Jolis——Abundant in the upper two-thirds of the littoral 
zone throughout the region. Fig 5, Plate VIII, shows the rocks near the Biological 
Station covered with this species and Fucus vesciculosus. 
Fucus vesciculosus, Linn.—Abundant in the upper half of the littoral zone 
throughout the region. A form with very long vescicles and long receptacles occurs 
at the Biological Station, and a form with almost spherical receptacles is common on 
Adam island. 
Fucus evanescens, Agardh.—Common in the lower half of the littoral zone at all 
outside points. 
Fucus furcatus, Agardh.—Rare in a tide-pool near low-tide mark at Head har- 
bour. Searce in tide-pools at half-tide mark on Adam island. Common near low- 
tide mark on Bliss island. 
4.—RHODOPHYCE. 
Porphyra umbilicalis, J. Agardh—Common in the littoral zone. Occurs in two 
forms, the umbillicate form of a brownish colour at outside points, and the expanded, 
laciniate form of a red or pale pinkish-green colour at inside points. 
Petrocelis cruenta, J. Agardh—On rocks at Head harbour and at Welchpool, in 
the littoral zone. 
Hildenbrantia rosea, Kuetzing—Common on stones in the lower part of the lit- 
toral zone throughout the region. 
Callithamnion rothii, Lyngbye.—Reported from Grand Manan by Eaton. 
Callithamnion pylaisaet, Mont—Common on weir brush in the sub-littoral zone 
off Navy island. Cystocarps present, May 22. 
Ptilota elegans, Bonnem.—Reported by Eaton from tide-pools on Campobello, and 
from Little Green island near Grand Manan. 
Ptilota serrata, Kuetzing.—Dredged in 10 fathoms off Pendleton’s island, in 27 
fathoms off Harwood island, in 30 fathoms off MacMaster’s island, and in 12 fathoms 
off Three islands, Grand Manan. One specimen found growing in a tide-pool at low- 
tide mark on the Black Ledges. 
Ceramium rubrum, Agardh.—In tide-pools on Bliss island, and on Grand Manan. 
Halosaccion ramentaceum, Agardh.—Common in lower littoral zone at Welchpool 
and in littoral zone at Herring cove, Campobello, and Grand harbour, Grand Manan. 
This species varies greatly in amount of branching. 
Halosaccion ramentaceum gladiatum, Eaton—Common at low-tide mark on 
Spruce island, mostly red and but little inflated. Frequent at low-tide mark in Little 
Letite, very large, brownish and much inflated. Scarce on the Black Ledges, rather 
small and but little inflated, red in young stages, brownish in older stage. Common 
on muddy gravel beach on Adam island. This variety was described .by Eaton from 
Eastport material. Neither this form, nor the species are found at any inside point. 
Ahnfeltia plicata, Fries—Reported from Grand Manan by Eaton. 
35a—6 
