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False Laver
Pyropia fallax
Authority:
(S.C.Lindstrom & K.M.Cole) S.C.Lindstrom
North Pacific Distribution:
Aleutian Islands, Alaska, to northern Washington
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Former Scientific Names:
, Porphyra fallax
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Description:
This may be the most common species of Porphyra in Alaska. Thallus is a reddish brown blade, to ~ 50 cm (20 in) long, elongate, with a greenish center, one cell layer thick, and often ruffled along the margin. The margin becomes pale red when female cells are fertilized; male cells are in whitish patches or streaks. Habitat: High to lower mid intertidal rock from winter to early summer, from protected to exposed shores, often associated with sand. Similar taxa: Pyropia abbottiae has darker red female reproductive patches.
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