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Rhodophyta · Red Seaweed

Boreophyllum aestivale

(S.C.Lindstrom & Fredericq) S.C.Lindstrom
Phylum
Rhodophyta
Class
Bangiophyceae
Order
Bangiales
Family
Bangiaceae

Boreophyllum aestivale

Summer laver

Authority
(S.C.Lindstrom & Fredericq) S.C.Lindstrom
Thallus is a monostromatic blade that can vary in color from pale pink to grayish-purple and in shape from circular to elongate, reaching 30 cm (12 in) in diameter. When reproductive, male and female cells are segregated on different halves of the thallus.

Habitat

This ephemeral occurs on rock in summer in the mid to low intertidal of semi-protected to semi-exposed habitats.

North Pacific Distribution

Bering Sea and Aleutian Islands, Alaska to central coast of British Columbia

Former scientific names

Porphyra aestivalis; misidentified as Porphyra umbilicalis

Similar taxa

Pyropia kurogii, a spring species, is usually smaller, more ovate, and a paler color. Boreophyllum spp.

References

Last updated December 26, 2010

Photos