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Rhodophyta · Red Seaweed

Callithamnion pikeanum

Harvey
Phylum
Rhodophyta
Class
Florideophyceae
Order
Ceramiales
Family
Callithamniaceae

Callithamnion pikeanum

Beauty bush

Authority
Harvey
Thallus is branched, reddish brown, growing to 10 cm (4 in) tall. Branching is alternate (although appearing radial), dense, giving the thallus a somewhat woolly appearance; the uniseriate branches develop a covering of pigmented cells (cortication) except for the ends of the branches, which remain uncovered and terminate in pointed tips.

Habitat

This perennial is found on bedrock in the high to mid (rarely low) intertidal of semi-exposed to exposed habitats.

North Pacific Distribution

Aleutian Islands, Alaska to southern California; Commander Islands, Russia

Former scientific names

Callithamnion pikeanum var. pacificum, Callithamnion arborescens, Ceratothamnion pikeanum

References

Last updated December 26, 2010

Photos