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Rhodophyta · Red Seaweed

Odonthalia setacea

(Ruprecht) Perestenko
Phylum
Rhodophyta
Class
Florideophyceae
Order
Ceramiales
Family
Rhodomelaceae

Odonthalia setacea

Russian sea brush

Authority
(Ruprecht) Perestenko
Thallus is dark red, markedly compressed, with a conspicuous midrib (at least basally) along the narrow, somewhat sinusoidal main axis, reaching 30 cm (12 in) or taller. Branching is profuse, in a single plane, and branches can terminate in clustered branchlets. Cystocarps are large (to more than 1 mm (0.04 in) diam) and urnshaped.

Habitat

This perennial occurs on rock (occasionally epiphytic) in the low intertidal and subtidal of semiprotected to exposed habitats.

North Pacific Distribution

Bering Sea and Aleutian Islands, Alaska to northern Washington; Russia.

Former scientific names

Atomaria setacea, Odonthalia lyallii

Similar taxa

Odonthalia spp.

References

Last updated December 26, 2010

Photos