Rhodophyta · Red Seaweed

Dumontia simplex

Cotton
Phylum
Rhodophyta
Class
Florideophyceae
Order
Gigartinales
Family
Dumontiaceae

Dumontia simplex

Ephemeral spring tubes

Authority
Cotton
Thallus is a pale pink, maroon, or dark reddish-golden, partially hollow, linear-spatulate compressed blade, attenuates toward base, unbranched, somewhat gelatinous, grows to ~10 cm (4 in) tall.

Habitat

A spring ephemeral growing on rock in the low intertidal zone of protected to semi-exposed shores, occasionally in tidepools.

North Pacific Distribution

Aleutian Islands to Southeast Alaska; Korea; Japan; Russia.

Similar taxa

Dilsea, Devaleraea and Palmaria are firmer and usually darker and broader.

Last updated December 26, 2010

Photos