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Rhodophyta · Red Seaweed

Cumathamnion decipiens

(J.Agardh) M.J.Wynne & G.W.Saunders
Phylum
Rhodophyta
Class
Florideophyceae
Order
Ceramiales
Family
Delesseriaceae

Cumathamnion decipiens

Winged rib

Authority
(J.Agardh) M.J.Wynne & G.W.Saunders
Thallus is rose-red to light pink, reaching 25 cm (10 in) or more in height with a prominent midrib throughout with a delicate blade on either side of the midrib. Alternate branching along the midrib produces branches of the same morphology as the main axis, to several orders. Blade narrows basally to a short stipe and small discoidal holdfast.

Habitat

This spring ephemeral occurs on rock in the low intertidal and subtidal to 18 m (59 ft) of semi-protected to semi-exposed habitats.

North Pacific Distribution

Kodiak Archipelago, Alaska to San Luis Obispo County, California

Former scientific names

Delesseria decipiens, Membranoptera decipiens, Apoglossum decipiens

Similar taxa

Membranoptera platyphylla

References

Last updated December 26, 2010

Photos