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Chlorophyta · Green Seaweed

Acrosiphonia coalita

(Ruprecht) Scagel, Garbary, Golden & M.W.Hawkes
Phylum
Chlorophyta
Class
Ulvophyceae
Order
Ulotrichales
Family
Ulotrichaceae

Acrosiphonia coalita

Green rope

Authority
(Ruprecht) Scagel, Garbary, Golden & M.W.Hawkes
The green thallus forms 10-20 (4-8 in) tall rope-like strands from branched, uniseriate filaments. Branching is lateral, from sides of cells, and cells are longer than broad. The frayed rope appearance is caused by hook-shaped branches that entangle neighboring branches to form the rope-like strands.

Habitat

This species is found on rock in the mid to low intertidal in protected to semi-exposed habitats in spring and early summer.

North Pacific Distribution

Aleutian Islands, Alaska to central California

Former scientific names

Acrosiphonia mertensii, Spongomorpha coalita

Similar taxa

Acrosiphonia arcta, A. duriuscula

References

Last updated December 26, 2010

Photos