Seanet Mid/Low Intertidal

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Gastroclonium subarticulatum (Turner) Kützing
Phylum Rhodophyta, Class Florideophyceae, Order Rhodymeniales, Family Champiaceae

Thalli 10-26 cm tall, erect, cylindrical in cross section to 2.5 mm diameter; branching irregular to dichotomous; apices of branches hollow with transverse septa; dark red  to greenish-brown depending on location & time of year.

Common, mid- to low intertidal zones & shallow subtidal, protected outer coast; ~seasonal, regrowing from persistent basal portions after winter erosion.

Geo Range: British Columbia to Baja
Synonyms: Gastroclonium coulteri
Similar species:

Mazzaella leptorhynchos (top left & bottom center, mixed w. Rhodymenia pacifica)