E-Flora BC: Electronic Atlas of the Flora of British Columbia

Analipus japonicus (Harvey) Wynne
bottlebrush seaweed

Introduction to the Algae

© Michael Hawkes  Email the photographer   (Photo ID #17130)

E-Flora BC Static Map
Distribution of Analipus japonicus
Click here to view our interactive map and legend
Details about map content are available here
Click on the map dots to view record details.

Ocean Biogeography Information System (global distribution)

Species Information

Family Description:
Members of this family are upright or crustose. When upright, the lateral branches are of limited growth. The medulla is composed of elongate, parallel, colorless cells surrounded by a transition zone of shorter, colorless cells. The cortex is composed of short, parallel files of pigmented cells, with swollen terminal cells. Cells in the holdfast can have many discoidal chloroplasts. Otherwise, characters are as described for the order.
Species description:
This light to dark brown seaweed has a perennial, encrusting holdfast up to 5 cm (2 in) in diameter. In the spring, erect branches arise from this holdfast, and these persist until late fall. The erect branches are up to 35 cm (14 in) high and have numerous radially-arranged lateral branches. These lateral branches are often distinctly flattened and somewhat curled, and can be up to 3 cm (1.2 in) in length, but they remain unbranched. Both the main axes and the side branches are solid in young individuals but become hollow as they age.

This species commonly grows on rocks that are moderately to fully exposed to strong surf, but is seen occasionally on more protected shores.

Source: North Pacific Seaweeds

Habitat / Range

Bathymetry: mid intertidal
World Distribution: Aleutian Islands, Alaska, to Point Conception, California; western North Pacific

Source: North Pacific Seaweeds

Synonyms and Alternate Names

Chordaria abietina
Halocoelia japonica
Halosaccion japonica
Heterochordaria abietina

Taxonomic and Nomenclatural Links

Additional Range and Status Information Links

Additional Photo Sources

Related Databases

General References