Polysiphonia paniculata, Neosiphonia paniculata
These specimens of P. paniculata were found growing on boulders in the subtidal of semi-exposed shorelines on Calvert Island. These are specimen collection numbers SCL 15285 and SCL 15279 in the UBC Herbarium Algae Databse. Search the collection numbers in the database for more information on these specimens, or search the species for further occurrences. Images courtesy of Sandra Lindstrom.
Polysiphonia species are finely-branched red algae that form clumps or mats up to 25 cm tall. Branches are thin (measuring less than 2 mm in diameter) and cylindrical. Branching is radial; when branches are spread out in water Polysiphonia species have a fluffy appearance. Polysiphonia species are differentiated from other finely-branched red seaweeds by a unique bundling arrangement of cell filaments; a microscope is required for accurate identification at the genus as well as species level.
The northern Pacific range of P. paniculata extends from the Kodiak Islands in Alaska to Baja California, Mexico. It is also reported along coastlines in South America and Europe, where it may be an introduced species.
iNaturalist
https://www.inaturalist.org/taxa/345131-Polysiphonia-paniculata
The northern Pacific range of P. paniculata extends from the Kodiak Islands in Alaska to Baja California, Mexico. It is also reported along coastlines in South America and Europe, where it may be an introduced species.
iNaturalist
https://www.inaturalist.org/taxa/345131-Polysiphonia-paniculata
References
Druehl, L. 2000. Pacific Seaweeds: A guide to common seaweeds of the west coast. Harbour Publishing: Madeira Park, BC, Canada. P. 107.
Gabrielson, P. W., S. C. Lindstrom and C. J. O’Kelly. (2012). Keys to the Seaweeds and Seagrasses of Southeast Alaska, British Columbia, Washington, and Oregon. Phycological Contribution No. 8, iv + 192 pp.
Guiry, M.D. & Guiry, G.M. (2015). Neosiphonia paniculata (Montagne) J.N.Norris. AlgaeBase. National University of Ireland, Galway. Accessed 06/07/2015.
Lindberg, M. and Lindstrom, S. (2010). Polysiphonia paniculata. Seaweeds of Alaska. Accessed 06/07/2015.
Mondragon, J. and Mondragon, J. (2003). Seaweeds of the Pacific Coast: Common Marine Algae from Alaska to Baja California. Sea Challengers: Monterey, California. P. 68.
O'Clair, R. and Lindstrom, S. Polysiphonia pacifica Hollenberg. In Klinkenberg, Brian. (Ed.). E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. Accessed 06/07/2015.
Authors and editors of page
Kelly Fretwell and Brian Starzomski (2015).
Druehl, L. 2000. Pacific Seaweeds: A guide to common seaweeds of the west coast. Harbour Publishing: Madeira Park, BC, Canada. P. 107.
Gabrielson, P. W., S. C. Lindstrom and C. J. O’Kelly. (2012). Keys to the Seaweeds and Seagrasses of Southeast Alaska, British Columbia, Washington, and Oregon. Phycological Contribution No. 8, iv + 192 pp.
Guiry, M.D. & Guiry, G.M. (2015). Neosiphonia paniculata (Montagne) J.N.Norris. AlgaeBase. National University of Ireland, Galway. Accessed 06/07/2015.
Lindberg, M. and Lindstrom, S. (2010). Polysiphonia paniculata. Seaweeds of Alaska. Accessed 06/07/2015.
Mondragon, J. and Mondragon, J. (2003). Seaweeds of the Pacific Coast: Common Marine Algae from Alaska to Baja California. Sea Challengers: Monterey, California. P. 68.
O'Clair, R. and Lindstrom, S. Polysiphonia pacifica Hollenberg. In Klinkenberg, Brian. (Ed.). E-Flora BC: Electronic Atlas of the Plants of British Columbia. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. Accessed 06/07/2015.
Authors and editors of page
Kelly Fretwell and Brian Starzomski (2015).
