Galaxaura barbata R.Chou in W.R.Taylor (1945:139-140)



Taxonomy & Nomenclature

Synonym/s: Galaxaura barbata R.Chou ex W.R.Taylor (1945)


Conservation Status

Missing (Edgar et al., 2010)

Last record: between 9 February and 8 March 1962 (Dawson, 1963); 1963 (Miller et al., 2007); 10 October 1963?

IUCN RedList status: Critically Endangered (Possibly Extinct)



Floreana (Post Office Bay) & Santa Cruz (Tortuga Bay), Galápagos Islands, Ecuador


A third collection site off Santa Cruz (Taylor, 1945) does not have a precise locality.


Biology & Ecology




Holotype: W.R. Taylor No. 34-364 (see: for a fuller account)

One collection of this species is preserved in the University of Southern California Herbarium collection:

AHFH 135735

Full a fuller account, see:






Original scientific description:

Chou, R. (1945). [description of Galaxaura barbata], p. 139-140. In: Taylor, W. R. Pacific marine algae of the Allan Hancock Expeditions to the Galápagos Islands. Allan Hancock Pacific Expeditions 12: i-iv, 1-528, 3 figures, 100 plates.


Other references:

Garske, L. E. (2002). Macroalgas Marinas, pp. 419-439. In: Danulat, E. and Edgar, G. J. (eds.). Reserva Marina de Galápagos. Línea Base de la Biodiversidad. Fundación Charles Darwin/Servicio Parque Nacional Galápagos, Santa Cruz, Galápagos, Ecuador.

Dawson, E. Yale. (1963). New records of marine algae from the Galápagos Islands. Pacific Naturalist 4: 3-23.

Edgar, Graham J., Banks, Stuart A., Brandt, Margarita, Bustamante, Rodrigo H., Chiriboga, Angel, Earle, Sylvia A., Garske, Lauren E., Glynn, Peter W., Grove, Jack S., Henderson, Scott, Hickman, Cleve P., Miller, Kathy A., Rivera, Fernando and Wellington, Gerald M. (2010). El Niño, grazers and fisheries interact to greatly elevate extinction risk for Galapagos marine species. Global Change Biology 16(10): 2876-2890.

M.D. Guiry in Guiry, M.D. & Guiry, G.M. 23 September 2004. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 07 October 2023

Miller, K. A. and Garske, L. E. (2011). Galápagos Seaweeds. unpublished manuscript. 49 pp.

Miller, K. A., Garske, L. and Edgar, G. (2007). Galaxaura barbata. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. ( Downloaded on 02 June 2013.

Silva, P. C. (1966). Status of our knowledge of the Galapagos benthic marine algal flora prior to the Galapagos International Scientific Project, pp. 149-156. In: Bowman, R.I. (ed.): The Galapagos Islands Symposium of the Galapagos International Scientific Project. University of California Press, Berkeley.

Taylor, W. R. (1945). Pacific marine algae of the Allan Hancock Expeditions to the Galápagos Islands. Allan Hancock Pacific Expeditions 12 12(iv): 528 pp.


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