161,060 species and infraspecific names are in the database, 22,719 images, 62,646 bibliographic items, 473,224 distributional records.

Caulacanthus okamurae Yamada 1933

Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Gigartinales
Family Caulacanthaceae
Genus Caulacanthus


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Caulacanthus okamurae Yamada
Venice Lagoon; on mussels. 12 Apr 2012. M.D. Guiry. © M.D. Guiry.


Navicula phyllepta Kützing

Caulacanthus okamurae Yamada Venice Lagoon; on mussels
© M.D. Guiry

Publication details
Caulacanthus okamurae Yamada 1933: 278 (as 'Okamurai' )

Published in: Yamada, Y. (1933). Notes on some Japanese algae, V. Journal of the Faculty of Science, Hokkaido Imperial University 2(3): 277-285, pls X-XIII.
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Type species
The type species (lectotype) of the genus Caulacanthus is Caulacanthus ustulatus (Turner) Kützing.

Status of name
This name is of an entity that is currently accepted taxonomically.

Type information
Type locality: Japan: "from Hokkaido down to Formosa" (Index Nominum Algarum). Lectotype: K.Okamura; Prov. Mikawa; 11.vi.1899; SAP (West & Calumpong 1990: 182). Notes: Prov. Mikawa fide West & Calumpong (1990: 182)

Named for Kintaro Okamura (1867-1935), Japanese phycologist.

No synonyms are currently included in AlgaeBase.

Distributional notes
This species has been introduced into the Mediterranean (Verlaque et al. 2015: 115), probably by shipping, being first found at Marseille, France in 2004. Populations in NE Atlantic (Britain and the Channel coast of France) are probably also introduced; it has spread rapidly in Kent in SE England (Tittley 2016). - (4 Nov 2015) - M.D. Guiry

General environment
This is a marine species.

Detailed distribution with sources (Click to Load)

Key references
Athanasiadis, A. (2016). Phycologia Europaea Rhodophyta Vol. I. pp. [i]-xxxxviii, 1-762. Thessaloniki: Published and distributed by the author.

Bárbara, I., García-Redondo, V., Díaz Tapia, P., García-Fernández, A., Piñeiro-Corbeira, C., Peña,, V., Lugilde, J. & Cremades, J. (2019). Adiciones y correcciones a la flora bentónica marina del Atlántico ibérico norte. Acta Botanica Malacitana 44: [1-10], 8 figs.

Guiry, M.D. (2020). The spread of the European adventive Caulacanthus okamurae Yamada (Caulacanthaceae, Rhodophyta) to Ireland. Notulae Algarum 162: 1-5, 2 figs.

Norris, R.E. & Wynne, M.J. (1969 '1968'). Notes on marine algae of Washington and southern British Columbia. III. Syesis 1: 133-146, 28 figs.

Tittley, I. (2016). A new atlas of the seaweeds of Kent. The flora past and present with summaries for Essex, London, Sussex and Pas de Calais. pp. [1]-158, maps, photographs and line drawings. Kent: Kent Field Club.

Verlaque, M., Ruitton, S., Mineur, F. & Boudouresque, C.-F. (2015). CIESM atlas of exotic species of the Mediterranean. Macrophytes. pp. [1]-362, many photographs and maps. Monaco: CIESM Publishers.

West, J.A. & Calumpong, H.P. (1990). New records of marine algae from the Philippines. Micronesica 23(2): 181-190.

Yoshida, T. (1998). Marine algae of Japan. pp. [1-2], 1-25, 1-1222. Tokyo: Uchida Rokakuho Publishing Co., Ltd. [in Japanese]

Created: 22 March 1998 by M.D. Guiry

Verified by: 08 October 2020 by M.D. Guiry

Accesses: This record has been accessed by users 2248 times since it was created.

Verification of data
Users are responsible for verifying the accuracy of information before use, as noted on the website Content page.

(Please note: only references with the binomials in the title are included. The information is from the Literature database.)

Choi, H.-G., Nam, K.W. & Norton, T.A. (2001). No whirlwind romance: typhoons, temperature and the failure of reproduction in Caulacanthus okamurae (Gigartinales, Rhodophyta). European Journal of Phycology 36: 353-358.
Choi, H.G. & Nam, K.W. (2001). Growth, tetrasporogensis, and life history in culture of Caulacanthus okamurae (Gigartinales, Rhodophyta) from Korea. Botanica Marina 44: 315-320.
Guiry, M.D. (2020). The spread of the European adventive Caulacanthus okamurae Yamada (Caulacanthaceae, Rhodophyta) to Ireland. Notulae Algarum 162: 1-5, 2 figs.
Lee, H.B., Lee, J.W., Choi, H.G., Lee, W.J., Kim, J.I. (2001). Morphology and rbcL sequences of Caulacanthus okamurae Yamada (Gigartinales, Rhodophyta) from Korea. Algae. An International Journal of Algal Research 16: 25-34, 11 figs, 2 tables. [in Korean]
Petrocelli, A., Wolf, M.A., Cecere, E., Sciuto, K. & Sfriso, A. (2020). Settlement and spreading of the introduced seaweed Caulacanthus okamurae (Rhodophyta) in the Mediterranean Sea. Diversity 12(129): 1-10, 4 figs.

Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=4407

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2021. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 20 April 2021.

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