155,127 species and infraspecific names are in the database, 21,785 images, 59,958 bibliographic items, 434,141 distributional records.

Schizymenia dubyi (Chauvin ex Duby) J.Agardh

Classification:
Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Nemastomatales
Family Schizymeniaceae
Genus Schizymenia

Pictures

click on thumbnail for larger version.

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens on Cystoseira baccata, Ría de Vigo, Galicia, Spain, 2016. 24 Dec 2016. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Ireland. 20 May 2016. M.D. Guiry. © M.D. Guiry.

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Schizymenia dubyi, middle intertidal, Ría de A Coruña, Galicia, Spain, 2013, Ignacio Bárbara" . Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Schizymenia dubyi (Chauvin ex Duby) J.Agardh
Haematocelis rubens stadium over Cystoseira baccata, North of Galicia, Spain, 2012. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

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Antithamnionella shimamurana (Nagai) S.C.Lindstrom & P.W.Gabrielson

Schizymenia dubyi (Chauvin ex Duby) J.Agardh microscope, TS frond; North of Portugal, Mindelo, 2006
© Ignacio Bárbara (barbara@udc.es)

Publication details
Schizymenia dubyi (Chauvin ex Duby) J.Agardh 1851: 171

Published in: Agardh, J.G. (1851). Species genera et ordines algarum, seu descriptiones succinctae specierum, generum et ordinum, quibus algarum regnum constituitur. Volumen secundum: algas florideas complectens. Part 1. pp. [i]-xii, [1]-336 + 337-351 [Addenda and Indices]. Lundae [Lund]: C.W.K. Gleerup.
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Type species
This is the type species (holotype) of the genus Schizymenia.

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

Basionym
Halymenia dubyi Chauvin ex Duby

Type information
Type locality: Cherbourg, France (Womersley & Kraft 1994: 280). Lectotype: STR (Womersley & Kraft 1994: 280). Notes: Cherbourg, Manche, France (Silva et al. 1996: 323).

Eponomy
Named for Jean Étienne Duby (1798-1885), Swiss botanist.

Homotypic Synonym(s)
Halymenia dubyi Chauvin ex Duby 1830
Iridaea dubyi (Chauvin) Montagne 1846
Kallymenia dubyi (Chauvin ex Duby) Harvey 1847
Euhymenia dubyi (Chauvin ex Chauvin) Kützing 1849

Heterotypic Synonym(s)
Schizymenia undulata J.Agardh
Nemastoma minus J.Agardh 1842
Haematocelis rubens J.Agardh 1851
Schizymenia minor (J.Agardh) J.Agardh 1851
Turnerella atlantica Kylin 1930
Haematocelis epiphytica Baardseth 1941

Nomenclatural notes
1851: 169 (Gabriel et al. 2011). - (1 Apr 2011) - Wendy Guiry

General environment
This is a marine species.

Common names

(as Schizymenia dubyi (Chauvin ex Duby) J.Agardh)
English: Starry Liver Weed (Bunker et al. 2010).

Description
Gametophytes: soft and fleshy, brownish-red fronds, 500 mm long, 250 mm broad, irregularly split or lobed, rarely proliferous, with a very short (2-3 mm) stipe from a minute attachment disc. Tetrasporophyte (Haematocelis-phase): thick fleshy crust; difficult to identify and rarely reported.

Habitat
Gametophytes are found in mid-intertidal, large pools and the shallow subtidal (?? m), annual, developing in spring; south-western and western coasts north to St. Kilda and east to Dorset, uncommon; tetrasporophytic crusts are apparently exclusively found in the shallow subtidal. Epilithic, in pools exposed to some wave action, midlittoral to shallow sublittoral, tolerant of some sand cover (Dixon & Irvine 1977: 176).

Key characteristics
Fleshy frond, lack of lobing and, generally, marginal proliferations; when dried onto paper the fertile fronds feel like fine sandpaper to the the touch.

Similar species
Dilsea carnosa is much thicker, commoner, and more cartilaginous, has rounded-spathulate blades, and several blades arise from a relatively large basal disk; Halarachnion ligulatum is thin and filmy, never fleshy;Kallymenia reniformis is commoner in the subtidal generally lobed and the lobes are frequently kidney-shaped.

Detailed distribution with sources (Click to Load)

Key references
Ardré, F. (1980). Observations sur le cycle de développement du Schizymenia dubyi (Rhodophycée, Gigartinale) en culture, et remarques sur certains genres de Némastomacées. Cryptogamie, Algologie 1: 111-140.

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

Boo, S.M. & Ko, Y.D. (2012). Marine plants from Korea. pp. [1] 5-233, many col. photographs. Seoul: Marine & Extreme Genome Research Centre Program. [in Korean]

Braune, W. (2008). Meeresalgen. Ein Farbbildführer zu den verbreiteten benthischen Grün- Braun- und Rotalgen der Weltmeere. pp. [1]-596, pls 1-266 (colour photographs). Ruggell: A.R.G. Gantner Verlag.

Gabriel, D., Schils, T., Parente, M.I., Draisma, S.G.A., Neto, A.I. & Fredericq, S. (2011). Taxonomic studies in the Schizymeniaceae (Nemastomatales, Rhodophyta): on the identity of Schizymenia sp. in the Azores and the generic placement of Nemastoma confusum. Phycologia 50(2): 109-121.

Ramirez, M.E., Nuñez, J.D., Ocampo, E.H., Matula, C.V., Suzuki, M., Hashimoto, T. & Cledón, M. (2012). Schizymenia dubyi (Rhodophyta, Schizymeniaceae), a new introduced species in Argentina. New Zealand Journal of Botany 50(1): 51-58.

Silva, P.C., Basson, P.W. & Moe, R.L. (1996). Catalogue of the benthic marine algae of the Indian Ocean. University of California Publications in Botany 79: 1-1259.

Titlyanov E.A., Titlyanova T.V. & Belous O.S. (2016). Useful marine plants of the Asia-Pacific Region countries. pp. 1-348, Many col. photo. Vladivostok: Dalnauka. [in Russian and English]

Womersley, H.B.S. & Kraft, G.T. (1994). Family Nemastomataceae Schmitz 1892:2, nom. cons.. In: The marine benthic flora of southern Australia. Part IIIA. Bangiophyceae and Florideophyceae (Acrochaetiales, Nemaliales, Gelidiales, Hildenbrandiales and Gigartinales sensu lato). (Womersley, H.B.S. Eds), pp. 270-285. Canberra: Australian Biological Resources Study.

Created: 31 March 1996 by M.D. Guiry

Verified by: 09 February 2017 by M.D. Guiry

Accesses: This record has been accessed by users 9000 times since it was created.

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

Alongi, G. & Cormaci, M. (1993). Un comportement particulier du Schizymenia dubyi de Sicile, et interpretation du cas du Schizymenia epiphytica (Gigartinales, Rhodophyceae). Cryptogamie, Algologie 14(4): 173-181.
Ardré, F. (1977). Sur le cycle du Schizymenia dubyi (Chauvin ex Duby) J. Agardh (Némastomacée, Gigartinale). Revue Algologique, Nouvelle Serie 12: 73-86.
Ardré, F. (1980). Observations sur le cycle de développement du Schizymenia dubyi (Rhodophycée, Gigartinale) en culture, et remarques sur certains genres de Némastomacées. Cryptogamie, Algologie 1: 111-140.
Codomier, L. (1981). On the development of a Foliose Rhodophyte Schizymenia dubyi (J. Ag.) Chauvin. Proceedings of the International Seaweed Symposium 8: 76-82.
Deslandes, E., Zinoun, M. & Potin, P. (1993). Structural analysis of the phycocolloid extracted from Schizymenia dubyi (Gigartinales, Rhodophyceae). Natural Product Letters 2(3): 209-213.
Hughey, J.R. & Miller, K.A. (2009). Noteworthy collection: Schizymenia dubyi (Chauvin ex Duby) J. Agardh, Rhodophyta, new to California. Madroño 56: 64.
Ramirez, M.E., Nuñez, J.D., Ocampo, E.H., Matula, C.V., Suzuki, M., Hashimoto, T. & Cledón, M. (2012). Schizymenia dubyi (Rhodophyta, Schizymeniaceae), a new introduced species in Argentina. New Zealand Journal of Botany 50(1): 51-58.
Sciuto, M., Piattelli, M., Chillemi, R., Furnari, G. & Cormaci, M. (1979). The implication of Haematocelis rubens J. Agardh in the life history of Schizymenia dubyi (Chauvin) J. Agardh (Rhodophyta, Gigartinales): a chemical study. Phycologia 18: 296-302.
Tokida, J. & Masaki, T. (1959). Studies on the reproductive organs of red algae III. On the development of female organs in Schizymenia dubyi, Gymnogongrus flabelliformis, and Rhodymenia pertusa. Bulletin of the Faculty of Fisheries Hokkaido University 10: 87-96.

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Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2019. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 25 April 2019.

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