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Peyssonnelia dubyi P.Crouan & H.Crouan 1844

Empire Eukaryota
Kingdom Plantae
Subkingdom Biliphyta
Phylum Rhodophyta
Subphylum Eurhodophytina
Class Florideophyceae
Subclass Rhodymeniophycidae
Order Peyssonneliales
Family Peyssonneliaceae
Genus Peyssonnelia


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Peyssonnelia dubyi P.Crouan & H.Crouan
Ría de A Coruña, Galicia, Spain, 2016,. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Peyssonnelia dubyi P.Crouan & H.Crouan
Ría de A Coruña, Galicia, Spain, 2016,. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).

Peyssonnelia dubyi P.Crouan & H.Crouan
Ría de A Coruña, Galicia, Spain, 2016,. Ignacio Bárbara. © Ignacio Bárbara (barbara@udc.es).


Peyssonnelia dubyi P.Crouan & H.Crouan Ría de A Coruña, Galicia, Spain, 2016,
© Ignacio Bárbara (barbara@udc.es)

Publication details
Peyssonnelia dubyi P.Crouan & H.Crouan 1844: 368, pl. 11: figs 6-8 ('Peyssonelia') (as 'Peyssonelia' )

Published in: Crouan, P.L. & Crouan, H.M. (1844). Observations sur le genre Peyssonelia Dne. Annales des Sciences Naturelles, Botanique, Troisième série 2: 367-368, pl. 11: figs 6-10.
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Type species
The type species (lectotype) of the genus Peyssonnelia is Peyssonnelia squamaria (S.G.Gmelin) Decaisne ex J.Agardh.

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

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

Homotypic Synonym(s)
Hildenbrandia dubyi (P.Crouan & H.Crouan) Kützing 1869
Cruoriella dubyi (P.Crouan & H.Crouan) F.Schmitz 1889

Heterotypic Synonym(s)
Cruoriella codana Rosenvinge 1917
Cruoriella armorica var. de-zwaanii Weber Bosse 1921
Peyssonnelia codana (Rosenvinge) Denizot 1968

Habitat notes
Growing on living maerl, dead shells, and small pebbles associated with maerl beds; depth range: 17-19 m (Pena & Bárbara, 2013). - (6 May 2014) - Wendy Guiry

General environment
This is a marine species.

Thin, dark-red crust, to 30 mm diam.; frequently with concentric surface markings. Relatively loosely attached to the substrate with a well-developed layer of lime on lower surface.

On calcareous encrusting algae and Laminaria hyperborea holdfasts, lower intertidal, widely distributed on western and southern coasts, not uncommon. Epilithic, epiphytic on encrusting corallines, Laminaria holdfasts and occasionally Gracilaria verrucosa etc, and on shells; in shallow pools in lower littoral, on pebbles in sheltered areas, sublittoral to 16 m tolerating a wide range of exposure to currents and wave action (Irvine & Maggs 1983: 59)

Key characteristics
Loose attachment to the substratum, presence of concentric markings on the surface of the thallus.

Similar species
Five species of Peyssonnelia are found in the British Isles and all require expert identification;P. dubyi seems to be the commonest and most widely distributed.

Type information
Type locality: Rade de Brest, Brittany, France. (Athanasiadis 1996: 69). Type: CO (Womersley 1994: 164). Notes: Dawson (1953: 112) Holotype not designated but represented by the original Crouan material in the Herbarium of the Museum of Paris. According to Womersley (1994: 164) the type material comes from Brivatem (Brest, France ). France (Banc de St. Marc, Brest) is cited in Irvine & Maggs 1983: 57). Isotypes: PC, AHFH (54107, slides 1573-4) also cited in Irvine & Maggs.

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.

Denizot, M. (1968). Les algues floridées encroutantes (à l'éxclusion des Corallinacées). pp. [1]-310, 227 figs. Paris: Laboratoire de Cryptogamie, Muséum National d'Histoire Naturelle.

Irvine, L.M. & Maggs, C.A. (1983). Peyssonneliaceae. In: Seaweeds of the British Isles. Volume 1, Rhodophyta. Part 2A Cryptonemiales (sensu stricto), Palmariales, Rhodymeniales. (Irvine, L.M. Eds), pp. 52-61. London: British Museum (Natural History).

Mathieson, A.C. & Dawes, C.J. (2017). Seaweeds of the Northwest Atlantic. pp. [i]-x, 1-798, CIX pls. Amherst & Boston: University of Massachusetts Press.

Nielsen, R. & Lundsteen, S. (2019). Danmarks havalger Bind 1 Rødalger (Rhodophyta). Scientia Danica. Series B, Biologica 7: [1]-398, col. figs and distributional maps.

Peña, V. & Bárbara, I (2013). Non-coralline crustose algae associated with maerl beds in Portugal: a re-appraisal of their diversity in the Atlantic Iberian beds. Botanica Marina 56(5/6): 481-493.

Peña,V. & Bárbara, I. (2010). New records of crustose seaweeds associated with subtidal maërl beds and gravel bottoms in Galicia (NW Spain). Botanica marina 53: 41-62.

Rodríguez-Prieto, C., Ballesteros, E., Boisset, F. & Afonso-Carrillo, J. (2013). Guía de las macroalgas y fanerógamas marinas del Mediterráneo occidental. pp. [1]-656. Barcelona: Ediciones Omega, S.A..

Viera-Rodriguez, M.A., Audiffred, P.A.J., Gil-Rodríguez, M.C., Prud'Homme Van Reine, W.F. & Afonso-Carrillo, J. (1987). Adiciones al catálogo de algas marinas bentónicas para el Archipélago Canario. III. Vieraea 17: 227-235, 10 figs.

Womersley, H.B.S. (1994). The marine benthic flora of southern Australia - Part IIIA - Bangiophyceae and Florideophyceae (Acrochaetiales, Nemaliales, Gelidiales, Hildenbrandiales and Gigartinales sensu lato). pp. 1-508, 167 figs, 4 pls, 4 maps. Canberra: Australian Biological Resources Study.

Xia Bangmei [Xia, B.-M.] (2004). Flora algarum marinarum sinicarum Tomus II Rhodophyta No. III Gelidiales Cryptonemiales Hildenbrandiales. pp. [i]-xxi, 1-203, pls I-XIII. Beijing: Science Press. [in Chinese]

Zinova, A.D. (1967). Opredelitel zelenikh, burikh i krasnich odoroslei juzhnikh morei SSSR [Guide to the green, brown and red algae of the southern seas of USSR]. pp. 1-398. Moscow, Leningrad: Academia Nauk. [in Russian]

Created: 30 March 1996 by M.D. Guiry

Verified by: 12 March 2020 by M.D. Guiry

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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 28 January 2021.

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