163,310 species and infraspecific names are in the database, 22,769 images, 62,922 bibliographic items, 478,460 distributional records.

Ralfsia extensa P.Crouan & H.Crouan 1867

Publication details
Ralfsia extensa P.Crouan & H.Crouan 1867: 166

Published in: Crouan, P.L. & Crouan, H.M. (1867). Florule du Finistère contenant les descriptions de 360 espèces nouvelles de sporogames, de nombreuses observations et une synonymic des plantes cellulaires et vasculaires qui croissent spontanément dans ce département, accompagnées de trente-deux planches où est représentée l'organographie, faite sur l'état vif, des fruits et des tissus de 198 genres d'algues avec la plante grandeur naturelle ou réduite plus une planche supplémentaire où sont figures 24 champignons nouveaux. pp. [i]-x, [1]-262, frontisp., pi. 1-31, + 1 suppl. pl., coloured liths. by H. Crouan. Paris & Brest: Friedrich Klincksieck & J.B. et A. Lefournier.
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Type species
The type species (holotype) of the genus Ralfsia is Ralfsia deusta (C.Agardh) Berkeley.

Status of name
This name is currently regarded as a synonym of Pseudolithoderma extensum (P.Crouan & H.Crouan) S.Lund

Type information
Type locality: Brest (Athanasiadis 1996: 188).

Origin of species name
Adjective (Latin), stretched out, extended (Stearn 1973).

Synonym(s)
No synonyms are currently included in AlgaeBase.

General environment
This is a marine species.

No distributions recorded
No distributional records for this taxon have been recorded by AlgaeBase to date. Generally, recent national lists or extensive regional or state lists have been employed to give a general indication of distribution.

Source of current name
Lund, S. (1959). The marine algae of East Greenland. I. Taxonomic Part. Meddelser om Grønland 156(1): 1-247.

Key references
Agardh, J.G. (1882). Till algernes systematik. Nya bidrag. (Andra afdelningen.). Lunds Universitets Års-Skrift, Afdelningen for Mathematik och Naturvetenskap 17(4): 1-134, 3 plates.

De Toni, G.B. (1895). Sylloge algarum omnium hucusque cognitarum. Vol. III. Fucoideae. Vol. 3 pp. [i]-xvi, [1]-638. Patavii [Padua]: Sumptibus auctoris.

Created: 27 October 1998 by M.D. Guiry

Verified by: 23 February 2021 by M.D. Guiry

Accesses: This record has been accessed by users 423 times since it was created.

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Linking to this page: http://www.algaebase.org/search/species/detail/?species_id=13031

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 17 September 2021.

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