Gyrosigma scalprum (Gaillon) Sterrenburg 2007
Current name: Gyrosigma scalprum (Gaillon) Sterrenburg - 02 July 2011. F.A.S. Sterrenburg
Publication Details
Gyrosigma scalprum (Gaillon) Sterrenburg 2007: 495
Published in: Sterrenburg, F.A.S. (2007). Basionym of Gyrosigma scalprum. Diatom Research 22(2): 495.
Request PDFType Species
The type species (holotype) of the genus Gyrosigma is Gyrosigma hippocampus Hassall.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Basionym
Navicula scalprum Gaillon
Type Information
Type locality: France: "bassins dans les ports de mer"; (Turpin 1827: 310)
Description
Valve moderately sigmoid, narrowly lanceolate, gradually tapering to acutely rounded ends, 90-150µm long, 18-22µm wide. Raphe sternum with single curvature, raphe angle +8 to + 11°, straight in the middle portion, gently curving and becoming eccentric near the apex. Central raphe fissures only just extending into the central area, crook-shaped and dimorphic (oppositely deflected to either the convexity or concavity of their raphe branch on the two valves of a frustule). Central area elliptic, symmetric. Terminal areas wide, occupying the entire apex of the valve, with an isolated apical row of minute foramina, at the limit of visibility in the LM. Striae transverse 18-20 in 10µm, longitudinal clearly coarser, 16-18 in 10µm.
Habitat
A marine and estuarine species fairly frequently growing, sometimes as large populations, on marine mudflats and in saltmarshes. So far personally (Sterrenburg) observed on British, French, Dutch, German and Mauritanian (Banc d'Arguin) shores.
Created: 26 April 2002 by M.D. Guiry.
Last updated: 02 July 2011
Verification of Data
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Nomenclatural note
This combination was first introduced by Sterrenberg (1992: 143) but was invalid at this time as the basionym was incompletely cited; Sterrenberg (2007: 495) validated the name. - (16 September 2013) - M.D. Guiry
Taxonomic note
This species was equated - with some reserve because of its ecology - to the freshwater diatom Gyrosigma acuminatum (Kützing) Rabenhorst by W. Smith in 1852. It has also been ranked (e.g. in the Catalogue of Tempère et Peragallo Ed. 2, slides 143 and 144) as the invalid taxon Gyrosigma hippocampus (Ehrenberg) Hassall. Gy. acuminatum is excluded because it differs in morphology and ecology, Gy. hippocampus is an illegitimate name. - (02 July 2011) - M.D. Guiry
Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=43981
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 02 July 2011. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 12 June 2025
