Gyrosigma gibbyae G.Reid 2003
Publication Details
Gyrosigma gibbyae G.Reid 2003: 132, figs 9, 18-22 (as 'gibbyi')
Published in: Reid, G. & Williams, D.M. (2003). Systematics of the Gyrosigma balticum complex (Bacillariophyta), including three new species. Phycological Research 51(2): 126-142.
Request PDFPublication date: June 2003
Type 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.
Type Information
Type locality: Raglan Harbour, New Zealand; (Reid & Williams 2003: 132) Holotype: 14 August 1992; BM; 82209 (Reid & Williams 2003: 132, 127)
Description
Valves linear, gently tapering to obtuse apices, making the valve outline slightly sigmoid. Raphe central, sigmoid. Length 75-110 mm, breadth 9-12 mm. Central bars smooth and of equal length. The primary side of the central raphe sternum is continuous with the central bar on that side; there is no hyaline area adjacent to the central bars. The external central raphe fissures are curved in opposite directions, as are the apical endings. Internal central raphe endings rounded. At the apices there is a row of pores, above the helictoglossa; this row is continuous with the marginal row of valve areolae. There is a hyaline area adjacent to the terminal raphe fissure. Longitudinal striae 24-30 in 10 mm, transverse striae 19-24 in 10 mm.
Created: 30 November 2004 by Sandy Lawson.
Last updated: 29 October 2014
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=65931
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 29 October 2014. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 18 April 2024
