Gyrosigma cali G.Reid 2003
Publication Details
Gyrosigma cali G.Reid 2003: 126, figs 1-74
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
Cali, Columbia. Plankton, mangrove swamp; (Reid & Williams 2003: 140) Holotype: (Reid & Williams 2003: 140)
Description
Valves linear-lanceolate, sigmoid, with only one side being gently curved at each end the opposite side being straight. Length 400-600 mm, width 20-30 mm. Transverse and longitudinal striae equal, 11-13 in 10 mm. Raphe undulate. At the apices there is a horseshoe-shaped row of oblong pores which is broken at the apex by a small hyaline area and is not continuous with the pores of the valve itself. Internally the valve areolae are round and the apical pores are oblong. The areolae are loculate with circular internal openings and slit-like external openings, which are oriented apically. The thickening in the primary side of the raphe sternum is continuous with the central bar. The central bars are large and flattened and are accompanied by a large hyaline area, which is transapically offset. External central raphe fissures deflected in opposite directions, entering into the striae.
Created: 30 November 2004 by Sandy Lawson.
Last updated: 06 January 2010
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Linking to this page: https://www.algaebase.org/search/species/detail/?species_id=65933
Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 January 2010. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 April 2024
