Oscillatoria princeps Vaucher ex Gomont 1892
Oscillatoria princeps Vaucher ex Gomont 1892: 206, pl. VI/6: fig. 9
Publication date: 1 January 1892
This is the type species (lectotype) of the genus Oscillatoria.
Status of Name
This name is of an entity that is currently accepted taxonomically.
Lectotype locality: Vosges, France.; (Drouet 1968: 174) Lectotype: CN; (Drouet 1968: 174) Notes: A "Holotype" an illustration in Gomont (1892, Ann. Sci. Nat. Bot. ser. 7, 16, plate 6, fig. 9") is given by Mühlsteinová et al. (2018:fig. 1 D); however, this can only be a lectotype (iconotype) and a lectotype was slected by Drouet (1968: 174, "type specimen, annotated by Kützing and studied by Gomont") in CN from Vosges in France. Epitype designated by Mühlsteinová & Guiry (2018:1): CBFS A-89-1, desiccated strain CCALA 1115 deposited in Herbarium of the University of South Bohemia, Ceské Budejovice, Czech Republic (CBFS).
This is a freshwatermarinebrackish species.
Trichomes blue-green, highly motile, not constricted at the cross-walls, narrowing toward the often bent ends, 24–36 ?m wide in the central area of the trichome and 14-27 (30) µm wide at the ends. Apical cells nearly hemispherical and often yellowish (together with up to five adjacent cells). Granulation never located at the cross-walls, but fine to larger granules randomly dispersed throughout cells. Cells 2-9 µm long, new cell walls form from the outside of the trichome often before the previous division is finished. Cell wall colourless and thick, necridic cells present, no sheath or calyptra observed (Mühlsteinová et al. 2018: 158).
Blue-green mats first probably growing on the bottom of freshwater reservoirs, later often released and floating at the water surface.
Created: 08 August 2000 by M.D. Guiry.
Last updated: 01 September 2020
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Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 01 September 2020. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 09 February 2023