Published May 15, 2026 | Version v1
Taxonomic treatment Open

Cocconeis kerguelensis P. Petit 1889

  • 1. Institute for Multidisciplinary Ecological Research in the Salish Sea, Galiano Island, Canada & Advanced Microscopy Facility, Bob Wright Centre, University of Victoria, Victoria, Canada
  • 2. Institute for Multidisciplinary Ecological Research in the Salish Sea, Galiano Island, Canada
  • 3. Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, Canada
  • 4. Hakai Institute, Heriot Bay, Canada & Department of Botany and Biodiversity Research Centre, University of British Columbia, Vancouver, Canada
  • 5. University of Alberta, Edmonton, Canada & Institute for Multidisciplinary Ecological Research in the Salish Sea, Galiano Island, Canada

Description

Cocconeis kerguelensis P. Petit

Cocconeis kerguelensis Petit (1889): 116, pl. X, fig. 5 — Cleve (1895): 182; Bourrelly and Manguin (1950); Desikachary (1988): 7, pl. 506, figs. 1–12.

Description

Valves elliptical, disc-like, length 53.1 (32–55) µm, width 47.9 (38–85) µm. SV: axial area relatively narrow, linear-lanceolate. Striae biseriate, 7 (4–6) in (10) µm, 4 striae at margins, slightly parallel at centre and highly radiate at apices. Areolae 16 (10) in 10 µm. RV (not imaged): raphe ends near margin. Axial area very narrow. Central area has transverse, outwardly narrowed fascia. Striae biseriate, 4 in 10 µm. Areolae 10–12 in 10 µm and crossed near margin by narrow blank band.

Diagnosis

The description above is based on Cleve (1895) and matches well with the images in Desikachary (1988). Only one image of the sternum valve.

Notes

Cocconeis kerguelensis (P. Petit) Cleve 1895 (as Cocconeis costata var. kerguelensis (P. Petit) Cleve 1895 was reported from the Yaquina Estuary, Oregon, USA by Riznyk (1973: 119, Pl. 5, Figs. 3 and 4). iNaturalist ID: 259379467 (Fig. 10).

Notes

Published as part of Webber, Mark, Humphrey, Elaine, van Asselt, Arjan, Chang, Alice, Morien, Evan & Simon, Andrew D. F., 2026, Diatoms (Bacillariophyta) of the Salish Sea, Northeast Pacific: annotated checklist and new species reports, pp. e 189060 in Biodiversity Data Journal 14 on page e189060, DOI: 10.3897/BDJ.14.e189060

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Linked records

Additional details

References

  • Petit P. 1889 Diatomées recoltées dans le voisinage du Cap Horn Hariot P. Mission scientifique du Cap Horn, 1882–1883, vol. 5 (Botanique) Gauthier-Villas Paris, France
  • Cleve P. T. 1895 Synopsis of the naviculoid diatoms. Part II Kongliga Svenska Vetenskaps Akademiens Handlingar 27 3 1 219
  • Bourrelly Pierre, Manguin Eugène 1950 Contribution à l'étude de la flore algale d'eau douce de Madagascar: Le Lac de Tsimbazaza Mémoires de l'Institut scientifique de Madagascar B 2 161 191
  • Desikachary T. V. 1988 Marine diatoms of the Indian Ocean region Desikachary T. V. Atlas of diatoms Fascicle 5 Madras Science Foundation Madras, India 13
  • Cleve P. T. 1895 Synopsis of the naviculoid diatoms. Part II Kongliga Svenska Vetenskaps Akademiens Handlingar 27 3 1219
  • Riznyk R. Z. 1973 Interstitial diatoms from two tidal flats in Yaquina Estuary, Oregon, USA Botanica Marina 16 3 113138 10.1515 / botm. 1973.16. 3.113