Cocconeis imperatrix A. Schmidt
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publication ID |
https://doi.org/ 10.1515/bot-2021-0066 |
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DOI |
https://doi.org/10.5281/zenodo.11094449 |
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persistent identifier |
https://treatment.plazi.org/id/03C487C5-430C-7379-FCCD-FA6372E59DE9 |
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treatment provided by |
Felipe |
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scientific name |
Cocconeis imperatrix A. Schmidt |
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Cocconeis imperatrix A. Schmidt ( Figure 52 View Figures 39–59 )
Literature: (Al-Handal and Wulff 2008b, p. 426, figs. 46– 49; Manguin 1960, p. 305, figs. 358, 359; Riaux-Gobin and Romero 2003, p. 28, figs. 29–31, pl. 20, figs. 1–7, pl. 21, figs. 1–8).
Description: Length 38–65 µm, width 25–44 µm, striae (raphe valve) 3–4 in 10 µm.
Remarks: Scott and Thomas (2005) considered Cocconeis imperatrix as a synonym of Cocconeis fasciolata . Studying valve structure of both taxa in Potter Cove revealed noticeable variation between them so that it can be considered to be a separate entity (Al-Handal and Wulff 2008b).
Ecology and distribution: A marine species mostly reported from Antarctica. Common in Potter Cove.
Cocconeis matsii (Al-Handal, Riaux-Gobin et Wulff) Riaux-Gobin, Compère, Romero et Williams ( Figure 53 View Figures 39–59 ) Literature: (Al-Handal et al. 2010, p. 6, figs. 13–18, 25–34 as C. pinnata var. matsii ).
Description: Length 10–13 µm, width 5–7 µm, striae (rapheless valve) 7–8 in 10 µm.
Remarks: This species was originally described from Potter Cove as C. pinnata var matsii but was considered a distinct species based on stria and areola density and structure ( Riaux-Gobin et al. 2003). These authors, however, did not provide images for specimens but rather established a new combination.
Ecology and distribution: The species has not been reported outside its type locality in Potter Cove. Frequent in the material examined.
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