| Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011 |
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| Sigma M. Peragallo in J. Heribaud et al. 1920, pg. 100 | |
| Generitype | T: Sigma radiata M. Peragallo in J. Heribaud et al. 1920 |
| Designated by | Peragallo, M. in Heribaud et al. (000482) |
| Year Designated | 1920 |
| Nomenclatural status | valid |
| Recent revisions | |
| Comments | Type by monotypy. Peragallo says (in French): "I hesitate to establish this new genus after observing only one frustule. I think it might rather be an abnormal form of Cymbella maculata which is commonly found in the travertine and often with abnormalities more or less obvious." This statement indicates that Peragallo hesitates to accept this genus. Sigma M. Peragallo is clearly designated as "nov. gen. nov. sp.", although it is accepted with hesitation by its author, it is validly published (see Art. 34.1, last sentence). |
| Published in |
Héribaud, J. and Coll. 1920 (ref. 482) Les Diatomées des travertins d'Auvergne Annales de Biologie Lacustre, Vol:10, pp. 5-206 pp., pls 107 |