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Catalogue of Diatom Names, On-Line Version, Updated 19 Sep 2011
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Navicula crucicula var. protracta Grunow in Cleve & Grunow 1880, p. 35; pl. 2, fig. 38
StatusInvalid
Published inCleve, P.T. and Grunow, A. 1880 [ref. 000241]. Beiträge zur Kenntniss der Arctischen Diatomeen. Kongliga Svenska-Vetenskaps Akademiens Handlingar 17(2):121 pp., 7 pls.
Type     Click here to view INA card. Click here to check this name in the INA website.
CollectorAssessment of record accuracyuncertain/not verified
List of nomenclatural synonymsNavicula lundstroemii var. protracta (Grunow in Cleve & Grunow) Kolbe 1927
Navicula protracta (Grunow in Cleve & Grunow) Cleve 1894
Pinnularia protracta (Grunow in Cleve & Grunow) Mayer 1913
Placoneis protracta (Grunow in Cleve & Grunow) Mereschkowsky 1903