DiatomBase

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DiatomBase name details

Placoneis protracta (Grunow) Mereschkowsky, 1903

AphiaID

670075 (urn:lsid:marinespecies.org:taxname:670075)

Classification

Status

unaccepted (synonym)

Accepted name

Navicula protracta (Grunow) Cleve, 1894

Rank

Species

Parent

Placoneis C. Mereschkowsky, 1903

Original name

Navicula crucicula var. protracta Grunow, 1880

Direct children (2)

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Variety Placoneis protracta var. maxima (Cleve) Mereschkowsky, 1903 accepted as Navicula protracta var. maxima Cleve, 1894 (uncertain > unassessed)
Variety Placoneis protracta var. protracta (Grunow in Cleve & Grunow) Mereschkowsky, 1903 accepted as Navicula crucicula var. protracta Grunow, 1880 (uncertain > unassessed)

Environment

brackish, fresh, ~~terrestrial~~

Fossil range

recent only

Original description

(of Navicula crucicula var. protracta Grunow, 1880) Cleve, P.T. (1894). Synopsis of the Naviculoid Diatoms, Part I. Kongliga Svenska-Vetenskaps Akademiens Handlingar, 26(2): 1-194, 5 pls
page(s): p. 140 [details]

(of Navicula crucicula var. protracta Grunow, 1880) Cleve, P.T. ; Grunow, A. (1880). Beiträge zur Kenntniss der Arctischen Diatomeen. <em>Kongliga Svenska-Vetenskaps Akademiens Handlingar.</em> 17(2): 121 pp., 7 pls.
page(s): p. 35; pl. 2, fig. 38 [details]

Taxonomic citation

Kociolek, J.P.; Blanco, S.; Coste, M.; Ector, L.; Liu, Y.; Karthick, B.; Kulikovskiy, M.; Lundholm, N.; Ludwig, T.; Potapova, M.; Rimet, F.; Sabbe, K.; Sala, S.; Sar, E.; Taylor, J.; Van de Vijver, B.; Wetzel, C.E.; Williams, D.M.; Witkowski, A.; Witkowski, J. (2026). DiatomBase. Placoneis protracta (Grunow) Mereschkowsky, 1903. Accessed at: https://www.diatombase.org/aphia.php?p=taxdetails&id=670075 on 2026-08-10

Taxonomic edit history

Date

action

2012-09-05 09:21:21Z

created

db_admin

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Sources (2)

original description (of Navicula crucicula var. protracta Grunow, 1880) Cleve, P.T. (1894). Synopsis of the Naviculoid Diatoms, Part I. Kongliga Svenska-Vetenskaps Akademiens Handlingar, 26(2): 1-194, 5 pls
page(s): p. 140 [details]

original description (of Navicula crucicula var. protracta Grunow, 1880) Cleve, P.T. ; Grunow, A. (1880). Beiträge zur Kenntniss der Arctischen Diatomeen. <em>Kongliga Svenska-Vetenskaps Akademiens Handlingar.</em> 17(2): 121 pp., 7 pls.
page(s): p. 35; pl. 2, fig. 38 [details]