Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot; 1999; 287
Synonymy
Planothidium lanceolatum (Brébisson) Round et Bukhtiyarova 1996
Planothidium lanceolatum (Brébisson ex Kützing) Bukhtiyarova 1999
Key references
Van de Vijver B., Wetzel C., Kopalova K., Zidarova R,. Ector L. 2013. Analysis of the type material of Achnanthidium lanceolatum Brébisson ex Kützing (Bacillariophyta) with the description of two new Planothidium species from the Antarctic Region. Fottea, Olomouc. 13(2): 105–117.
Jahn R., Abarca N., Gemeinholzer B., Mora D., Skibbe O., Kulikovskiy M., Gusev E., Kusber W.-H., Zimmermann J. 2017. Planothidium lanceolatum and Planothidium frequentissimum reinvestigated with molecular methods and morphology: four new species and the taxonomic importance of the sinus and cavum. Diatom Research. 32(1): 75-107.
Morphology
Shape
Valves lanceolate with broadly rounded, subrostrate ends.
Symmetry
Isopolar, bilaterally symmetrical, heterovalvar.
Striae
Striae radiate, interrupted on one side of the centre in the rapheless valve by a horseshoe-shaped plain area which is hollow internally.
Axial area
Narrow, linear.
Central area
Large, rectangular or irregular, bordered by 1-3 shorter striae of varying length.
Raphe
Straight with expanded proximal ends and distal ends deflected unilaterally.
SEM morphology
Striae multiseriate, composed of (2)3-4 rows of small areolae with round external openings, and internal openings occluded by cribra.
Valves lanceolate with broadly rounded, subrostrate ends.
Symmetry
Isopolar, bilaterally symmetrical, heterovalvar.
Striae
Striae radiate, interrupted on one side of the centre in the rapheless valve by a horseshoe-shaped plain area which is hollow internally.
Axial area
Narrow, linear.
Central area
Large, rectangular or irregular, bordered by 1-3 shorter striae of varying length.
Raphe
Straight with expanded proximal ends and distal ends deflected unilaterally.
SEM morphology
Striae multiseriate, composed of (2)3-4 rows of small areolae with round external openings, and internal openings occluded by cribra.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Kützing F.T. 1846. Kurze Mittheilung über einige kieselschalige Diatomeen. Botanische Zeitung. 4: 247-248. | Description |
| Moss M.O., Carter J.R. 1982. The Resurrection of Achnanthes rostrata Ostrup. Bacillaria. 5: 157-164. | Morphology; Type Illustration |
| Lange-Bertalot H., Krammer K. 1989. Achnanthes eine Monographie der Gattung mit Definition der Gattung Cocconeis und Nachträgen zu den Naviculaceae. Bibliotheca Diatomologica Vol. 18. 393 pp; 100 pls | Morphology; Type Illustration; Taxonomy |
| Lange-Bertalot H. 1999. Neue Kombinationen von Taxa aus Achnanthes Bory (sensu lato). 6. Lange-Bertalot, H. (ed.), Iconographia Diatomologica. Annotated Diatom Micrographs. Vol. 6. Phytogeography-Diversity-Taxonomy. Koeltz Scientific Books, Königstein, Germany. 276-289 pp | Taxonomy |
| Van de Vijver B., Wetzel C., Kopalova K., Zidarova R,. Ector L. 2013. Analysis of the type material of Achnanthidium lanceolatum Brébisson ex Kützing (Bacillariophyta) with the description of two new Planothidium species from the Antarctic Region. Fottea, Olomouc. 13(2): 105–117. | Morphology; Taxonomy; Type Illustration; |
| Jahn R., Abarca N., Gemeinholzer B., Mora D., Skibbe O., Kulikovskiy M., Gusev E., Kusber W.-H., Zimmermann J. 2017. Planothidium lanceolatum and Planothidium frequentissimum reinvestigated with molecular methods and morphology: four new species and the taxonomic importance of the sinus and cavum. Diatom Research. 32(1): 75-107. | Morphology; Biology; Illustrations; |
This page should be cited as:
Jüttner I. Planothidium lanceolatum (Brébisson ex Kützing) Lange-Bertalot; 1999; 287. In: Jüttner I., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M..
Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms/browsespecies.php?-recid=2366. [Accessed:
].
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Record last modified: 27/12/2020