Sellaphora auldreekie D.G.Mann & S.M.McDonald; 2004; 477
Key references
Mann D.G., McDonald S. M., Bayer M.M., Droop S.J.M., Chepurnov V.A., Loke R.E., Ciobanu A., Du Buf J.M.H. 2004. The Sellaphora pupula species complex (Bacillariophyceae): morphometric analysis, ultrastructure and mating data provide vidence for five new species. Phycologia. 43(4): 459-482.
Morphology
Size
Length 15-35 µm, width 6.6-8.0 µm; ratio of pole width to
maximum width ca.1 : 2.3 (UK populations, Mann et al 2004).
Shape
Valves elliptical with clearly rostrate ends.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Radiate, becoming parallel or, in larger valves, slightly convergent at the poles 1 9.2-23.7 in 10 µm (UK populations, Mann et al 2004).
Axial area
Narrow linear, straight.
Central area
Acute-angled subfascia, ca. 1/2 to 2/3 of the valve width.
Raphe
Simple filiform, straight; external proximal raphe endings expanded, deflected towards the primary side, internally also deflected towards the primary side, terminal fissures are bent towards the secondary side, raphe-sternum not or scarcely
elevated externally (SEM).
Other features
Polar bars perpendicular to apical axis or very slightly reflexed.
Length 15-35 µm, width 6.6-8.0 µm; ratio of pole width to
maximum width ca.1 : 2.3 (UK populations, Mann et al 2004).
Shape
Valves elliptical with clearly rostrate ends.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Radiate, becoming parallel or, in larger valves, slightly convergent at the poles 1 9.2-23.7 in 10 µm (UK populations, Mann et al 2004).
Axial area
Narrow linear, straight.
Central area
Acute-angled subfascia, ca. 1/2 to 2/3 of the valve width.
Raphe
Simple filiform, straight; external proximal raphe endings expanded, deflected towards the primary side, internally also deflected towards the primary side, terminal fissures are bent towards the secondary side, raphe-sternum not or scarcely
elevated externally (SEM).
Other features
Polar bars perpendicular to apical axis or very slightly reflexed.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Mann D.G., McDonald S. M., Bayer M.M., Droop S.J.M., Chepurnov V.A., Loke R.E., Ciobanu A., Du Buf J.M.H. 2004. The Sellaphora pupula species complex (Bacillariophyceae): morphometric analysis, ultrastructure and mating data provide vidence for five new species. Phycologia. 43(4): 459-482. | Morphology; Taxonomy; Description; Biology; Type Illustration; |
Similar Species
Similar species not published on this website:
This page should be cited as:
Mann D. G. Sellaphora auldreekie D.G.Mann & S.M.McDonald; 2004; 477. 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=4431. [Accessed:
].
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Record last modified: 27/12/2020