Sellaphora blackfordensis D.G.Mann & S.Droop; 2004; 476
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 19-57 µm, width 8.1-9.3 µm (UK populations, Mann et al. 2004).
Shape
Valves narrowly elliptical with boadly rostrate ends.
Striae
Radiate throughout, becoming almost parallel near the poles; 18-22 in 10 µm (UK populations, Mann et al. 2004).
Axial area
Narrow linear, straight.
Central area
Bow-tie-shaped subfascia; somewhat irregular outline due to alternate long and short striae bordering the central area.
Raphe
Simple filiform, clearly undulate; external proximal raphe endings expanded and strongly deflected towards the primary side, internal endings also deflected towards the primary side, terminal fissures bent towards the secondary side; raphe-sternum elevated for almost the whole of its length (SEM).
Other features
Polar bars angled out towards the poles.
Length 19-57 µm, width 8.1-9.3 µm (UK populations, Mann et al. 2004).
Shape
Valves narrowly elliptical with boadly rostrate ends.
Striae
Radiate throughout, becoming almost parallel near the poles; 18-22 in 10 µm (UK populations, Mann et al. 2004).
Axial area
Narrow linear, straight.
Central area
Bow-tie-shaped subfascia; somewhat irregular outline due to alternate long and short striae bordering the central area.
Raphe
Simple filiform, clearly undulate; external proximal raphe endings expanded and strongly deflected towards the primary side, internal endings also deflected towards the primary side, terminal fissures bent towards the secondary side; raphe-sternum elevated for almost the whole of its length (SEM).
Other features
Polar bars angled out towards the poles.
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; |
| Evans K.M., Mann D.G. 2009. A proposed protocol for nomenclaturally effective DNA barcoding of microalgae. Phycologia. 48(1): 70-74. | Taxonomy; Type Illustration |
Similar Species
Similar species not published on this website:
This page should be cited as:
Mann D. G. Sellaphora blackfordensis D.G.Mann & S.Droop; 2004; 476. 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=4429. [Accessed:
].
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Record last modified: 27/12/2020