Navicula germainii Wallace; 1960; 3
Synonymy
Navicula viridula var. germainii (Wallace) Lange-Bertalot 1993
Key references
Wallace. 1960. Notulae Naturae of the Academy of Natural Sciences Philadelphia. 331.
Lange-Bertalot H. 1993. 85 neue Taxa und über 100 weitere neu definierte Taxa ergänzend zur Süßwasserflora von Mitteleuropa Vol.2/1-4. Bibliotheca Diatomologica 27, J. Cramer, Berlin, Stuttgart. 454 pp
Morphology
Size
30-34 µm long, 7-7.5 µm wide (UK population), 26-40 µm long, 5-8 µm wide (Lange-Bertalot 2001).
Shape
Valves lanceolate with protracted rostrate ends.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Radiate, near apices convergent, 14-15 in 10 µm (UK population). Areolae clearly discernible in LM, 30-32 in 10 µm.
Axial area
Very narrow, linear.
Central area
Rounded, occupying approximately half of the valve width.
Raphe
Straight, filiform with small, teardrop-shaped proximal raphe ends deflected towards primary side of valve, terminal raphe fissures deflected towards secondary side.
SEM morphology
Internally, raphe opens obliquely to the secondary side, accessory rib unilaterally expanded at valve centre.
30-34 µm long, 7-7.5 µm wide (UK population), 26-40 µm long, 5-8 µm wide (Lange-Bertalot 2001).
Shape
Valves lanceolate with protracted rostrate ends.
Symmetry
Isopolar, bilaterally symmetrical.
Striae
Radiate, near apices convergent, 14-15 in 10 µm (UK population). Areolae clearly discernible in LM, 30-32 in 10 µm.
Axial area
Very narrow, linear.
Central area
Rounded, occupying approximately half of the valve width.
Raphe
Straight, filiform with small, teardrop-shaped proximal raphe ends deflected towards primary side of valve, terminal raphe fissures deflected towards secondary side.
SEM morphology
Internally, raphe opens obliquely to the secondary side, accessory rib unilaterally expanded at valve centre.
Literature
References are given in chronological order.
Reference |
Citation |
|---|---|
| Wallace. 1960. Notulae Naturae of the Academy of Natural Sciences Philadelphia. 331. | Morphology; Illustrations; Description; Taxonomy; |
| Lange-Bertalot H. 1993. 85 neue Taxa und über 100 weitere neu definierte Taxa ergänzend zur Süßwasserflora von Mitteleuropa Vol.2/1-4. Bibliotheca Diatomologica 27, J. Cramer, Berlin, Stuttgart. 454 pp | Morphology; Illustrations; Taxonomy |
| Lange-Bertalot H. 2001. Navicula sensu stricto. 10 Genera Separated from Navicula sensu lato. Frustulia. Ruggell, A.R.G. Gantner. 526 pp | Morphology; Illustrations |
| Krammer K., Lange-Bertalot H. 2004. Süßwasserflora Mitteleuropas. Bacillariophyceae. 4. Teil. Achnanthaceae. Kritische Ergänzungen zu Achnanthes s.l., Navicula s.str., Gomphonema. Eds Ettl H., Gärtner G., Heynig H., Mollenhauer D., Gustav Fischer Verlag, Stuttgart. 468 pp | Illustrations |
| Segura-García V., Israde-Alcántara I., Maidana N.I. 2010. The genus Navicula sensu stricto in the upper Lerma Basin, México. I. Diatom Research. 25(2): 367-383. | Ecology |
| Chen S., Zhang W., Zhang J., Jeppesen E., Liu Z., Kociolek J.P., Xu X., Wang L. 2019. Local habitat heterogeneity determines the differences in benthic diatom metacommunities between different urban river types. Science of the Total Environment. 669: 711-720. | Ecology |
This page should be cited as:
Jüttner I., Chudaev D., Ector L. Navicula germainii Wallace; 1960; 3. 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=2947. [Accessed:
].
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Record last modified: 27/12/2020