Frustulia Rabenhorst; 1853; 50
Lange-Bertalot H. 2001. Navicula sensu stricto, 10 genera seperated from Navicula sensu lato, Frustulia. 2. Lange-Bertalot H. (ed.), Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats. A.R.G. Gantner Verlag K.G., Ruggell. 526 pp
Frustules isovalvar, isopolar and bilaterally symmetrical; girdle narrow and so cells usually lie in valve view.
Striae uniseriate, parallel, fine (relative to the moderate size of most species); areolae small, circular, arranged in longitudinal (apical) as well as transapical rows and occluded by fine pore plates (hymenes) at their inner apertures.
Axial area narrow; internally the raphe sternum bears a thick longitudinal rib on each side of the raphe, which combines with the helictoglossa to form a characteristic beaked (‘porte-crayon’) structure at each pole and with the central nodule to form an H- or X-shaped reinforcement at the centre. Central area scarcely differentiated from the axial area or slightly expanded.
Raphe straight or slightly biarcuate, with T- or Y-shaped endings at the centre and poles externally (more rarely bent to one side at the centre).
Girdle composed of several narrow bands, at least one of which is folded into a tube along its length.
Two plate-like chloroplasts per cell, one against each side of the girdle, each with a prominent central pyrenoid.
References are given in chronological order.
|Rabenhorst, L. 1853. Die Süsswasser-Diatomaceen (Bacillarien) für Freunde der Mikroskopie. Eduard Kummer, Leipzig. 72 pp., 9 pls..||Morphology; Taxonomy; Description|
|Lange-Bertalot H. 2001. Navicula sensu stricto, 10 genera seperated from Navicula sensu lato, Frustulia. 2. Lange-Bertalot H. (ed.), Diatoms of Europe, Diatoms of the European Inland waters and comparable habitats. A.R.G. Gantner Verlag K.G., Ruggell. 526 pp||Morphology; Illustrations; Taxonomy|
|Metzeltin D., Lange-Bertalot H. 2007. Tropical diatoms of South America II. Special remarks on biogeography disjunction. Iconographia Diatomologica, Vol. 18., Annotated Diatom Micrographs. Diversity-Taxonomy-Biogeography. H. Lange-Bertalot (ed.), A.R.G. Gantner Verlag K.G. 877 pp||Morphology|
|Beier T., Lange-Bertalot H. 2007. A synopsis of cosmopolitan, rare and new Frustulia species (Bacillariophyceae) from ombrotrophic peat bogs and mineratrophic swamps in New Zealand. Nova Hedwigia. 85(1-2): 73-91.||Morphology; Illustrations; Taxonomy; Ecology|
|Urbánková P., Scharfen V., Kulichová J. 2016. Molecular and automated identification of the diatom genus Frustulia in northern Europe. Diatom Research. 31(3): 217-229.||Morphology; Illustrations|
|Casa V., Mataloni G., Van de Vijver B. 2018. Six new Frustulia species (Bacillariophyta) in Tierra del Fuego peatbogs, Patagonia, Argentina. Fottea, Olomouc. 18(1): 55–71.||Morphology; Illustrations; Taxonomy|