Gomphonema brasiliense subsp. pacificum Moser, Lange-Bertalot & Metzeltin 1844
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2021
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| author | Ruwer, Daiane Trevisan Rodrigues, Liliana |
| author_facet | Ruwer, Daiane Trevisan Rodrigues, Liliana |
| contents | <p><b><i>Gomphonema brasiliense</i> ssp. <i>pacificum</i></b> Moser, Lange-Bertalot & Metzeltin,</p><p>Biblioth. Diatomol., 38: 185, pl. 50, figs. 1-6. 1998.</p><p>(Figs. 126-128)</p><p>Valves heteropolar, narrowly lanceolate. Apical and basal ends attenuate-rounded. Axial area wide and lanceolate, central area indistinct. Raphe straight, with proximal ends, slightly dilated to pores. Transapical striae short, parallel to radiate toward the ends. Stigma absent. Length: 21-31μm; width: 3.5-5.3 μm; striae 13-14 in 10 μm. <i>Gomphonema brasiliense</i> ssp. <i>pacificum</i> resembles <i>G. brasiliense</i> concerning shape valve and the short striae. <i>G. brasiliense</i> ssp. <i>pacificum</i> differ morphologically by the presence of ends more attenuate and lower valve dimensions, mainly the width values (Metzeltin <i>et al.</i> 2005). This taxon was registered in Brazilian studies of Marquardt & Bicudo (2014) and Medeiros <i>et al.</i> (2018).</p><p><b>Material examined:</b> BRAZIL, MATO GROSSO DO SUL: Taquaruçú, Patos Lake, 23.III.2018, sediment, D.T. Ruwer (Nupélia UEM - 18099-106, 18109, 18113-122).</p><p><b>Occurrence:</b> first citation for Upper Paraná River floodplain.</p> |
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| spellingShingle | Gomphonema brasiliense subsp. pacificum Moser, Lange-Bertalot & Metzeltin 1844 Ruwer, Daiane Trevisan Rodrigues, Liliana Biodiversity Taxonomy Chromista Ochrophyta Bacillariophyceae Naviculales Gomphonemataceae Gomphonema Gomphonema brasiliense Gomphonema brasiliense ssp. pacificum moser, lange-Bertalot & metzeltin, <p><b><i>Gomphonema brasiliense</i> ssp. <i>pacificum</i></b> Moser, Lange-Bertalot & Metzeltin,</p><p>Biblioth. Diatomol., 38: 185, pl. 50, figs. 1-6. 1998.</p><p>(Figs. 126-128)</p><p>Valves heteropolar, narrowly lanceolate. Apical and basal ends attenuate-rounded. Axial area wide and lanceolate, central area indistinct. Raphe straight, with proximal ends, slightly dilated to pores. Transapical striae short, parallel to radiate toward the ends. Stigma absent. Length: 21-31μm; width: 3.5-5.3 μm; striae 13-14 in 10 μm. <i>Gomphonema brasiliense</i> ssp. <i>pacificum</i> resembles <i>G. brasiliense</i> concerning shape valve and the short striae. <i>G. brasiliense</i> ssp. <i>pacificum</i> differ morphologically by the presence of ends more attenuate and lower valve dimensions, mainly the width values (Metzeltin <i>et al.</i> 2005). This taxon was registered in Brazilian studies of Marquardt & Bicudo (2014) and Medeiros <i>et al.</i> (2018).</p><p><b>Material examined:</b> BRAZIL, MATO GROSSO DO SUL: Taquaruçú, Patos Lake, 23.III.2018, sediment, D.T. Ruwer (Nupélia UEM - 18099-106, 18109, 18113-122).</p><p><b>Occurrence:</b> first citation for Upper Paraná River floodplain.</p> |
| title | Gomphonema brasiliense subsp. pacificum Moser, Lange-Bertalot & Metzeltin 1844 |
| topic | Biodiversity Taxonomy Chromista Ochrophyta Bacillariophyceae Naviculales Gomphonemataceae Gomphonema Gomphonema brasiliense Gomphonema brasiliense ssp. pacificum moser, lange-Bertalot & metzeltin, |
| url | https://doi.org/10.5281/zenodo.16415956 |