Abstract
The genus Punctastriata D.M.Williams & Round (1988: 278) contains 10 species that are difficult to identify under light microscopy (LM) (Wetzel & Ector 2021, Morales et al. 2021). The difficulty lies in the differentiation of the overall valve outline and striation pattern of these species from members of Staurosirella D.M.Williams & Round (1988: 274). Under scanning electron microscopy (SEM), the striae of species of Punctastriata are typically multiseriate, the consequence of a profuse formation of viminules. In Staurosirella, the striae are composed of long and slender vimines delimiting apically oriented lineolae (Morales et al. 2021), while the production of viminules is incomplete and rare (Morales 2005).
References
Cleve, P.T. & Möller, J.D. (1879) Diatoms. Part V. Esatas Edquists Boktrykeri, Upsala, pp. 217–276.
Czarnecki, D.B. (1994) The freshwater diatoms culture collection at Loras College, Dubuque, Iowa. Proceedings of the 11th International Diatom Symposium. Memoirs of the California Academy of Sciences 17: 155–174.
Ehrenberg, C.G. (1843) Verbreitung und Einfluss des mikroskopischen Lebens in Süd- und Nord-Amerika. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1841: 291–445.
Ehrenberg, C.G. (1849) Passatstaub und Blutregen. Ein grofses organisches unsichtbares Wirken und Leben in der Atmosphäre. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1847: 269–460.
Fitzpatrick, F.A., Waite, I.R., D’Arconte, P.J., Meador, M.R., Mauplin, M.A. & Gurtz, M.E. (1998) Revised methods for characterizing stream habitat in the national water-quality assessment program. Report 98–4052. U.S. Geological Survey Water Resources Investigations, Raleigh, North Carolina, 67 pp.
García, M.L., Maidana, N.I., Ector, L. & Morales, E.A. (2017) Staurosira patagonica sp. nov., a new diatom (Bacillariophyta) from southern Argentina, with a discussion on the genus Staurosira Ehrenberg. Nova Hedwigia Beiheft 146: 103–123. https://doi.org/10.1127/1438-9134/2017/123
Hamilton, P.B. & Siver, P.A. (2008) The type of Fragilaria lancettula Schumann 1867 and transfer to the genus Punctastriata as P. lancettula (Schum.) Hamilton & Siver comb. nov. Diatom Research 23: 355–365. https://doi.org/10.1080/0269249X.2008.9705762
Morales, E.A. (2005) Observations of the morphology of some known and new fragilarioid diatoms (Bacillariophyceae) from rivers in the USA. Phycological Research 53: 113–133. https://doi.org/10.1111/j.1440-1835.2005.tb00363.x
Morales, E.A. (2006) Staurosira incerta (Bacillariophyceae) a new fragilarioid taxon from freshwater systems in the United States with comments on the structure of girdle bands in Staurosira Ehrenberg and Staurosirella Williams et Round. In: Manoylov, K. & Ognjanova, N. (Eds.) Fossil and Recent Phycological studies. Dobrina Temniskova-Topalova. Festschrift. Pensoft Publishers and University Publishing House, Sophia, Bulgaria, pp. 133–145.
Morales, E.A., Wetzel, C.E., Novais, M.H., Buczkó, K., Morais, M.M. & Ector, L. (2019) Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species. Plant Ecology and Evolution 152: 262–264. https://doi.org/10.5091/plecevo.2019.1604
Morales, E.A., Novais, M.H., García, M.L., Maidana, N.I. & Morais, M.M. (2021) A new species of Punctastriata (Bacillariophyta, Fragilariophyceae) from temporary streams in southern Portugal. Phytotaxa 507 (3): 261–265. https://doi.org/10.11646/phytotaxa.507.3.3
Moulton, S.R. II, Kennen, J.G., Goldstein, R.M. & Hambrook, J.A. (2002) Revised Protocols for Sampling Algal, Invertebrate, and Fish Communities as Part of the National Water-Quality Assessment Program. Open-file report 02-150. US Department of the Interior, US Geological Survey, Reston, Virginia, 75 pp. https://doi.org/10.3133/ofr2002150
Van Dam, H., Mertens, A. & Sinkeldam, J. (1994) A coded checklist and ecological indicator values of freshwater diatoms from the Netherlands. Netherlands Journal of Aquatic Ecology 28: 117–33. https://doi.org/10.1007/BF02334251
Van de Vijer, B. & Beyens, L. (2002) Staurosira jolinae sp. nov. and Staurosira circula sp. nov. (Bacillariophyceae), two new fragilarioid diatoms from Subantarctica. Nova Hedwigia 75: 319–331. https://doi.org/10.1127/0029-5035/2002/0075-0319
Van Heurck, H. (1880) Synopsis des Diatomées de Belgique. Atlas. Ducaju et Cie, Anvers, pls. 1–30.
Wetzel, C.E. & Ector, L. (2021) Two new Punctastriata (Bacillariophyta) species from subalpine French lakes. Botany Letters 168: 42–55. https://doi.org/10.1080/23818107.2020.1765865
Williams, D.M. & Round, F.E. (1988 “1987”) Revision of the genus Fragilaria. Diatom Research 2 (2): 267–288. https://doi.org/10.1080/0269249X.1987.9705004
Williams, D.M., Chudaev, D.A. & Gololobova, M.A. (2009) Punctastriata glubokoensis spec. nov., a new species of ‘fragilarioid’ diatom from Lake Glubokoe, Russia. Diatom Research 24: 479–485. https://doi.org/10.1080/0269249X.2009.9705814
Czarnecki, D.B. (1994) The freshwater diatoms culture collection at Loras College, Dubuque, Iowa. Proceedings of the 11th International Diatom Symposium. Memoirs of the California Academy of Sciences 17: 155–174.
Ehrenberg, C.G. (1843) Verbreitung und Einfluss des mikroskopischen Lebens in Süd- und Nord-Amerika. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1841: 291–445.
Ehrenberg, C.G. (1849) Passatstaub und Blutregen. Ein grofses organisches unsichtbares Wirken und Leben in der Atmosphäre. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin 1847: 269–460.
Fitzpatrick, F.A., Waite, I.R., D’Arconte, P.J., Meador, M.R., Mauplin, M.A. & Gurtz, M.E. (1998) Revised methods for characterizing stream habitat in the national water-quality assessment program. Report 98–4052. U.S. Geological Survey Water Resources Investigations, Raleigh, North Carolina, 67 pp.
García, M.L., Maidana, N.I., Ector, L. & Morales, E.A. (2017) Staurosira patagonica sp. nov., a new diatom (Bacillariophyta) from southern Argentina, with a discussion on the genus Staurosira Ehrenberg. Nova Hedwigia Beiheft 146: 103–123. https://doi.org/10.1127/1438-9134/2017/123
Hamilton, P.B. & Siver, P.A. (2008) The type of Fragilaria lancettula Schumann 1867 and transfer to the genus Punctastriata as P. lancettula (Schum.) Hamilton & Siver comb. nov. Diatom Research 23: 355–365. https://doi.org/10.1080/0269249X.2008.9705762
Morales, E.A. (2005) Observations of the morphology of some known and new fragilarioid diatoms (Bacillariophyceae) from rivers in the USA. Phycological Research 53: 113–133. https://doi.org/10.1111/j.1440-1835.2005.tb00363.x
Morales, E.A. (2006) Staurosira incerta (Bacillariophyceae) a new fragilarioid taxon from freshwater systems in the United States with comments on the structure of girdle bands in Staurosira Ehrenberg and Staurosirella Williams et Round. In: Manoylov, K. & Ognjanova, N. (Eds.) Fossil and Recent Phycological studies. Dobrina Temniskova-Topalova. Festschrift. Pensoft Publishers and University Publishing House, Sophia, Bulgaria, pp. 133–145.
Morales, E.A., Wetzel, C.E., Novais, M.H., Buczkó, K., Morais, M.M. & Ector, L. (2019) Morphological reconsideration of the araphid genus Pseudostaurosira (Bacillariophyceae), a revision of Gedaniella, Popovskayella and Serratifera, and a description of a new Nanofrustulum species. Plant Ecology and Evolution 152: 262–264. https://doi.org/10.5091/plecevo.2019.1604
Morales, E.A., Novais, M.H., García, M.L., Maidana, N.I. & Morais, M.M. (2021) A new species of Punctastriata (Bacillariophyta, Fragilariophyceae) from temporary streams in southern Portugal. Phytotaxa 507 (3): 261–265. https://doi.org/10.11646/phytotaxa.507.3.3
Moulton, S.R. II, Kennen, J.G., Goldstein, R.M. & Hambrook, J.A. (2002) Revised Protocols for Sampling Algal, Invertebrate, and Fish Communities as Part of the National Water-Quality Assessment Program. Open-file report 02-150. US Department of the Interior, US Geological Survey, Reston, Virginia, 75 pp. https://doi.org/10.3133/ofr2002150
Van Dam, H., Mertens, A. & Sinkeldam, J. (1994) A coded checklist and ecological indicator values of freshwater diatoms from the Netherlands. Netherlands Journal of Aquatic Ecology 28: 117–33. https://doi.org/10.1007/BF02334251
Van de Vijer, B. & Beyens, L. (2002) Staurosira jolinae sp. nov. and Staurosira circula sp. nov. (Bacillariophyceae), two new fragilarioid diatoms from Subantarctica. Nova Hedwigia 75: 319–331. https://doi.org/10.1127/0029-5035/2002/0075-0319
Van Heurck, H. (1880) Synopsis des Diatomées de Belgique. Atlas. Ducaju et Cie, Anvers, pls. 1–30.
Wetzel, C.E. & Ector, L. (2021) Two new Punctastriata (Bacillariophyta) species from subalpine French lakes. Botany Letters 168: 42–55. https://doi.org/10.1080/23818107.2020.1765865
Williams, D.M. & Round, F.E. (1988 “1987”) Revision of the genus Fragilaria. Diatom Research 2 (2): 267–288. https://doi.org/10.1080/0269249X.1987.9705004
Williams, D.M., Chudaev, D.A. & Gololobova, M.A. (2009) Punctastriata glubokoensis spec. nov., a new species of ‘fragilarioid’ diatom from Lake Glubokoe, Russia. Diatom Research 24: 479–485. https://doi.org/10.1080/0269249X.2009.9705814