Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 726 No. 1: 29 Oct. 2025
Type: Article
Published: 2025-10-29
DOI: 10.11646/phytotaxa.726.1.3
Page range: 37-44
Abstract views: 185
PDF downloaded: 5

A new diatom (Bacillariophyta) found in a historic Hustedt sample from Java, description of Humidophila vandevijveri sp. nov.

University of Rzeszów, Department of Ecology and Environmental Protection, Zelwerowicza 4, 35–601, Rzeszów, Poland
Luxembourg Institute of Science and Technology (LIST), Environmental Sensing and Modelling unit (ENVISION), Biodiversity Monitoring and Assessment group (BIODIV), 41 rue du Brill, L-4422 Belvaux, Luxembourg
Algae morphology moss new species historic material

Abstract

During the examination of a historical sample collected by Friedrich Hustedt, an unidentified taxon belonging to the genus Humidophila was observed. This taxon could not be matched with any known species based on the currently available literature. Following a thorough morphological analysis and comparison, the taxon is described as Humidophila vandevijveri sp. nov. Its morphology is documented and illustrated using both light microscopy (LM) and scanning electron microscopy (SEM). Humidophila vandevijveri can be distinguished from closely related species by its stria density and distinctive ultrastructural features. A detailed morphological comparison with similar taxa is provided, along with information on the associated diatom assemblage.

References

  1. Binoy, T.T. & Ray, J.G. (2016) Diversity and Ecology of Diatoms in Oxic Dystrustepts soils under three different vegetation of the Western Ghats, Kerala, South India. Journal of Ecology 111: 465–475.
  2. Chattová, B., Lebouvier, M. & Van de Vijver, B. (2018) Morphological and taxonomical analysis of the ter­restrial diatom genus Humidophila (Bacillariophyta) on Ile Amsterdam and Ile Saint–Paul (Southern Indian Ocean). Phytotaxa 336 (1): 28–42. https://doi.org/10.11646/phytotaxa.336.1.2
  3. Ferreira, P., Kava, V.M. & Ludwig, T.A.V. (2023) Humidophila (Bacillariophyceae) in subtropical mountain springs and subaerial habitats, Paranxiá state, Brazil, with the description of H. piraquarae sp. nov. Fottea 23 (1): 8–20. https://doi.org/10.5507/fot.2022.008
  4. Furey, P.C., Manoylov, K.M. & Lowe, R.L. (2020) New and interesting aerial diatom assemblages from southwestern Iceland. Phytotaxa 428 (3): 173–208. https://doi.org/10.11646/phytotaxa.428.3.2
  5. Goeyers, C. & Van de Vijver, B. (2023) The diatom genus Humidophila (Bacillariophyta) in an historic Delogne sample with the description of 2 new species. Botany Letters 171: 35–49. https://doi.org/10.1080/23818107.2023.2177729
  6. Goeyers, C., Sabbe, K., Verleyen, E., Hamilton, P.B., Kohler, T.J. & Van de Vijver, B. (2024) The genus Humidophila (Bacillariophyta) in Greenland with the description of 2 new species. Fottea 24 (2): 198–221. https://doi.org/10.5507/fot.2024.004
  7. Guiry, M.D. & Guiry, G.M. (2019) AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. Available from: https://www.algaebase.org (accessed 1 April 2025)
  8. Hustedt, F. (1937) Systematische und ökologische Untersuchungen über die Diatomeen-Flora von Java, Bali und Sumatra nach dem Material der Deutschen Limnologischen Sunda-Expedition. Archiv für Hydrobiologie, Supplement 15: 187–295.
  9. Kezlya, E., Glushchenko, A., Maltsev, Y., Genkal, S., Tseplik, N. & Kulikovskiy, M. (2025) Morphological Variability amid Genetic Homogeneity and Vice Versa: A Complicated Case with Humidophila (Bacillariophyceae) from Tropical Forest Soils of Vietnam with the Description of Four New Species. Plants 14 (7): 1069. https://doi.org/10.3390/plants14071069
  10. Kochman-Kędziora, N., Noga, T., Zidarova, R., Kopalova, K. & Van de Vijver, B. (2016) Humidophila komarekiana sp. nov. (Bacillariophyta), a new limnoterrestrial diatom species from King George Island (Maritime Antarctica). Phytotaxa 272: 184–190.
  11. Kopalová, K., Kociolek, J.P., Lowe, R.L., Zidarova, R. & Van de Vijver, B. (2015) Five new species of the genus Humidophila (Bacillariophyta) from the Maritime Antarctic Region. Diatom Research 30: 117–131. https://doi.org/10.1080/0269249X.2014.998714
  12. Kützing, F.T. (1844) Die Kieselschaligen Bacillarien oder Diatomeen. W. Köhne, Nordhausen, pp. 1–152.
  13. Lange-Bertalot, H. & Werum, M. (2001) Diadesmis fukushimae sp. nov. and some other new or rarely observed taxa of the subgenus Paradiadesmis Lange-Bertalot & Le Cohu. Diatom 17: 3–19.
  14. Lowe, R.L., Kociolek, P., Johansen, J.R., Van de Vijver, B., Lange-Bertalot, H. & Kopalová, K. (2014) Humidophila gen. nov., a new genus for a group of diatoms (Bacillariophyta) formerly within the genus Diadesmis: species from Hawai’i, including one new species. Diatom Research 29 (4): 351–360. https://doi.org/10.1080/0269249X.2014.889039
  15. Lowe, R.L., Kociolek, J.P., You, Q., Wang, Q. & Stepanek, J. (2017) Diversity of the diatom genus Humidophila in karst areas of Guizhou, China. Phytotaxa 305 (4): 269–284. https://doi.org/10.11646/phytotaxa.305.4.3
  16. Metzeltin, D., Lange-Bertalot, H. & García-Rodriguez, F. (2005) Diatoms of Uruguay. Compared with other taxa from South America and elsewhere. Iconographia Diatomologica 15: 1–736.
  17. Moser, G., Lange-Bertalot, H. & Metzeltin, D. (1998) Insel der Endemiten. Geobotanisches Phänomen Neukaledonien. Island of endemics New Caledonia - a geobotanical phenomenon. Bibliotheca Diatomologica 38: 1–464.
  18. Reichardt, E. (2022) Neue und wenig bekannte Diatomeen (Bacillariophyceae) an feuchten Felsen im Fränkischen Jura und in den Bayerischen Alpen. Berichte der Bayerischen Botanischen Gesellschaft 92: 148–163.
  19. Rumrich, U., Lange-Bertalot, H. & Rumrich, M. (2000) Diatoms of the Andes. From Venezuela to Patagonia/Tierra del Fuego and two additional contributions. Iconographia Diatomologica 9: 1–673.
  20. Rybak, M., Kochman-Kędziora, N. & Luthfi, O.M. (2022) A new diatom (Bacillariophyta) species from Indonesian urban areas, description of Microcostatus labrisicus sp. nov. Phytotaxa 555 (1): 87–94. https://doi.org/10.11646/phytotaxa.555.1.6
  21. Rybak, M., Christenhusz, M.J.M & Byng, J. (2024) Discovery of a new moss-associated diatom species, Humidophila caribaea (Bacillariophyceae: Diadesmidaceae), from terrestrial habitats of the Mont Caraïbes, Guadeloupe. Phytotaxa 674 (1): 111–120. https://doi.org/10.11646/phytotaxa.674.1
  22. Rybak, M., Peszek, Ł. & Solak, C.N. (2025) Humidophila witkowskii sp. nov.– new terrestrial diatom from Sumatra (Indonesia) with flamboyant morphology. Nova Hedwigia 120 (1–4): 287–297. https://doi.org/10.1127/nova_hedwigia/2025/0990
  23. Rumrich, U., Lange-Bertalot, H. & Rumrich, M. (2000) Diatomeen der Anden. Von Venezuela bis Patagonien/Feuerland. Iconographia Diatomologica 9: 1–649.
  24. Simonsen, R. (1987) Atlas and Catalogue of the Diatom Types of Friedrich Hustedt. J. Cramer, Berlin & Stuttgart, 1–1741.
  25. Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold, K., May, T.W., McNeill, J., Monro, A.M., Prado, J., Price, M.J. & Smith, G.F. (Eds.) (2018) International Code of Nomenclature for algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017. Regnum Vegetabile, Vol. 159. Glashütten: Koeltz Botanical Books, pp. [i]–xxxviii, 1–253.
  26. Yogeshwaran, M., Radhakrishnan, C., Dwivedi, A., Kociolek, J.P. & Karthick, B. (2022) Humidophila manipurensis sp. nov. and the first record of Humidophila bigibba (Hustedt) Lowe, Kociolek, Johansen, Van de Vijver, Lange-Bertalot et Kopalová from Northeast India. Fottea 22 (2): 162–170. https://doi.org/10.5507/fot.2022.001
  27. Van de Vijver, B., Ledeganck, P. & Beyens, L. (2002) Three new species of Diadesmis from soils of Ile de la Possession (Crozet Archipelago, Subantarctic). Cryptogamie Algologie 23 (4): 333–341.
  28. Van de Vijver, B., Goeyers, C., Ector, L. & Kusber, W.-H. (2022) On the taxonomic identity of Humidophila contenta (Grunow) R.L. Lowe & al. and H. biceps (Grunow) Furey & al. (Diadesmidaceae, Bacillariophyta). Notulae Algarum 265: 1–11.
  29. Vouilloud, A.A., Guerrero, J.M., Sala, S.E., Simonato, J. & Kociolek, J.P. (2022) Taxonomy and valve morphology of Humidophila species (Bacillariophyceae) from aerofilous habitats in northeastern Argentina, with the description of four new species. Fottea 22 (1): 56–77. https://doi.org/10.5507/fot.2021.016
  30. Werum, M. & Lange-Bertalot, H. (2004) Diatoms in springs from Central Europe and elsewhere under the influence of hydrologeology and anthropogenic impacts. Iconographia Diatomologica 13: 1–417.

How to Cite

Kochman-Kędziora, N. & Wetzel, C.E. (2025) A new diatom (Bacillariophyta) found in a historic Hustedt sample from Java, description of Humidophila vandevijveri sp. nov.. Phytotaxa 726 (1): 37–44. https://doi.org/10.11646/phytotaxa.726.1.3