Niels Jacobsen

Niels Jacobsen

Professor, emeritus

ORCID: 0000-0003-3932-1293

Publication year:
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1 - 50 out of 117Page size: 50
  1. 2024
  2. Published

    The legacy of terrestrial plant evolution on cell wall fine structure

    Fangel, J. U., Sørensen, Klavs Martin, Jacobsen, Niels, Mravec, Jozef, Isager Ahl, Louise, Bakshani, C., Mikkelsen, M. D., Engelsen, Søren Balling, Willats, W. & Ulvskov, Peter, 2024, In: Plant Cell and Environment. 47, 4, p. 1238-1254 17 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  3. 2023
  4. Published

    Cryptocoryne esquerionii (Araceae), a remarkable new species discovered by a citizen scientist in Zamboanga Peninsula, southwestern Philippines

    Mark, A. K. N., Reagan, J. T. V., Wongso, S. & Jacobsen, Niels, 2023, In: Nordic Journal of Botany. 2023, 3

    Research output: Contribution to journal › Journal article › Research › peer-review

  5. Published

    Discovery through citizen science II: Cryptocoryne vinzelii (Araceae), a new species of water trumpet from Basilan Island, Philippines

    Naive, M. A. K., Duhaylungsod, A. B. & Jacobsen, Niels, 2023, In: Taiwania. 68, 3, p. 294-297 4 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  6. Published

    Discovery through citizen science III: Cryptocoryne zamboangensis (Araceae), a new water trumpet discovered in Zamboanga del Norte, Philippines

    Arcebal K. Naive, M., Wongso, S., Paglalunan, A., Ponteras, E. & Jacobsen, Niels, 2023, In: Nordic Journal of Botany. 2023, 11, 5 p., e04181.

    Research output: Contribution to journal › Journal article › Research › peer-review

  7. Published

    New taxonomical considerations and nomenclatural changes in the Cryptocoryne cordata complex (Araceae)

    Jacobsen, Niels, Wongso, S. & Ørgaard, Marian, 2023, In: Aroideana. 46, 3, 23 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  8. Published

    Water-Trumpet (Cryptocoryne): Conservation Action Plan 2023-2033

    Lansdown, R. V., Jacobsen, Niels, Kasselmann, C., Naive, M. A. K., Velautham, E., Watve, A., Wongso, S. & Yakandawala, D., 2023, IUCN SSC Freshwater Plant Specialist Group. 161 p.

    Research output: Book/Report › Report › Research

  9. 2022
  10. Published

    A reassessment of the genus Barclaya (Nymphaeaceae) including three new species

    Jacobsen, Niels, Ganapathy, H., Ipor, I., Jensen, Karen Rysbjerg, Komala, T., Mangsor, K. N. A., Nordin, F. A., Othman, A. S., Rusly, R., Siow, J., Wongso, S. & Ørgaard, Marian, 2022, In: Nordic Journal of Botany. 2022, 5, 41 p., e03392.

    Research output: Contribution to journal › Journal article › Research › peer-review

  11. Published

    Discovery through citizen science: Cryptocoryne paglaterasiana (Araceae), a new endangered species from Tampilisan, Zamboanga del Norte, Western Mindanao

    Naive, M. A. K., Lagud, Y. J. & Jacobsen, Niels, 2022, In: Taiwania. 67, 4, p. 539-543 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  12. Published

    Jan Dirk Bastmeijer: (22 October 1943 – 18 February 2022)

    Jacobsen, Niels & Wongso, S., 2022, In: Aroideana. 45, 2, p. 444-470 27 p.

    Research output: Contribution to journal › Journal article › Research

  13. Published

    New Cryptocoryne (Araceae) from West Kalimantan, Indonesia: a new species and a new interspecific natural hybrid

    Asih, N. P. S., Wongso, S., Hendrik, Bastmeijer, J. D., Reitel, S., Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2022, In: Aroideana. 45, 1, p. 296-312 17 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  14. Published

    On the identity of Cryptocoryne pygmaea (Araceae) from Western Mindanao and the description of a new species from the islands of Palawan and Busuanga

    Naive, M. A. K., Bastmeijer, J. D. & Jacobsen, Niels, 2022, In: Phytotaxa. 572, 3, p. 295-300 6 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  15. Published

    Stories from the Mekong, part 3. Cryptocoryne (Araceae) habitats in the Kok River, Chiang Rai Province, Northern Thailand

    Idei, T., Maneeanakekul, S. & Jacobsen, Niels, 2022, In: Aroideana. 45, 1, p. 281-295 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  16. Published

    The habitats of Cryptocoryne (Araceae) in the Chao Phraya River system: The Nan River and the Yom River in northern Thailand

    Idei, T., Jacobsen, Niels & Maneeanakekul, S., 2022, In: Aroideana. 45, 1, p. 267-280 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  17. 2021
  18. Published

    Josef Bogner — and the genus Cryptocoryne

    Jacobsen, Niels, 2021, In: Aroideana. 44, 1, p. 82-109

    Research output: Contribution to journal › Journal article › Research › peer-review

  19. Published

    Molecular evidence of the hybrid origin of Cryptocoryne xpurpurea Ridl. nothovar. purpurea (Araceae)

    Rosazlina, R., Jacobsen, Niels, Ørgaard, Marian & Othman, A. S., 2021, In: PLoS ONE. 16, 1, 14 p., 0239499.

    Research output: Contribution to journal › Journal article › Research › peer-review

  20. Published

    Neue Veröffentlichungen über Cryptocoryne-Hybriden aus dem Süden West-Malaysias

    Jacobsen, Niels & Muth, H. (Translator), 2021, In: Aqua Planta. 1, p. 13-19 7 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  21. 2020
  22. Published

    Cryptocoryne hybrids (Araceae) 2: Two Cryptocoryne (Araceae) hybrids from southern Peninsular Malaysia

    Jacobsen, Niels, Bastmeijer, J. D., Jensen, Karen Rysbjerg, Othman, A. S. & Ørgaard, Marian, 2020, In: Aroideana. 43, 1&2, p. 240-254 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  23. Published

    Cryptocoryne hybrids (Araceae) 3: Hybrids between Cryptocoryne cordata and Cryptocoryne nurii from southern Peninsular Malaysia

    Jacobsen, Niels, Bastmeijer, J. D., Ganapathy, H., Ipor, I., Jensen, Karen Rysbjerg, Komala, T., Mangsor, K. N. A., Othman, A. S., Rosazlina, R., Siow, J. & Ørgaard, Marian, 2020, In: Aroideana. 43, 1&2, p. 255-284 30 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  24. Published

    Cryptocoryne hybrids (Araceae) 4: A Cryptocoryne hybrid from the Meratus mountains, South Kalimantan, Indonesia

    Wongso, S., Bastmeijer, J. D., Idei, T., Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2020, In: Aroideana. 43, 1&2, p. 285-298 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  25. Published

    Cryptocoryne-Hybriden (Araceae): Cryptocoryne x ikezewaldiae und C. x agusii, zwei neue Hybriden aus West-Kalimantan, Indonesien

    Wongso, S., Bastmeijer, J. D., Hendrik, Jensen, Karen Rysbjerg, Kishi, H., Ørgaard, Marian, Takahashi, N. & Jacobsen, Niels, 2020, In: Aqua Planta. 45, 2, p. 44-57 14 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  26. Published

    Lagenandra ’Cora Bastmeijer’, an artificial hybrid between the Indian L. meeboldii and the Sri Lankan L. thwaitesii (Araceae)

    Bastmeijer, J. D. & Jacobsen, Niels, 2020, In: Aroideana. 43, 3&4, p. 54-58 5 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  27. Published

    A new Cryptocoryne species (Araceae) from the Schwaner mountains, West Kalimantan, Indonesia

    Wongso, S., Hendrik, Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2020, In: Nordic Journal of Botany. 38, 4, 5 p., 02716.

    Research output: Contribution to journal › Journal article › Research › peer-review

  28. Published

    Artificial hybrids between species of Lagenandra (Araceae)

    Bastmeijer, J. D. & Jacobsen, Niels, 2020, In: Aroideana. 43, 3&4, p. 59-96 38 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  29. Published

    Artificial hybrids in Cryptocoryne (Araceae) 6. Hybridization between various species

    Jacobsen, Niels, Bastmeijer, J. D., Idei, T., Wongso, S. & Ørgaard, Marian, 2020, In: Aroideana. 43, 1&2, p. 225-239 15 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  30. Published

    Die Bestäubung der Gattung Cryptocoryne (Araceae)

    Jacobsen, Niels & Ørgaard, Marian, 2020, In: Aqua Planta. 45, 1, p. 4-19 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  31. Published

    In the memory of Josef Bogner

    Jacobsen, Niels, 2020, In: The IAS Newsletter. 42, 2, p. 5-6 2 p.

    Research output: Contribution to journal › Journal article › Research

  32. Published

    Wasserpflanzen in einem Fluss mit Gezeitenzone am Sungai Sedili Kechil, Johor, Malaysia

    Jacobsen, Niels, Ganapathy, H. B., Mangsor, K. N. A., Othman, A. S., Rahman, S. N. A., Rosazlina, R. & Siow, J., 2020, In: Aqua Planta. 45, 4, p. 129-139 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  33. 2019
  34. Published

    Cryptocoryne ciliata var. bogneri - eine neue tetraploide Varietät aus Sarawak

    Jacobsen, Niels, Bastmeijer, J. D., Jensen, Karen Rysbjerg & Ørgaard, Marian, 2019, In: Aqua Planta. 2, p. 52-63 6 p.

    Research output: Contribution to journal › Journal article › Research

  35. Published

    Lagenandra keralensis und L. meeboldii

    Jacobsen, Niels, Bastmeijer, J. D., Wongso, S. & Ørgaard, Marian, 2019, In: Aqua Planta. 3, p. 84-91

    Research output: Contribution to journal › Journal article › Research

  36. Published

    Artificial hybrids in Cryptocoryne (Araceae) 3. Hybridization between species from Borneo

    Jacobsen, Niels, Bastmeijer, J. D., Idei, T., Ipor, I., Wongso, S. & Ørgaard, Marian, 2019, In: Aroideana. 42, 2&3, p. 57-90

    Research output: Contribution to journal › Journal article › Research › peer-review

  37. Published

    Artificial hybrids in Cryptocoryne (Araceae) 4. Hybridization between species from Malay Peninsula and Borneo

    Jacobsen, Niels, Bastmeijer, J. D., Idei, T., Wongso, S. & Ørgaard, Marian, 2019, In: Aroideana. 42, 2&3, p. 91-118

    Research output: Contribution to journal › Journal article › Research › peer-review

  38. Published

    Artificial hybrids in Cryptocoryne (Araceae) 5. Hybridization with species from Sumatera, Indonesia

    Jacobsen, Niels, Bastmeijer, J. D., Waser, A., Wongso, S. & Ørgaard, Marian, 2019, In: Aroideana. 42, 2&3, p. 119-138

    Research output: Contribution to journal › Journal article › Research › peer-review

  39. Published

    Artificial hybrids in Cryptocoryne (Araceae). 1. Hybridization between Sri Lankan species within the 2n = 28 chromosome group

    Jacobsen, Niels & Ørgaard, Marian, 2019, In: Aroideana. 42, 1, p. 76-106

    Research output: Contribution to journal › Journal article › Research › peer-review

  40. Published

    Artificial hybrids in Cryptocoryne (Araceae). 2. Hybridization between species of the Malay Peninsula

    Jacobsen, Niels, Bastmeijer, J. D., Bin Othman, A. S., Sookchaloem, D. & Ørgaard, Marian, 2019, In: Aroideana. 42, 1, p. 107-137

    Research output: Contribution to journal › Journal article › Research › peer-review

  41. Published

    Four new Cryptocoryne (Araceae) from Sumatera, Indonesia: variety and three interspecific natural hybrids

    Wongso, S., Asih, N. P. S., Bastmeijer, J. D., Jensen, Karen Rysbjerg, Reichert, W., Ørgaard, Marian & Jacobsen, Niels, 2019, In: Taiwania. 64, 3, p. 326-338

    Research output: Contribution to journal › Journal article › Research › peer-review

  42. Published

    Natural hybridization – recombination – an ever-ongoing process

    Jacobsen, Niels & Ørgaard, Marian, 2019, In: Thai Forest Bulletin. 47, 1, p. 19-28

    Research output: Contribution to journal › Journal article › Research › peer-review

  43. 2018
  44. Published

    A new tetraploid variety of Cryptocoryne ciliata (Araceae) from Sarawak

    Jacobsen, Niels, Bastmeijer, J. D., Jensen, Karen Rysbjerg & Ørgaard, Marian, 2018, In: Willdenowia. 48, 3, p. 425-432

    Research output: Contribution to journal › Journal article › Research › peer-review

  45. Published

    On the Diptera pollinators of Cryptocoryne (Araceae)

    Jacobsen, Niels & Ørgaard, Marian, 2018, In: Aroideana. 41, 2-3, p. 218-236

    Research output: Contribution to journal › Journal article › Research › peer-review

  46. Published

    The opening twist (ptyxis) of the spathes of Lagenandra and Cryptocoryne (Araceae)

    Jacobsen, Niels, Bastmeijer, J. & Ørgaard, Marian, 2018, In: Aroideana. 41, 2-3, p. 201-217

    Research output: Contribution to journal › Journal article › Research › peer-review

  47. 2017
  48. Published

    Cryptocoryne crispatula (Araceae) in Thailand seen with the help of AFLP glasses

    Jacobsen, Niels, Bastmeijer, J., Christensen, C., Idei, T., Lange, Conny Bruun Asmussen, Orabi, J., Sookchaloem, D., Toneatto, F. & Ørgaard, Marian, 2017, Abstract of 17th Flora of Thailand Conference: Taxonomic knowledge and a sustainable future. p. 143 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  49. Published

    Cryptocoryne crispatula var. Tonkinensis and var. Kubotae

    Jacobsen, Niels, Bastmeijer, J. D. & Ørgaard, Marian, 2017, In: The Aquatic Gardener. 30, 4, p. 24-31 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  50. Published

    Cryptocoryne crispatula var. tonkinensis und var. kubotae

    Jacobsen, Niels, Bastmeijer, J. D., Ørgaard, Marian & Bogner, J. (Translator), 2017, In: Aqua Planta. 3, p. 90-102 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  51. Published

    Natural hybridization – recombination – an ever-ongoing process

    Jacobsen, Niels & Ørgaard, Marian, 2017, Abstract of 17th Flora of Thailand Conference: Taxonomic knowledge and a sustainable future. p. 41 1 p.

    Research output: Chapter in Book/Report/Conference proceeding › Conference abstract in proceedings › Research

  52. Published

    Six new Cryptocoryne taxa (Araceae) from Kalimantan, Borneo

    Wongso, S., Bastmeijer, J. D., Budianto, H., Ipor, I. B., Jensen, Karen Rysbjerg, Ørgaard, Marian & Jacobsen, Niels, 2017, In: Willdenowia. 47, 3, p. 325-339 16 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  53. Published

    Stories from the Mekong, part 2. The Cryptocoryne (Araceae) of Chiang Khan District, Loei Province, Thailand

    Idei, T., Bastmeijer, J. D. & Jacobsen, Niels, 2017, In: Thai Forest Bulletin (Botany). 45, 1, p. 58-78 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  54. 2016
  55. Published

    Cryptocoryne aura (Araceae), a new species from West Kalimantan, Indonesia

    Wongso, S., Ipor, I. B., Tawan, C. S., Budianto, H., Bastmeijer, J. D. & Jacobsen, Niels, 2016, In: Willdenowia. 46, 2, p. 275-282 8 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  56. Published

    Cryptocoryne wongsoi (Araceae), a new species from Sumatera, Indonesia

    Bastmeijer, J. D., Budianto, H., Ipor, I. B., Ørgaard, Marian & Jacobsen, Niels, 2016, In: Aroideana. 39, 2, p. 4-14 11 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  57. Published

    Cryptocoryne ×batangkayanensis (Araceae) und Bemerkungen zu einigen anderen Hybriden

    Jacobsen, Niels, Bastmeijer, J. D., Ipor, I., Jensen, Karen Rysbjerg, Wongso, S. & Ørgaard, Marian, 2016, In: Aqua Planta. 2, p. 54-66 13 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  58. Published

    Cryptocoryne x batangkayensis and notes on some other hybrids

    Jacobsen, Niels, Bastmeijer, J. D., Ipor, I. B., Jensen, Karen Rysbjerg, Wongso, S. & Ørgaard, Marian, 2016, In: The Aquatic Gardener. 29, 4, p. 37-45 9 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

  59. Published

    Hybrids and the Flora of Thailand revisited: hybridization in the South-East Asian genus Cryptocoryne (Araceae)

    Jacobsen, Niels, Bastmeijer, J. D., Bogner, J., Budianto, H., Ganapathy, H. B., Idei, T., Ipor, I. B., Komala, T., Othman, A. S., Rosazlina, R., Siow, J., Wongso, S. & Ørgaard, Marian, 2016, In: Thai Forest Bulletin (Botany). 44, 1, p. 53-73 21 p.

    Research output: Contribution to journal › Journal article › Research › peer-review

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