Niels Jacobsen

Niels Jacobsen

Professor, emeritus


  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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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/ReportReport

  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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal article

  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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal article

  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 journalJournal articlepeer-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 journalJournal article

  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 journalJournal article

  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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 proceedingConference abstract in proceedingsResearch

  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 journalJournal articlepeer-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 journalJournal articlepeer-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 proceedingConference abstract in proceedingsResearch

  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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-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 journalJournal articlepeer-review

  60. Published

    Neuguinea - Rätsel um Cryptocoryne versteegii und Cryptocoryne dewitii

    Jacobsen, Niels, Bastmeijer, J. D., Idei, T., Takahashi, N., Wongso, S. & Ørgaard, Marian, 2016, In: Aqua Planta. 4, p. 130-141 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  61. 2015
  62. Published

    Cryptocoryne nurii var. raubensis, a new calcicolousvariety from Pahang, Peninsular Malaysia

    Jacobsen, Niels, Bastmeijer, J. D., Ganapathy, H. B., Mangsor, K. N. A., Mansor, M., Othman, A. S., Rahman, S. N. A., Rosazlina, R. & Siow, J., 2015, In: The Aquatic Gardener. 28, 2, p. 32-43 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  63. Published

    Cryptocoryne xbatangkayanensis (Araceae), a new hybrid from Sarawak

    Ipor, I. B., Ørgaard, Marian & Jacobsen, Niels, 2015, In: Willdenowia. 45, 2, p. 183-187 5 p.

    Research output: Contribution to journalJournal articlepeer-review

  64. Published

    A new calcicolous variety of Cryptocoryne nurii Furtado (Araceae) from Pahang, Peninsular Malaysia

    Jacobsen, Niels, Bastmeijer, J. D., Ganapathy, H. B., Mangsor, K. N. A., Mansor, M., Sofiman Othman, A., Rahman, S. N. A., Rosazlina, R. & Siow, J., 2015, In: Malayan Nature Journal. 65, 4, p. 230-239 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  65. Published

    A new variety of Cryptocoryne crispatula Engl. (Araceae) from Thailand

    Jacobsen, Niels, Bastmeijer, J., Bongcheewin, B., Idei, T., Sookchaloem, D. & Ørgaard, Marian, 2015, In: Thai Forest Bulletin (Botany). 43, p. 104-110 7 p.

    Research output: Contribution to journalJournal articlepeer-review

  66. Published

    Einige Fundorte vonCryptocoryne crispatula (Araceae) in nördlichen Vietnam

    Jacobsen, Niels, Gersthofen, J. B., Van Du, N., Hong, Q. B. & Ørgaard, Marian, 2015, In: Aqua Planta. 40, 3, p. 92-104 13 p.

    Research output: Contribution to journalJournal articlepeer-review

  67. Published

    The identity of Cryptocoryne crispatula var. tonkinensis (Araceae)

    Jacobsen, Niels, Bastmeijer, J. D., Bogner, J., Du, N. V., Hong, Q. B. & Ørgaard, Marian, 2015, In: Willdenowia. 45, 2, p. 177-182 6 p.

    Research output: Contribution to journalJournal articlepeer-review

  68. Published

    The use of AFLP markers to elucidate relationships within Cryptocoryne (Araceae)

    Jacobsen, Niels, Bastmeijer, J., Christensen, C., Idei, T., Lange, Conny Bruun Asmussen, Orabi, J., Sookchaloem, D., Toneatto, F. & Ørgaard, Marian, 2015, In: Aroideana. 38E, 1, p. 186-193 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  69. Published

    Utilizing next generation sequencing to characterize microsatellite loci in a tropical aquatic plant species Cryptocoryne cordata var. cordata (Araceae)

    Rosazlina, R., Jacobsen, Niels, Ørgaard, Marian & Othman, A. S., 2015, In: Biochemical Systematics and Ecology. 61, p. 385-389 5 p.

    Research output: Contribution to journalJournal articlepeer-review

  70. 2014
  71. Published

    Cryptocoryne matakensis (Araceae, eine neue Art von den Anambas-Inseln (Indonesien)

    Bastmeijer, J. D., Nagasawa, K. & Jacobsen, Niels, 2014, In: Aqua Planta. 2, p. 64-71 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  72. Published

    A new variety of Cryptocoryne versteegii (Araceae) from Irian Jaya Tengah, Indonesia

    Jacobsen, Niels, Bastmeijer, J. D., Edwards, P. J., Johns, R. J., Taka-Hashi, N. & Wongso, S., 2014, In: Willdenowia. 44, 3, p. 385-391 7 p.

    Research output: Contribution to journalJournal articlepeer-review

  73. Published

    OnCryptocoryne cordata var. siamensis

    Jacobsen, Niels & Bastmeijer, J. D., 2014, In: The Aquatic Gardener. 27, 3, p. 29-39 11 p.

    Research output: Contribution to journalJournal articlepeer-review

  74. 2013
  75. Published

    Cryptocoryne ferruginea Engl. from Sekadau, West KAlimantan province, Indonesia

    Bastmeijer, J. D., Kishi, H., Takahashi, N., Wongso, S. & Jacobsen, Niels, 2013, In: The Aquatic Gardener. 26, 4, p. 33-38 6 p.

    Research output: Contribution to journalJournal articlepeer-review

  76. Published

    Eine neue Varietät der Cryptocorryne ferruginea Engl. von Sekadau, West alimantan, Indonesien

    Bastmeijer, J. D., Kishi, H., Takahashi, N., Wongso, S. & Jacobsen, Niels, 2013, In: Aqua Planta. 3, p. 84-93 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  77. Published

    Plant Identifications in the Green Forilegium

    Arnklit, F., Frederiksen, S. E., Hansen, Hans Vilhelm, Jacobsen, Niels, Jørgensen, L. B., Møller, J. D., Rasmussen, Finn N. & Tybjerg, H., 2013, The Green Florilegium. Poulsen, H. K. (ed.). München: Prestel verlag, Munich, p. 225-247

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  78. Published

    Planterne i florilegierne

    Arnklit, F., Frederiksen, S. E., Hansen, Hans Vilhelm, Jacobsen, Niels, Jørgensen, L. B., Møller, J. D., Rasmussen, Finn N. & Tybjerg, H., 2013, Blomster og verdenssyn. Pedersen, E. D. L. F. & Poulsen, H. K. (eds.). Statens Museum for Kunst, p. 197-209 13 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  79. Published

    The plants in the Florilegia

    Arnklit, F., Frederiksen, S., Hansen, Hans Vilhelm, Jacobsen, Niels, Jørgensen, L. B., Møller, J. D., Rasmussen, Finn N. & Tybjerg, H., 2013, Flowers and worlds view. Bjerkhof, S. (ed.). Statens Museum for Kunst, p. 197-209 13 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  80. 2012
  81. Published

    Araceae

    Boyce, P. C., Sookchaloem, D., Hettterscheid, W. L. A., Gusman, G., Jacobsen, Niels, Idei, T. & Van Du, N., 2012, Flora of Thailand: Acoraceae & Araceae. The Forest Herbarium, Vol. 11, Part 2. p. 101-321 + Plates XLV-LVIII

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  82. 2011
  83. Published

    Permanent genetic resources added to molecular ecology resources database 1 june 2011–31 july 2011

    Barker, F. K., Bell, J. J., Bogdanowicz, S. M., Bonatto, S. L., Cezilly, F., Collins, S. M., Dubreuil, C., Dufort, M. J., Eraud, C., Fuseya, R., Heap, E. A., Jacobsen, N., Madders, M., McEwing, R., Michel, A. P., Mougeot, F., Ogden, R. S., Orantes, L. C., Othman, A. S., Parent, É. & 13 others, Pulikdo-Santacruz, P., Rioux-Paré, R., Roberts, M. F., Rosazlina, R., Sakamoto, T., de-León, P. S., Sévigny, J., St-Onge, P., Terraube, J., Tingay, R. E., Tremblay, R., Watanabe, S. & Wattier, R. A., 2011, In: Molecular Ecology Resources. 11, 6, p. 1124-1126 3 p.

    Research output: Contribution to journalJournal articlepeer-review

  84. Published

    Stort potentiale til sikring af fremtidens fødevarer

    Jacobsen, Niels, Jacobsen, S. & Sørensen, Marten, 2011, In: Jord og Viden. 5, p. 14-15 2 p.

    Research output: Contribution to journalJournal article

  85. 2010
  86. Published

    GMO-afgrøder ikke den eneste løsning

    Jacobsen, Niels, Jacobsen, S. & Sørensen, Marten, 12 Jul 2010, In: Berlingske Tidende. p. 9

    Research output: Contribution to journalContribution to newspaper - Feature article

  87. Published

    Araceae

    Heng, L., Guanghua, Z., Boyce, P. C., Murata, J., Hetterscheid, W. L. A., Bogner, J. & Jacobsen, Niels, 2010, Flora of China: Acoraceae through Cyperaceae. Zhengyi, W., Raven, P. H. & Deyuan, H. (eds.). Beijing: Science Press, Beijing, Vol. 23. p. 3-5 3 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  88. Published

    Complex metabolism of aromatic glucosinolates in Pieris rapae caterpillars involving nitrile formation, hydroxylation, demethylation, sulfation, and host plant dependent carboxylic acid formation

    Agerbirk, Niels, Olsen, C. E., Poulsen, E., Jacobsen, Niels & Hansen, Paul Robert, 2010, In: Insect Biochemistry and Molecular Biology. 40, 2, p. 126-137 12 p.

    Research output: Contribution to journalJournal articlepeer-review

  89. Published

    Cryptocoryne: Fischer ex Wydler, Linnaea 5:428. 1830.

    Heng, L. & Jacobsen, Niels, 2010, Flora of China: Acoraceae through Cyperaceae. Zhengyi, W., Raven, P. H. & Deyuan, H. (eds.). Beijing: Science Press, Beijing, Vol. 23. p. 20-22 3 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearchpeer-review

  90. 2009
  91. Published

    Cryptocoryne of peninsular Malaysia

    Othman, A. S., Jacobsen, Niels & Mansor, M., 2009, Penerbit Universiti Sains Malaysia. 102 p.

    Research output: Book/ReportBookpeer-review

  92. 2008
  93. Published

    Crocus - Evolution and domestication

    Ørgaard, Marian & Jacobsen, Niels, 2008, Xth Symposium of the International Organisation of Plant Biosystematists. p. 17 1 p.

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

  94. Published

    Elements of the evolution in the genus Cryptocoryne (Araceae)

    Jacobsen, Niels, Lange, Conny Bruun Asmussen, Bastmeijer, J., Budianto, H., Idei, T., Ipor, I. B., Bin Othman, A. S., Sookchaloem, D., Wongso, S. & Ørgaard, Marian, 2008, Monocots IV: Abstracts. p. 32 1 p.

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

  95. Published

    Phylogeny of selected Cryptocoryne species in Malaysia based on 5' trnK sequence variation of chloroplast DNA

    Sofiman Othman, A. & Jacobsen, Niels, 2008, Systematics 2008, Programme and Abstracts. p. 324 1 p.

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

  96. Published

    The Cryptocoryne (Araceae) of Thailand

    Jacobsen, Niels, Idei, T. & Sookchaloem, D., 2008, Abstracts: Lecture. p. 32 1 p.

    Research output: Chapter in Book/Report/Conference proceedingConference abstract in proceedingsResearch

  97. 2007
  98. Published

    Crocus in the northeastern Mediterranean region

    Ørgaard, Marian, Jacobsen, Niels & Heslop-Harrison, J. S., 2007, In: Chromosome Research. 15, Suppl. 1, p. 10 1 p.

    Research output: Contribution to journalConference abstract in journal

  99. Published

    Cryptocoryne bangkaensis Bastmeijer, ein neuer Name für eine gut bekannte Cryptocoryne von Sumatra (Indonesien)

    Bastmeijer, J. D., Jacobsen, Niels & Bogner, J. (Translator), 2007, In: Aqua Planta. 32, p. 44-55 12 p.

    Research output: Contribution to journalJournal article

  100. Published

    Hordeum L.

    Bothmer, R. V., Baden, C. & Jacobsen, Niels, 2007, Flora of North America: North of Mexico. Vol.24: Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Barkworth, M. E., Capels, K. M., Long, S., Anderton, L. K. & Piep, M. B. (eds.). New York: Oxford University Press, Vol. 24. p. 241-252 12 p.

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  101. Published

    Über die kultur von Barclaya-Arten (Nymphaeaceae)

    Jacobsen, Niels, Ipor, I. B. & Bogner, J. (Translator), 2007, In: Aqua Planta. 32, p. 86-93 8 p.

    Research output: Contribution to journalJournal article

  102. 2006
  103. Published

    Cryptocoryne crispatula Engler var. flaccidifolia N. Jacobsen im südlichen Thailand

    Jacobsen, Niels & Soochaloem, D., 2006, In: Aqua Planta. 31, 1, p. 16-23 8 p.

    Research output: Contribution to journalJournal article

  104. Published

    Cryptocoryne fusca De Wit (Araceae), a new record for Sarawak

    Ipor, I. B., Tawan, C. S. & Jacobsen, Niels, 2006, In: Sarawak Museum Journal. 62, 83, p. 175-184 10 p.

    Research output: Contribution to journalJournal article

  105. Published

    Cryptocoryne zaidiana Ipor & Tawan (Araceae), eine kürzlich neu beschriebene Art aus Sarawak (Malaysia)

    Ipor, I. B., Tawan, C. S. & Jacobsen, Niels, 2006, In: Aqua Planta. 31, 2, p. 52-61 10 p.

    Research output: Contribution to journalJournal article

  106. Published

    Cryptocoryne of the Nam Lik watershed in northwestern Laos

    Andersen, T., Pedersen, O., Christensen, C. & Jacobsen, Niels, 2006, In: Aquatic Gardener. 19, 1, p. 24-32 9 p.

    Research output: Contribution to journalJournal article

  107. Published

    Tha Pom Klong Song Nam - a wonderful locality for Cryptocoryne ciliata in south Thailand

    Jacobsen, Niels, 2006, In: Aquatic Gardener. 19, p. 30-38 9 p.

    Research output: Contribution to journalJournal article

  108. 2005
  109. Published

    A new species of Cryptocoryne (Araceae) from Borneo

    Ipor, I. B., Tawan, C. S. & Jacobsen, Niels, 2005, In: Gardens' Bulletin, Singapore. 57, p. 1-6 6 p.

    Research output: Contribution to journalJournal articlepeer-review

  110. Published

    Tha Pom Klong Song Nam: aussergewöhlicher Fundort von Cryptocoryne ciliata (Roxb.) Schott in Südthailand

    Jacobsen, Niels, 2005, In: Aqua Planta. 2, p. 58-64 7 p.

    Research output: Contribution to journalJournal article

  111. 2004
  112. Published

    Crocus cartwrightianus on the Attica Peninsula

    Jacobsen, Niels & Ørgaard, Marian, 2004, In: Acta Horticulturae. p. 65-69 5 p.

    Research output: Contribution to journalConference articlepeer-review

  113. Published

    Iagttagelser af Crocus cartwrightianus - en nær slægtning til safrankrokus

    Ørgaard, Marian & Jacobsen, Niels, 2004, In: Den Alpine Have. 82, p. 10-14 4 p.

    Research output: Contribution to journalJournal article

  114. Published

    Pogostémon helféri (Hook.f.) Press (Lamiaceae), eine neue Aquarienpflanze aus Thailand

    Prasartkul, A. & Jacobsen, Niels, 2004, In: Aqua Planta. 24, 4, p. 143-148 6 p.

    Research output: Contribution to journalJournal article

  115. Published

    The genomic organization and evolutionary distribution of a tandemly repeated DNA sequence family in the genus Crocus (Iridaceae)

    Frello, S., Ørgaard, Marian, Jacobsen, Niels & Heslop-Harrison, J. S., 2004, In: Yichuan. 141, 1, p. 81-88 8 p.

    Research output: Contribution to journalJournal articlepeer-review

  116. 2003
  117. Published

    Udvidet systematisk botanik bind 1: MAGNOLIFLORAE@2013VIOLIFLORAE

    Jensen, J. & Jacobsen, Niels, 2003, 128 p.

    Research output: Book/ReportBook

  118. Published
  119. Published
  120. Published
  121. Published

    Udvidet systematisk botanik bind 5: MONOCOTYLEDONEAE, Enkimbladede @2013 KVL

    Jensen, J. & Jacobsen, Niels, 2003, 148 p.

    Research output: Book/ReportBook

  122. 2002
  123. Published

    Cryptocorýne xpurpúrea Ridley nothovar. borneoensis N. Jacobsen, Bastmeijer & Y. Sasaki (Araceae), eine neue Hybridvarietät aus Kalimantan

    Jacobsen, Niels, Bastmeijer, J. D. & Sasaki, Y., 2002, In: Aqua Planta. 27, 4, p. 152-154 3 p.

    Research output: Contribution to journalJournal articlepeer-review

  124. Published

    Der ¤Cryptocorýne cordáta Griffith: Komplex (Araceae) in Malesien

    Jacobsen, Niels, 2002, In: Aqua Planta. 27, 4, p. 150-151 2 p.

    Research output: Contribution to journalJournal articlepeer-review

  125. Published

    Farvestoffer i krokus: blomsterfarvernes kemi hjælper med at belyse slægtskabet

    Nørbæk, R., Ørgaard, Marian & Jacobsen, Niels, 2002, In: Naturens Verden. 85, 6, p. 34-37 4 p.

    Research output: Contribution to journalJournal article

  126. Published

    Flower pigment composition of Crocus species and cultivars used for a chemotaxonomic investigation

    Nørbæk, R., Brandt, K., Kvist Nielsen, J., Ørgaard, Marian & Jacobsen, Niels, 2002, In: Biochemical Systematics and Ecology. 30, 8, p. 763-791 29 p.

    Research output: Contribution to journalJournal articlepeer-review

  127. 2000
  128. Published

    Liljer som have- og potteplanter

    Kristiansen, K. M., Ørgaard, Marian & Jacobsen, Niels, 2000, In: Groen Viden, Havebrug. 128, p. 1-8 8 p.

    Research output: Contribution to journalJournal article

  129. 1999
  130. Published

    Systematisk botanik: almen havebrugsbotanik, stængelplanter

    Jacobsen, Niels & Jensen, J., 1999, 3. ed. København: Jordbrugsforlaget. 298 p.

    Research output: Book/ReportBook

  131. 1998
  132. Published

    Whipple's operation for carcinoma of the pancreatic head and the ampullary region. Short-and long-term results

    Sørensen, M. B., Banner, Jytte, Rokkjaer, M. & Jacobsen, Niels, Jul 1998, In: Scandinavian Journal of Gastroenterology. 33, 7, p. 759-64 6 p.

    Research output: Contribution to journalJournal articlepeer-review

  133. Published

    SEM study of surface structures of the spathe in Cryptocoryne and Lagenandra (Araceae: Aroideae: Cryptocoryneae)

    Ørgaard, Marian & Jacobsen, Niels, 1998, In: Botanical Journal of the Linnean Society. 126, p. 261-289 29 p.

    Research output: Contribution to journalJournal articlepeer-review

  134. Published

    Weitere Aufsammlungen von Cryptocoryne usteriána Engler auf den Philippinen

    Jacobsen, Niels, Bogner, J. & Christensen, C., 1998, In: Aqua Planta. 23, 3, p. 113-115 3 p.

    Research output: Contribution to journalJournal articlepeer-review

  135. 1996
  136. Published

    Liljer i potter

    Ørgaard, Marian & Jacobsen, Niels, 1996, In: Gartner Tidende. 112, 8, p. 14-15 2 p.

    Research output: Contribution to journalJournal article

  137. Published

    Taxonomy in Hordeum murinum complex (Poaceae)

    Jacobsen, Niels & Bothmer, R. V., 1996, In: Nordic Journal of Botany. 15, 5, p. 449-458 10 p.

    Research output: Contribution to journalJournal articlepeer-review

  138. Published

    Unifying plant molecular data and plants

    Jacobsen, Niels & Ørgaard, Marian, 1996, Unifying plant genomes. Heslop-Harrison, J. S. (ed.). Cambridge: Society for Experimental Biology, p. 61-64 4 p. (Symposia of The Society for Experimental Biology).

    Research output: Chapter in Book/Report/Conference proceedingBook chapterResearch

  139. 1995
  140. Published

    Karyotype differentiation and evolution in the genus Hordeum (Poaceae)

    Linde-Laursen, I., Bothmer, R. V. & Jacobsen, Niels, 1995, Ikke angivet. Brandham, P. E. A. B. M. D. (ed.). Royal Botanic Gardens, p. 233-247 15 p.

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

  141. Published

    Molecular cytogenetics in the genus Crocus L.

    Ørgaard, Marian, Jacobsen, Niels & Heslop-Harrison, S., 1995, Ikke angivet. Brandham, P. E. A. B. M. D. (ed.). Royal Botanic Gardens, p. 291-300 10 p.

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearch

  142. 1994
  143. Published

    Graft-derived anti-HPA-2b production after allogeneic bone-marrow transplantation

    Taaning, E., Jacobsen, Niels & Morling, Niels, 1994, In: British Journal of Haematology. 86, 3, p. 651-3 2 p.

    Research output: Contribution to journalJournal articlepeer-review

  144. 1978
  145. Published

    Flora i kridt

    Rasmussen, Hanne Nina, Jacobsen, Niels & Rasmussen, Finn N., 1978, Beretning og regnskab for selskabets 88. regnskabsår 1977, Ålborg Portland. Ålborg, p. 19-24 6 p.

    Research output: Chapter in Book/Report/Conference proceedingReport chapterCommissioned

  146. 1976
  147. Published

    Vegetationen i kridtbruddet "Dania" ved Mariager Fjord

    Jacobsen, Niels, Larsen, H. & Rasmussen, Finn N., 1976, In: Botanisk Tidsskrift. 70, p. 184-187 4 p.

    Research output: Contribution to journalJournal articlepeer-review

  148. Published

    Über die Bestäubung von Ophrys speculum Link auf Mallorca

    Jacobsen, Niels & Rasmussen, Finn N., 1976, In: Orchidee. 27, p. 64-66 3 p.

    Research output: Contribution to journalJournal articlepeer-review

ID: 32042022