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  1. Published

    Iris celikiii, a new species fron north-eastern Turkey

    Christensen, K. I. & Akpulat, H. A., 2006, In: Nordic Journal of Botany. 24, p. 207-210

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

  2. Published

    Sakhalin-pil (Salix udensis) - endnu en smalbladet pileart i Danmark (Japanese fantail willow (Salix udensis) - another narrow-leaved willow in Denmark)

    Christensen, K. I. & Nielsen, H., 2004, In: Dansk Dendrologisk Aarsskrift. 22, p. 9-15

    Research output: Contribution to journal › Journal article › Research

  3. Published

    Taxonomic notes on European taxa of Crataegus (Rosaceae)

    Christensen, K. I. & Janjic, N., 2006, In: Nordic Journal of Botany. 24, p. 143-147

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

  4. Published

    A morphometric study of hybridization between Pinus mugo and P. sylvestris (Pinaceae)

    Christensen, K. I. & Dar, G. H., 2003, In: Acta Horticulturae. 615, p. 211-221

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

  5. Published

    Vorte-fyr (Pinus attenuata) - et planteportræt (Knobcone pine (Pinus attenuata) - a plant portrait)

    Christensen, K. I., 2004, In: Dansk Dendrologisk Aarsskrift. 22, p. 5-8

    Research output: Contribution to journal › Journal article › Research

  6. Published

    160 botaniske stikord

    Christensen, K. I., 2006, Gyldendals DVD leksikon. København: Gyldendal, 160 p.

    Research output: Chapter in Book/Report/Conference proceeding › Encyclopedia chapter › Research

  7. Published

    Altai-Rødgran (Picea abies subsp. obovata i Nordskandinavien)

    Christensen, K. I., 2002, In: Dansk Dendrologisk Aarsskrift. 20, p. 5-11

    Research output: Contribution to journal › Journal article › Research

  8. Published

    Notes on the genus Crataegus (Rosaceae - Pyreae) in southern Europe, the Crimea and western Asia

    Christensen, K. I. & Zielinski, J., 2008, In: Nordic Journal of Botany. 26, p. 344-366

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

  9. Published

    A morphometric study of the geographic variation in Pinus contorta (Pinaceae)

    Christensen, K. I., 2005, In: Nordic Journal of Botany. 23, p. 563-575

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

  10. Published

    Pilefamilien, Salicaceae

    Christensen, K. I., 2006, Dansk flora. Frederiksen, S., Rasmussen, F. N. & Seberg, O. (eds.). København: Gyldendal, p. 372-384

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  11. Published

    Notes on the geographic distribution and ecology of Salix xanthicola (Salicaceae)

    Christensen, K. I., Zielinski, J. & Petrova, A., 2006, In: Phytologia Balcanica. 12, p. 209-213

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

  12. Published

    Proposal to conserve the name Salix fragilis with a conserved type (Salicaceae)

    Christensen, K. I. & Jonsell, B., 2005, In: Taxon. 54, 2, p. 555-556

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

  13. Published

    Salix xanthicola (Salicaceae) - distribution, ecology and relationships

    Christensen, K. I., 2006, In: Annales Musei Goulandris. 11, p. 37-79

    Research output: Contribution to journal › Journal article › Research

  14. Published

    Typification of specific and infraspecific names in Abies, Larix, Picea and Pinus (Pinaceae)

    Christensen, K. I. & Orlova, L. V., 2006, In: Feddes Repertorium. 117, p. 519-525

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

  15. Published

    Klit-fyr /Pinus contorta i Danmark - variation og tilpasning

    Christensen, K. I., 2003, In: Dansk Dendrologisk Aarsskrift. 21, p. 5-49

    Research output: Contribution to journal › Journal article › Research

  16. Published

    Hvidtjørn, Crataegus L.

    Christensen, K. I., 2006, Dansk flora. Frederiksen, S., Rasmussen, F. N. & Seberg, O. (eds.). København: Gyldendal, p. 416-417

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  17. Published

    A supplement to" K.I. Christensen & G.H. Dar 1996: A morphometric analysis of spontaneous and artificial hybrids of Pinus mugo x sylvestris (Pinaceae)"

    Christensen, K., 1998, København. 2 p.

    Research output: Book/Report › Book › Research

  18. Published

    Salix L. (pro parte)

    Christensen, K., 2000, Flora Nordica 1. Stockholm: Royal Swedish Academy of Sciences, p. 122-136,153-158,179-182

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

  19. Published

    Materials for Flora Nordica: Typification of some Maloideae (Rosaceae) commonly cultivated in Norden

    Christensen, K., 1998, In: Nordic Journal of Botany. 18, p. 701-703

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

  20. Published

    Habitat diversity and zonality of vegetation in Sind Valley, Kashmir Himalaya

    Christensen, K. & Hassan Dar, G., 1999, In: Nature and Biosphere. 4, p. 49-71

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

  21. Published

    Lange, Johan 1999. Kulturplanternes indførselshistorie i Danmark indtil midten af 1900-tallet. 2. udgave. DSR Forlag. Frederiksberg

    Christensen, K., 1999, In: Dansk Dendrologisk Aarsskrift. 17, p. 131

    Research output: Contribution to journal › Review › Research

  22. Published

    Update of "K.I. Christensen 1998: A reanalysis of Crataegus eremitagensis C. raavadensis and schumacheri (Rosaceae)

    Christensen, K., 1998, København. 2 p.

    Research output: Book/Report › Book › Research

  23. Published

    Bestemmelsesnøgle til Taks (Taxus) i Danmark

    Christensen, K., 1998, In: Meddelelser fra Atlas Flora Danica. 4, p. 1-2

    Research output: Contribution to journal › Journal article › Research

  24. Published

    Dansk Dendrologisk Årsskrift i 50 år: Artikler publiceret i bínd 1,1 (1950) til 17 (1999)

    Christensen, K., 2000, In: Dansk Dendrologisk Aarsskrift. 18, p. 50-73

    Research output: Contribution to journal › Journal article › Research

  25. Published

    Crataegus L. (Rosaceae)

    Christensen, K., 1998, Standardliste der Farn- und Blütenpflanzen Deutschlands. Stuttgart (Hohenheim): Ulmer, p. 158-161

    Research output: Chapter in Book/Report/Conference proceeding › Book chapter › Research

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