Olaf Hagerup - Scientific Works

Scientific Works

  • Hagerup, O. (1915) The structure and biology of arctic flowering plants. 10. Caprifoliaceae. Linnaea borealis L. Meddelelser om Grønland 37: 151-164.
  • Hagerup, O. (1922) Om Empetrum nigrum L. En naturhistorisk Studie (On Empetrum nigrum L. A study of natural history). Botanisk Tidsskrift 37 (4): 253-304.
  • Hagerup, O. (1922) Om "Lobelia-Diagram" hos Erica cinerea L. (On ”Lobelia diagram” by Erica cinerea L.) Botanisk Tidsskrift 38: 137-140.
  • Hagerup, O. (1926) Kønsdelenes Bygning og Udvikling hos Koenigia islandica L. (The anatomy and development of sexual structures in Koenigia islandica L.) Meddelelser om Grønland 58 (3): 197-204.
  • Hagerup, O. (1927) Empetrum hermaphroditum (Lge) Hagerup, a new tetraploid, bisexual species. Dansk Botanisk Arkiv 5 (2): 1–17.
  • Hagerup, O. (1928) Morphological and cytological studies of Bicornes. Dansk Botanisk Arkiv 6 (1): 1-27.
  • Hagerup, O. (1928) En hygrofil bælgplante (Aeschynomene aspera L.) med Bakterieknolde paa Stængelen (En hygrophilic legume (Aeschynomene aspera L.) with bacterial nodules on the stem). Dansk Botanisk Arkiv 5 (14): 1-9.
  • Hagerup, O. (1929) Étude des types biologiques de Raunkiær dans la flore autour de Tombouctou. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 9 (4): 1-116.
  • Hagerup, O. (1930) Über die Bedeutung der Schirmform der Krone von Acacia seyal Del. Dansk Botanisk Arkiv 6 (4): 1-20.
  • Hagerup, O. (1930) Vergleichende Morphologische und Systematische Studien über die Ranken und Andre Vegetative Organe der Cucurbitaceen und Pasifloraceen. Doctoral dissertation, University of Copenhagen. Dansk Botanisk Arkiv 6 (8): 1-104.
  • Hagerup, O. (1932) Über Polyploidie in Beziehung zu klima, Ökologie und Phylogenie. Hereditas 16: 19-40.
  • Hagerup, O. (1932) On Pollination in the extremely hot air at Timbuctu. Dansk Botanisk Arkiv 8 (1): 1-20.
  • Hagerup, O. (1933) Studies on polyploid ecotypes in Vaccinium uliginosum L. Hereditas 18 (1-2): 122-128.
  • Hagerup, O. (1933) Zur Organogenie und Phylogenie der Koniferenzapfen. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 10 (7).
  • Hagerup, O. (1934) Zur Abstammung einiger Angiospermen durch Gnetales und Coniferæ, I. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 11 (4): 1-83.
  • Hagerup, O. (1935) Zur Periodizität im Laubwechsel der Moose. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 11 (9): 1-88.
  • Hagerup, O. (1936) Zur Abstammung einiger Angiospermen durch Gnetales und Coniferæ, II. Centrospermae. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 13 (6): 1-60.
  • Hagerup, O. (1938) On the origin of some Angiosperms through the Gnetales and the Coniferae. III. The gynaecium of Salix cinerea. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 14 (4): 1-34.
  • Hagerup, O. (1938) A peculiar asymmetrical mitosis in the microspore of Orchis. Hereditas 24: 94-96.
  • Hagerup, O. (1938) Studies on the significance of polyploidy. II. Orchis. Hereditas 24: 258-264.
  • Hagerup, O. (1939) On the origin of some Angiosperms through the Gnetales and the Coniferae. IV. The gynaecium of Personatae. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 15 (2): 1-39.
  • Hagerup, O. (1939) Studies on the significance of polyploidy. III. Deschampsia and Aira. Hereditas 25: 185-192.
  • Hagerup, O. (1940) Studies on the significance of polyploidy. IV. Oxycoccus. Hereditas 26: 399-410.
  • Hagerup, O. (1941) Zytoökologische Bicornes-Studien. Planta 32: 6-14.
  • Hagerup, O. (1941) Bestøvningen hos Liparis og Malaxis. (Pollination in Liparis and Malaxis). Botanisk Tidsskrift 45: 396-402.
  • Hagerup, O. (1942) The morphology and biology of the Corylus-fruit. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 17 (6): 1-42.
  • Hagerup, O. (1942) Myre-Bestøvning. (Ant pollination). Botanisk Tidsskrift 46: 116-123.
  • Hagerup, O. (1944) Notes on some boreal polyploids. Hereditas 30: 152-160.
  • Hagerup, O. (1944) On fertilization, polyploidy and haploidy in Orchis maculatus L. sens. lat. Dansk Botanisk Arkiv 11 (5): 1-26.
  • Hagerup, O. (1944) Basidiens cytologi hos Tremellodon gelatinosum (Scop.) Pers. (Cytology of the basidia by Tremellodon gelatinosum (Scop.) Pers). Friesia 3: 46-51.
  • Hagerup, O. (1945) Facultative parthenogenesis and haploidy in Epipactis latifolia. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 19 (11): 1-14.
  • Hagerup, O. (1945) Basidiens cytologi hos Lepiota (Limacella) lenticularis Lasch (Cytology of the basidia by Lepiota (Limacella) lenticularis Lasch). Friesia 3: 96-100.
  • Hagerup, O. (1946) Studies on the Empetraceae. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 20 (5): 1-49.
  • Hagerup, O. (1947) The spontaneous formation of haploid, polyploid, and aneuploid embryos in some orchids. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 20 (9): 1-22.
  • Hagerup, O. (1950) Thrips pollination in Calluna. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 18 (4): 1-16.
  • Hagerup, O. (1950) Rain-pollination. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 18 (5): 1-18.
  • Hagerup, O. (1951) Pollination in the Faroes - in spite of rain and poverty in insects. Biologiske Meddelelser, Kongelige Danske Videnskabernes Selskab 18 (15): 1-48.
  • Hagerup, O. (1952) Bud autogamy in some northern orchids. Phytomorphology 2: 51-61.
  • Hagerup, O. (1952) The morphology and biology of some primitive orchid flowers. Phytomorphology 2: 134-138.
  • Hagerup, O. (1953) Autogami hos Chamaeorchis. Blyttia 11: 1-5.
  • Hagerup, Else & Olaf (1953) Thrips pollination of Erica tetralix. New Phytologist 52 (1): 1-7
  • Hagerup, O. (1953) The morphology and systematics of the leaves in Ericales. Phytomorphology 3: 459-464.
  • Hagerup, O. (1953) Thrips-pollination in Hypochoeris radicata. Nytt Magasin for Botanik 3: 55-58.
  • Hagerup, O. (1954) Autogamy in some drooping Bicornes flowers. Botanisk Tidsskrift 51: 103-116.
  • Hagerup, O. (1957) Wind autogamy in Arbutus. Bulletin du Jardin botanique de l'État a Bruxelles 27 (1): 41-47.
  • Hagerup, Olaf & Petersson, Vagn (1956–1960) Botanical Atlas. Copenhagen: Munksgaard.
    • Vol. I: Angiosperms, 550 p.
    • Vol. II: Mosses, Ferns, Horsetails, Clubmosses, Conifers, Evolution. 299 p.

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