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- Olaf_Hagerup abstract "Olaf Hagerup (September 29, 1889 – March 2, 1961) was a Danish botanist. He studied botany at the University of Copenhagen from 1911 under the professors Eugenius Warming, Christen C. Raunkiær, L. Kolderup Rosenvinge og W. Johannsen. He took his Ph.D. from the same university in 1930. From 1934 to 1960, he was superintendent at the Botanical Museum of the University of Copenhagen.Hagerup’s scientic works concern evolution, polyploidy and pollination, among other things. He showed that the tetraploid Empetrum hermaphroditum is a separate species from the diploid Empetrum nigrum. He thereby initiated the use of chromosome numbers in systematic botany, a field later known as cytotaxonomy. He put forward the hypothesis that the ploidy level is an important factor in the distribution and ecology of plant species. In contrast, another of his scientific ideas has been disproven by later modern research – the idea of a direct ancestry of the centrosperms (approximately equal to Caryophyllales) from the gymnospermous Gnetophyta and, hence, two separate evolutionary lineages within the flowering plants. Many of Hagerup’s study were concerned with plant species of the Ericaceae, Empetraceae and related families, or ’’Bicornes’’ as they were know in the Wettstein system.The cranberry Oxycoccus hagerupii (Ericaceae) was named to his honour by Á. & D. Löve (later transferred to Vaccinium by Hannu Ahokas as Vaccinium hagerupii.".
- Olaf_Hagerup birthDate "1889-09-29".
- Olaf_Hagerup birthYear "1889".
- Olaf_Hagerup deathDate "1961-03-02".
- Olaf_Hagerup deathYear "1961".
- Olaf_Hagerup viafId "38382924".
- Olaf_Hagerup wikiPageExternalLink j.1469-8137.1953.tb05199.x.
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- Olaf_Hagerup dateOfBirth "1889-09-29".
- Olaf_Hagerup dateOfDeath "1961-03-02".
- Olaf_Hagerup hasPhotoCollection Olaf_Hagerup.
- Olaf_Hagerup name "Hagerup, Olaf".
- Olaf_Hagerup placeOfBirth "Balling".
- Olaf_Hagerup placeOfDeath "Gentofte".
- Olaf_Hagerup shortDescription "Danish botanist".
- Olaf_Hagerup description "Danish botanist".
- Olaf_Hagerup description "Danish botanist".
- Olaf_Hagerup subject Category:1889_births.
- Olaf_Hagerup subject Category:1961_deaths.
- Olaf_Hagerup subject Category:Botanists_active_in_Africa.
- Olaf_Hagerup subject Category:Danish_botanists.
- Olaf_Hagerup subject Category:Danish_scientists.
- Olaf_Hagerup subject Category:University_of_Copenhagen_alumni.
- Olaf_Hagerup subject Category:University_of_Copenhagen_faculty.
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- Olaf_Hagerup comment "Olaf Hagerup (September 29, 1889 – March 2, 1961) was a Danish botanist. He studied botany at the University of Copenhagen from 1911 under the professors Eugenius Warming, Christen C. Raunkiær, L. Kolderup Rosenvinge og W. Johannsen. He took his Ph.D. from the same university in 1930. From 1934 to 1960, he was superintendent at the Botanical Museum of the University of Copenhagen.Hagerup’s scientic works concern evolution, polyploidy and pollination, among other things.".
- Olaf_Hagerup label "Olaf Hagerup".
- Olaf_Hagerup label "Хагеруп, Олаф".
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- Olaf_Hagerup givenName "Olaf".
- Olaf_Hagerup isPrimaryTopicOf Olaf_Hagerup.
- Olaf_Hagerup name "Hagerup, Olaf".
- Olaf_Hagerup name "Olaf Hagerup".
- Olaf_Hagerup surname "Hagerup".