Rolf Martin Theodor Dahlgren
| Rolf Dahlgren | |
|---|---|
| Born | 7 July 1932 Örebro |
| Died |
14 February 1987 (aged 54) Scania |
| Residence | Copenhagen |
| Nationality | Danish |
| Fields | Botany |
| Institutions | University of Copenhagen |
| Alma mater | George Washington University |
| Known for | Dahlgren system |
| Author abbrev. (botany) | R.Dahlgren |
| Spouse | Gertrud Dahlgren |
Rolf Martin Theodor Dahlgren (7 July 1932 – 14 February 1987) was a Swedish-Danish botanist, professor at the University of Copenhagen from 1973 to his death.
Dahlgren was born in Örebro on July 7, 1932 to apothecary Rudolf Dahlgren and wife Greta née Dahlstrand. He took his MSc degree in Biology in (1955) and PhD degree in Botany in (1963) at Lund University. He was killed in a car crash in Scania, Sweden on February 14, 1987).
He continued working on South African plants during expeditions in 1956-57 and 1965–66, while affiliated with the Botanical Museum in Lund as docent. In 1973, he became professor of botany at the University of Copenhagen. Here, he developed his system of Angiosperm classification, based on many more characters simultaneously than previous systems, most notably many plant traits (see also chemotaxonomy). Although the system was first presented in Danish, it rapidly gained widespread acceptance, particularly due to the instructive diagrams, socalled Dahlgrenograms. His work on family circumscription in the Monocotyledons, published with H. T. Clifford and Peter Yeo, has had profound influence well into the molecular age.
A Rolf Dahlgren Memorial Symposium was held in Berlin, Germany later in 1987. The couple had three children, Susanna, Helena and Fredrik.
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