Rolf Martin Theodor Dahlgren (7 July 1932 – 14 February 1987) was a Swedish-Danish botanist and professor at the University of Copenhagen from 1973 to his death.
[3] 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.
Although the system was first presented in Danish,[4] it rapidly gained widespread acceptance, particularly due to the instructive diagrams, so-called Dahlgrenograms.
His work on family circumscription in the Monocotyledons, published with Harold Trevor Clifford and Peter Frederick Yeo, has had profound influence well into the molecular age.
[5][6] A Rolf Dahlgren Memorial Symposium was held in Berlin, Germany later in 1987.