| Nils Gustaf Lagerheim | |
| Birth Date: | 18 October 1860 |
| Birth Place: | Stockholm, Sweden |
| Death Place: | Stockholm, Sweden |
| Nationality: | Swedish |
| Occupation: | Botanist |
| Alma Mater: | Upsala university |
| Spouse: | Céline Julie Berthe Devéria |
Nils Gustaf Lagerheim (1860–1926) was a Swedish botanist, mycologist, phycologist, and pteridologist.[1] With Veit Brecher Wittrock and Otto Nordstedt he edited the exsiccata series Algae aquae dulcis exsiccatae praecipue Scandinavicae quas adjectis algis marinis Chlorophyllaceis et Phycochromaceis distribuerunt Veit Wittrock, Otto Nordstedt, G. Lagerheim (1896 - 1903).[2] [3]
Today, he is best remembered as one of the chief architects of pollen analysis as a tool in botany, alongside his student Ernst Post.[4] [5]
In 1895, botanists Giovanni Battista De Toni and Robert Hippolyte Chodat published Lagerheimia, which is a genus of green algae in the family Oocystaceae, named in his honour.[6] Then in 1940, Boedijn published Lagerheimiella, another green algae genus.[7]