Ernst Johann Lemmermann (27 May 1867 in Bremen – 11 May 1915 in Bremen) was a German botanist who specialized in the field of phycology.
During his career he taught classes (Seminarlehrer) in Bremen, where he also worked as a botanical assistant at the Städtisches Museum für Natur-, Völker- und Handelskunde.[1] In Bremen he was an instructor to biologist Friedrich Hustedt (1886-1968),[2] who named the diatom species of Achnanthes lemmermannii in honor of his former teacher in 1933.[3]
He was also honoured in 1942, in Lemmermanniella, which is a genus of cyanobacteria belonging to the family Synechococcaceae,[4] and Lemmermannia which is a genus of fresh water trebouxiophyceans, named in 1904.[5] Also, the blue-green algae species, Anabaena lemmermannii was named after Lemmermann,[6] now a synonym of Dolichospermum lemmermannii (P.G.Richt.) Wacklin, L.Hoffm. & Komárek.[7]