Johanna Emilie Katharina Elizabeth "Käthe" Hoffmann (born 1 August 1883 in Breslau) was a German botanist who described many plant species in New Guinea and South East Asia including Annesijoa novoguineensis.
[1] As of May 2020[update], Plants of the World Online lists 439 accepted genera and species which include Käthe Hoffmann in the authority, in some capacity.
[2] While some sources give her year of death as 1931,[3] this is impossible as she was the author of two papers published in Revista Sudamericana de Botánica in 1942, one of them being an obituary of Ferdinand Albin Pax.
Her name appears alongside those of Ferdinand Pax and Käthe Hoffmann in issue 68 of Adolf Engler's multivolume work Das Pflanzenreich.
[11] Between 1911 and 1924, Ferdinand Pax and Käthe Hoffmann contributed almost all the sections on the family Euphorbiaceae to Engler's monumental work, Das Pflanzenreich (The Plant Kingdom).