One of the modern systems of plant taxonomy, the Dahlgren system was published by monocot specialist Rolf Dahlgren in 1977, set out in more detail in 1982 for monocotyledons and revised in 1985. His wife Gertrud Dahlgren continued the work after his death. In the 1989 revision, the alternate names Magnoliidae and Liliidae were dropped in favour of Dicotyledon and Monocotyledon, and the suffix -florae was replaced with -anae (e.g. Alismatanae for Alismatiflorae) . Reveal provides an extensive listing of Dahlgren's classification. (Note the synonyms, both nomenclatural and taxonomic, for each name in the system.)