The Lingua ignota and its place within a history of language invention -- Introduction: Hildegard's language as vineyard and edifice -- An unknown language by a visionary woman -- Glossolalia and glossographia -- Medieval language philosophy -- Fifteenth- to nineteenth-century language inventions -- Play and aesthetic in contemporary language invention -- Greening language : Hildegard's monastery garden -- Manuscripts, edition, and translation of the Lingua ignota -- Manuscript information -- Notes to Manuscript information -- The Riesencodex Lingua ignota with additions from the Berlin MS -- Notes to the translation -- Hildegard's Lingua alphabetized.