Indian mulberry, St. John’s wort, Hawaiian baby woodrose – whether disputed wonder drug, traditional medicinal plant or unknown exotic plant – the Lexicon of Medicinal Plants can always be relied upon. The lexical and classic knowledge about the individual medicinal plants – such as family, origin, use, effect and constituents – garnered over decades and peppered with particular anecdotes on the herbal drugs, can be regarded as unique and largely timeless. At the repeated request of readers, this reference work has therefore been reissued in book form, with its contents largely unchanged but with misprints corrected and its layout modernised. A wealth of experience that even in the fast-moving digital world preserves traditional knowledge.