Thesaurus literaturae botanicae omnium gentium inde a rerum botanicarum initiis ad nostra usque tempora. Quindecim millia operum recensens. Editionem novam reformatam.

First published in 1851, this documents literature from ancient times to publication date. Research involved examination of 40,000 works in libraries at Vienna, Geneva, London, Paris and various German locations. Digital facsimile of the 1872 edition from the Hathi Trust at this link.