Macer Floridus

De Viribus Herbarum (On the properties of plants), also known by the author's pseudonym, Macer Floridus, is a Latin hexameter poem on the properties of herbs.

[1] It was still in scholarly use as late as the 16th century, but was superseded by more comprehensive herbals.

[1] The herbal was translated first into Hebrew, then also German, Catalan, Danish, Dutch, English, French, Italian, and Spanish.

[1] A Middle English version of the poem was translated by John Lelamour, a schoolmaster from Hereford, in the fourteenth century.

[2][3] The original poem lists 77 plants and their properties; it is accompanied by 20 additional items known as "Spuria", which were added later.