14th century. Aemilii Macri Carmen de viribus medicinalibus herbarum cum nominibus earum Anglia explicatis.
Ashmole 1397 (E. XV). Oxford.
14th century. Macer de viribus herbarum.
Ff. VI. 53 (X). Cambridge University Library.
14th century. Macer de Herbarum viribus.
36 (I. i). Emmanuel College, Cambridge.
Early 14th century. Aemilius Macer. Carmen de viribus herbarum.
Arundel 225 (II). British Museum.
14th century. De viribus herbarum.
Harleian 3353 (I). British Museum.