Note 4:2 — INTRODUCTION.
Reading edition
It seems probable that the Lily of the Valley was not recognized as a British plant in Shakespeare's time, and was very little grown even in gardens. Turner says, "Ephemerū is called in duch meyblumle, in french Muguet. It groweth plentuously in Germany, but not in England that ever I coulde see, savinge in my Lordes gardine at Syon. The Poticaries in Germany do name it Lilium Cōvallium, it may be called in englishe May Lilies."—Names of Herbes, 1548. Coghan in 1596 says much the same: "I say nothing of them because they are not usuall in gardens."—Haven of Health.