E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Maidenhair
(a fern, so-called from its hair-like stalks) never takes wet or moisture.
1
His skin is like the herb called true Maidens hair, which never takes wet or moisture, but still keeps dry, though laid at the bottom of a river as long as you please. For this reason it is called Adiantos.Rabelais: Pantagruel, iv. 24.