The Complete Herbal / To which is now added, upwards of one hundred additional herbs, with a display of their medicinal and occult qualities physically applied to the cure of all disorders incident to mankind: to which are now first annexed, the English physician enlarged, and key to Physic.

by Nicholas Culpeper

PEARL TREFOIL.

It differs not from the common sort, save only in this particular, it hath a white spot in the leaf like a pearl. It is particularly under the dominion of the Moon, and its icon shews that it is of a singular virtue against the pearl, or pin and web in the eyes.