COMFREY • FREE-TRANSLATOR.COM • Definition of Comfrey

... twenty years of age or more, before the third hour of the vigil of St. John the Baptist, pull up by the roots a specimen of consolida major (comfrey) and another of consolida minor (healall), repeating thrice the Lord's prayer (oratio dominica). Let him speak to no one while either going or returning, say nothing whatever, but in deep silence let him extract the juice from the herbs and with this juice write ...

— Gilbertus Anglicus - Medicine of the Thirteenth Century • Henry Ebenezer Handerson