Frankincense

It diveth away the dimness of the eye-sight, filleth up hollow ulcers, it closeth raw wounds, stayeth all corruptions of blood, although it fall from the head....

... it is much used in spitting of blood, swellings, in the mouth, the colic passion, the flux in the belly rising from the stomach....

Discorides saith, That if it be drunk by a man in health, it driveth him into a frenzy: but there are few Greeks of his mind.

Avicenna reporteth that it doth help and strengthen the wit and understanding, but the often taking of it will breed the head-ache, and if too much of it be drunk with wine it killeth.

Gerard, p. 1436.

Köhler, 175. Courtesy of the Missouri Botanical Garden.