in the Materia Medica, a name given by the modern Greek writers to the root called behem by Avicenna and Serapion. Many have been at a loss to know what this root pechem was; but the virtues ascribed to it are the same with those of the behem of the Arabians; its description is the same, and the division of it into white and red is also the same as that of the behem. Nay, the word pechem is only formed of behem by changing the b into a p, which is very common, and the aspirate into χ, or ch, which is as common. Myrepus, who treats of this root, says the same thing that the Arabian Avicenna says of behem, namely, that it was the fragments of a woody root, much corrugated and wrinkled on the surface, which was owing to its being so moist whilst fresh, that it always shrunk greatly in the drying.