The manuscript is an account of how Cain and Abel slew each other and how Adam's inheritance therefore passed to his third son, Seth.
This wand was placed in the Ark of the Covenant and was planted by King David on Mount Zion, where it grew into a triple tree which was cut down by Solomon to construct the pillars of Jachin and Boaz at the entrance to the Temple in Jerusalem.
It was, however, removed by some wicked priests, weighted down by stones and thrown into the Temple reservoir, where it was hidden and guarded by an angel.
During Christ's lifetime the reservoir was drained and the piece of wood found and used as a bridge across the brook of Kedron, over which Jesus passed after his arrest on the Mount of Olives.
It is also found in the 12th century Quete del St. Graal(Quest of the holy grail), attributed to Walter Map, who probably actually only edited it.