The vascular cambium is the source of both the secondary xylem -LRB- inwards , towards the pith -RRB- and the secondary phloem -LRB- outwards -RRB- , and is located between these tissues in the stem and root .

It is the source of both the secondary xylem -LRB- inwards , towards the pith -RRB- and the secondary phloem -LRB- outwards -RRB- , and is between these tissues in the stem and root .
