A vascular bundle is a part of the transport system in
vascular plants. The transport itself happens in the
stem
Stem or STEM may refer to:
Plant structures
* Plant stem, a plant's aboveground axis, made of vascular tissue, off which leaves and flowers hang
* Stipe (botany), a stalk to support some other structure
* Stipe (mycology), the stem of a mushro ...
, which exists in two forms:
xylem and
phloem. Both these tissues are present in a vascular bundle, which in addition will include supporting and protective tissues. In addition, there is also a tissue between xylem and phloem which is the
cambium.
The xylem typically lies towards the axis (
adaxial) with phloem positioned away from the axis (