Intrafascicular cambium (fascicular cambium) The part of the VASCULAR CAMBIUM within the vascular between the xylem and 束中形成层：是位于木质部和韧皮部构成的维管束内的一部分维管形成层。
The vascular cambium extends to form a complete ring of meristematic tissue around the stem, the separate vascular bundl维管形成层向两侧延伸直至形成一个茎内的分生组织环，各个维管束被束间形成层联系在一起。