维管束的

Interfascicular cambium A single layer of actively dividing cells between the vascular bundles in stems.

间形成层是位于茎的管间的具有裂能力的一层细胞。

The micrib belonging to bicollateral bundle is well developed.The bundle sheath is composed of idioblasts.

主脉发达，有异细胞组成的管鞘，具双生韧皮部。

The development of xylem is of mesarch.Stomata are monocyclic type.

叶脉、叶柄、上胚轴的管外韧型。