xylem

4) Primary xylem is of centrarch maturation;

4)初生木质部发生顺为心始式;

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

叶脉、叶柄、上胚轴的维管束均为外韧。

The results showed that the primary xylem of the root is diarch, triarch and tetrarchy;

结果表明：根的初生木质部为二原、三原原；

Protoxylem The PRIMARY XYLEM elements that are formed from the procambium first.

原生木质部：初生木质部的成分，最早由原形成层形成。

Actinostele A rype of protostele in which the xylem is star shaped and the phloem lies between the points of the star.

星状中柱：原生中柱的一种类。木质部是星形的，韧皮部位于星形之间。