phloem

It is found that the fiber of phloem of broussonetia is irregular elliptoid at cross section.

同时发现构纤横截面是带有中腔不规则椭圆形结构，且呈束纤分布。

Plenty of laticiferous tubes were included in roots, stems and leaves.Intraxylary phloem formed around the pith.

髓外围形成一环内生，这些结构特征使罗布麻能更好适应干旱、盐碱等恶劣环境。

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

原生中柱一种类型。木质是星形，位于星形之间。