;
作用;
的，纤It is found that the fiber of phloem of broussonetia is irregular elliptoid at cross section.
同时发现构
纤
的横截面是带有中腔不规则的椭圆形结构，且呈束纤分布。
，韧It is found that the fiber of phloem of broussonetia is irregular elliptoid at cross section.
同时发现构纤的横截面是带有中腔不规则的椭圆形结构，且呈束纤分布。
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：原生中柱的一种类型。木质是星形的，韧
于星形之间。
Plenty of laticiferous tubes were included in roots, stems and leaves.Intraxylary phloem formed around the pith.
髓的外围形成一环内生韧，这些结构特征使罗布麻能更好的适应干旱、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.
原生中柱的一种类型。木质是星形的，韧于星形之间。
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